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  • Special pages - SubversionWiki
    tokens User contributions User group rights User list Recent changes and logs Gallery of new files Logs New pages Recent changes Related changes Valid change tags Watchlist Media reports and uploads File list List of files with duplicates MIME search Media statistics Search for duplicate files Data and tools Book sources Expand templates Statistics System messages Version Redirecting special pages External links search Random page Random page in category Random

    Original URL path: https://www.orcaware.com/svn/wiki/Special:SpecialPages (2016-04-24)
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  • SubversionWiki
    another wiki related to Subversion At this time it contains more content than this wiki However unlike this wiki it doesn t use the more popular MediaWiki engine and apprently due to spam problems was forced to shut off public editing HowTos Manage System Configurations like etc files using subversion Setting up Subversion configured for Windows Active Directory HTTPS Setting up Automatic lock modify unlock for binary files How to do Server performance tuning for Linux and Unix Contrib tools svnmerge py Automatic branch management with merge tracking support Repository Upgrade Upgrade from an older repository to latest 1 4 Windows Subclipse The subversion plugin for Eclipse SVNKit Pure Java Subversion library SVN Notifier Notifies you about other people s commits to subversion MediaWiki help This wiki uses the MediaWiki software Consult the User s Guide for information on using the wiki software Getting started Configuration settings list MediaWiki FAQ MediaWiki release mailing list Fast paced overview of Subversion for experienced users Retrieved from https www orcaware com svn mediawiki index php title Main Page oldid 1791 Navigation menu Personal tools 81 198 240 36 Talk for this IP address Log in Namespaces Main page Discussion Variants Views Read View

    Original URL path: https://www.orcaware.com/svn/mediawiki/index.php?title=Main_Page&printable=yes (2016-04-24)
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  • Information for "Main Page" - SubversionWiki
    Edit Allow all users infinite Move Allow all users infinite Edit history Page creator MediaWiki default Talk Date of page creation 12 56 29 May 2006 Latest editor WikiSysop Talk contribs Date of latest edit 08 54 18 August 2011 Total number of edits 48 Total number of distinct authors 29 Recent number of edits within past 90 days 0 Recent number of distinct authors 0 Retrieved from https www

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  • Orca - Orca Host Status
    Info Daily Weekly Monthly Quarterly Yearly All Interface Output Bits Per Second Info Daily Weekly Monthly Quarterly Yearly All Interface Input Packets Per Second Info Daily Weekly Monthly Quarterly Yearly All Interface Output Packets Per Second Info Daily Weekly Monthly Quarterly Yearly All Interface Input Errors Per Second Info Daily Weekly Monthly Quarterly Yearly All Interface Output Errors Per Second Info Daily Weekly Monthly Quarterly Yearly All Interface Input Dropped Per Second Info Daily Weekly Monthly Quarterly Yearly All Interface Output Dropped Per Second Info Daily Weekly Monthly Quarterly Yearly All Interface Output Collisions Info Daily Weekly Monthly Quarterly Yearly All Interface Output Carrier Losses Info Daily Weekly Monthly Quarterly Yearly All TCP Current Connections Daily Weekly Monthly Quarterly Yearly All IP Statistics Daily Weekly Monthly Quarterly Yearly All TCP Statistics Daily Weekly Monthly Quarterly Yearly All ICMP Statistics Daily Weekly Monthly Quarterly Yearly All UDP Statistics Daily Weekly Monthly Quarterly Yearly All Disk System Wide Reads Writes Per Second Info Daily Weekly Monthly Quarterly Yearly All Disk System Wide Transfer Rate Info Daily Weekly Monthly Quarterly Yearly All Disk Reads Writes Per Second Info Daily Weekly Monthly Quarterly Yearly All Disk Transfer Rate Info Daily Weekly Monthly Quarterly Yearly

    Original URL path: https://www.orcaware.com/orca/stats/procallator/ (2016-04-24)
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  • OrcaWare Technologies - Orca Example Sites - Yahoo!/GeoCities Host Status
    All Web Server Data Transfer Rate Info Daily Weekly Monthly Quarterly Yearly All Web Server HTTP Error Rate Info Daily Weekly Monthly Quarterly Yearly All Interface Bits Per Second hme0 Info Daily Weekly Monthly Quarterly Yearly All Interface Bits Per Second hme1 Info Daily Weekly Monthly Quarterly Yearly All Interface Bits Per Second le0 Info Daily Weekly Monthly Quarterly Yearly All Interface Packets Per Second hme0 Info Daily Weekly Monthly Quarterly Yearly All Interface Packets Per Second hme1 Info Daily Weekly Monthly Quarterly Yearly All Interface Packets Per Second le0 Info Daily Weekly Monthly Quarterly Yearly All Interface Errors Per Second hme0 Info Daily Weekly Monthly Quarterly Yearly All Interface Errors Per Second hme1 Info Daily Weekly Monthly Quarterly Yearly All Interface Errors Per Second le0 Info Daily Weekly Monthly Quarterly Yearly All Interface Nocanput Rate Info Daily Weekly Monthly Quarterly Yearly All Interface Deferred Packet Rate Info Daily Weekly Monthly Quarterly Yearly All Interface Collisions Info Daily Weekly Monthly Quarterly Yearly All TCP Bits Per Second Info Daily Weekly Monthly Quarterly Yearly All TCP Segments Per Second Info Daily Weekly Monthly Quarterly Yearly All TCP Retransmission Duplicate Received Percentage Info Daily Weekly Monthly Quarterly Yearly All TCP New Connection Rate Info Daily Weekly Monthly Quarterly Yearly All TCP Number Open Connections Info Daily Weekly Monthly Quarterly Yearly All TCP Reset Rate Info Daily Weekly Monthly Quarterly Yearly All TCP Attempt Fail Rate Info Daily Weekly Monthly Quarterly Yearly All TCP Listen Drop Rate Info Daily Weekly Monthly Quarterly Yearly All Sleeps on Mutex Rate Info Daily Weekly Monthly Quarterly Yearly All NFS Server Call Rate Info Daily Weekly Monthly Quarterly Yearly All NFS Server Call Distribution Info Daily Weekly Monthly Quarterly Yearly All NFS Client Call Rate Info Daily Weekly Monthly Quarterly Yearly All NFS Timeouts Bad Transmits Rate

    Original URL path: https://www.orcaware.com/orca/orca-example/ (2016-04-24)
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  • Orca - Orcallator Graph Information
    maximum hits per second rate measured over the 5 seconds interval and also stores the average hit rate over the entire 5 minute interval The hit per second rate over 5 seconds will always be larger than the 5 minute average These two graphs are useful for seeing the peak and average traffic your web server receives Web Server File Size Over a single measurement interval orcallator se measures the total number of bytes served by reading the access log and counts the number of hits that requested objects in the following ranges Number of files less than 1 Kbytes Number of files between 1 and 10 Kbytes Number of files between 10 and 100 Kbytes Number of files between 100 Kbytes and 1 Mbyte Number of files larger than 1 Mbyte Web Server Data Transfer Rate When orcallator se reads the web server access log it calculates the average number of bits served per second This number does not include overhead in the TCP IP packet headers and retransmissions Web Server HTTP Error Rate This measures the number of requests that resulted in 4XX or 5XX return codes per second Interface Bits Per Second This set of graphs shows the number of input and output bits per second on the given interface It counts all bits from each protocol including headers Interface Packets Per Second This set of graphs shows the number of input and output packets per second on the given interface Interface Errors Per Second This set of graphs shows the number input and output Ethernet errors per second on the given interface Interface Deferred Packet Rate This is the number of times a transmission was deferred to a future time at the interface level This slows down the transmission time of a packet Interface Collisions If two systems try to transmit at the same time they collide back off for a randomly generated short delay then try again When a shared bus Ethernet gets busy contention increases and overall throughput drops off if there are many collisions Collisions are only detected when the system is trying to transmit Interface Nocanput Rate This counts the number of times a received packet was discarded due to slow processing in the TCP IP stack and lack of buffering on input When a TCP IP packet is discarded the other system has to time out and retransmit just as if the packet had been discarded by a congested router This graph therefore indicates network problems which are in part a result of insufficient CPU speed or too much traffic I have observed non zero values of this on heavily loaded web servers On a equally loaded server I have observed Solaris 2 5 1 to have 2 to 10 times as many nocanputs as Solaris 2 6 There will probably not be as large an improvement to Solaris 2 7 TCP Bits Per Second The number of bits per second transferred via TCP This will be generally be less than the sum of transmits for all interfaces which include other protocols and additional low level overheads such as the additional bytes for the IP and TCP headers TCP Segments Per Second The number of segments per second transferred via TCP TCP Retransmission Duplicate Received Percentage This plot graphs the percentage of incoming and outgoing bytes that were retransmitted High values for either of these is an indication of either a congested network dropping packets or long delays Retransmission occurs when no confirmation of receipt has occurred for the original package and the system has to resend the packet Duplicate received occurs when another system retransmits and a packet is received more than once For sites with large retransmission percentages such as web sites serving international content you will probably want to tune your TCP stack using the ndd command See the Solaris Tunable Parameters Reference Manual and Solaris Tuning Your TCP Stack page for more information Look specifically at the TCP retransmission timers TCP New Connection Rate The rate at which new TCP connections are created The Input or Passive Open rate is the rate at which the system is receiving new connections The Output or Active Open rate is the rate at which the system is actively making new connections to other systems TCP Number Open Connections The number of current TCP connections This includes long connections such as ssh rlogin as well as short ones like scp ftp TCP Reset Rate This graph shows the rate at which TCP ports are being reset i e connections being refused A high value here indicates a remote system may be port scanning or repeatedly attempting to access a closed port TCP Attempt Fail Rate This graph shows the rate at which the active TCP connections that the host is attempting are failing to open This is the value as shown by netstat s s tcpAttemptFails You can watch this value grow if you attempt to telnet to a host that you know will not accept the connection netstat s grep tcpAttemptFails telnet www caltech edu 64321 netstat s grep tcpAttemptFails TCP Listen Drop Rate The rate at which new connection attempts have been dropped from the listen queue This happens when the system is receiving new connection requests faster than it can handle them On systems running Apache this can happen when more people are making connections to your web server than you have Apache configured to handle In this case increase the MaxClients value in your Apache configuration file Sleeps on Mutex Rate Mutex is mutual exclusion locking of kernel resources If multiple CPUs try to get the same lock at the same time all but one CPU will sleep This graph shows the level at which sleeps are occurring NFS Server Call Rate This graph plots the rate of NFS calls to this server and the rate of NFS reads and writes services broken down into NFS v2 and v3 reads and writes The sum of v2reads v2writes

    Original URL path: https://www.orcaware.com/orca/docs/orcallator.html (2016-04-24)
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  • OrcaWare Technologies - Orca Frequently Asked Questions
    cfg at http www orcaware com orca pub which now create new output data file any time the number of columns or a name of a column changes so that Orca will not complain and all of your data will be plotted 2 2 Warning file orcallator temp percol 2001 02 22 was current and now is not First Orca considers a file to be current if the file s last modified time is within late interval seconds of the current time In other words Orca checks if a process is modifying the file to keep it current The late interval value is determined by the configuration file or set to the interval value if the configuration file does not set late interval Orca stat s the file when it first looks for files using the find files and determines that the file is current Any time after that Orca reads the file it stat s the file again and determines if it is current If there was a previous stat and the file was current followed by another stat and the file is not current then the message is printed The appearance of this message means that the process that has been updating the file has stopped updating it and this may be worth looking into This message is also seen when the data gathering program e g orcallator se opens a new log file at the end of a day and the old log file is no longer updated Orca tries to manage this situation when a file is no longer updated at the end of a day If the actual measurement interval is not consistent with Orca s configuration file interval 300 seconds then Orca s interval should be modified to match the actual measurement interval If you need to do this then delete the RRD files because they will keep the old interval and the input data will need to be reloaded into new RRD files Increasing the late interval may also remove this error 2 3 Warning cannot create Orca HTMLFile object cannot open home orca html o host1 monthly html htm for writing Too many open files This obviously happens with Orca runs out of open file descriptors Orca opens many file descriptors to do its work and it doesn t like to close them unless it needs to The first thing to check is the maximum number of file descriptors each process can have On some systems the login shell scripts lower the maximum number of open file descriptors a process may have To check this in a Csh shell variant csh tcsh then type limit descriptors or for Bourne shell variant sh bash then type ulimit n On all operating systems Orca should be able to use 256 file descriptors On some such as Linux Orca can open 1024 files at once If the number you are getting is less than 256 then raise this limit Some operating systems let you raise the limit such as Solaris while others do not such as Linux To try to raise the limit do limit descriptors 1024 or ulimit n 1024 If these commands do not work ask your system administrator how to do this There is a bug in Orca s older than 0 27b2 where Orca would not close a pipe file descriptor that is uncompressing a compressed percol file to Orca If your percol files are compressed then try either upgrading to 0 27b2 or later or apply the patch http www orcaware com orca pub patches orca 0 26 defunct processes patch txt to Orca 0 26 This should have Orca reduce its file descriptor count 2 4 Warning file orcallator host1 orcallator 2001 11 06 000 did exist and is now gone Orca prints this message when it found an input data file to read and when it goes to read it which may be a while later the file no longer exists When Orca is being used with orcallator se this message may occur when orcallator se compresses the previous day s percol or orcallator file that Orca found Solaris Orcallator se 3 1 What do I do about the error opt RICHPse bin se Unsupported platform sparcv9 SunOS 5 8 There are two solutions SE 3 2 is now available and you can upgrade to this version It is available at http www setoolkit com If you are using an SE version less than 3 2 then do this cd opt RICHPse bin ln se sparc 5 7 se sparc 5 8 ln se sparcv9 5 7 se sparcv9 5 8 3 2 Why does my background orcallator se process die in particular when I log out of the system that I started it on This sounds like orcallator se is started under the Bourne shell which kills background processes unless the process is started with nohup nohup se orcallator se 3 3 Why is the page scan rate is always zero even though sar says it is not It has been observed that on Solaris 2 5 1 the page scan rate is always zero This occurs with orcallator se version 1 23 or older The problem is that on older versions of SE the p vmstat scan variable is an integer and orcallator se was assuming a double The fix is to upgrade to orcallator se 1 24 or newer 3 4 Why are all the NFS server statistics zero On Solaris 2 6 there is a bug in the SE toolkit that prevents orcallator se from getting the NFS server statistics To fix this edit your RICHPse include kstat se file and change ifdef to if near the top of the file where it says ifdef MINOR VERSION 70 define rfs counter t uint64 t else to if MINOR VERSION 70 define rfs counter t uint64 t else 3 5 Why are my Ethernet bits second measurements all zero On 2 5 1 or older

    Original URL path: https://www.orcaware.com/orca/docs/FAQ.html (2016-04-24)
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  • orca - Make HTML & PNG plots of daily, weekly, monthly & yearly data
    are not set base dir directory If base dir is set then it is used to prepend to any file or directory based names that do not begin with These are currently state file html dir rrd dir and the find files option in the group options Optional General Options late interval Perl expression late interval is used to calculate the time interval between a file s last modification time and the time when that file is considered to be late for an update In this case an email message may be sent out using the warn email addresses Because different input files may be updated at different rates late interval takes an arbitrary Perl expression including mathematical expressions as its argument If the word interval occurs in the mathematical expression it is replaced with the sampling interval of the input data file in question This is useful for allowing the data files to update somewhat later than they would in an ideal world For example to add a 10 overhead to the sampling interval before an input file is considered late this would be used late interval 1 1 interval By default the input file s sampling interval is used as the late interval warn email email address email address warn email takes a list of email addresses of people to email when something goes wrong with either Orca or the input data files Currently email messages are sent out the following circumstances 1 When a file did exist and now is gone 2 When a file was being updated regularly and then no longer is updated By default nobody is emailed expire images 1 If expire images is set then meta files will be created for all generated PNG files If the Apache web server 1 3 2 or greater is being used then the following modifications must added to srm conf or httpd conf MetaDir web MetaFiles on MetaDir MetaSuffix meta MetaSuffix meta By default expiration of images is not enabled find times hours minutes hours minutes The find times option is used to tell Orca when to go and find new files This particularly useful when new input data files are created at midnight In this case something like find times 0 10 would work By default files are only searched for when Orca starts up html top title text The text is placed at the top of the main index html that Orca creates By default no addition text is placed at the top of the main index html html page header text The text is placed at the top of each HTML file that Orca creates By default no additional text is placed at the top of each HTML file html page footer text The text is placed at the bottom of each HTML file that Orca creates By default no additional text is placed at the bottom of each HTML file sub dir directory In certain cases Orca will not create sub directories for the different groups of files that it processes If you wish to force Orca to create sub directories then do this sub dir 1 Group Options The next step in configuring Orca is telling where to find the files to use as input a description of the columns of data comprising the file the interval at which the file is updated and where the measurement time is stored in the file This is stored into a group A generic example of a group and its options are group GROUP NAME1 find files filename1 filename2 column description column1 name column2 name date source file mtime interval 300 group GROUP NAME2 The key for a group in this example GROUP NAME1 and GROUP NAME2 is a descriptive name that is unique for all files and is used later when the plots to create are defined Files that share the same general format of column data may be grouped together The options for a particular group must be enclosed in the curly brackets s An unlimited number of groups may be listed Required Group Options find files path regexp path regexp The find files option tells Orca what data files to use as its input The arguments to find files may be a simple filename a complete path to a filename or a regular expression to find files The regular expression match is not the normal shell globing that the Bourne shell C shell or other shells use Rather Orca uses the Perl regular expressions to find files For example find files data source1 data source2 will have Orca use data source1 and data source2 as the inputs to Orca This could have also been written as find files data source d and both data files will be used In the two above examples Orca will assume that both data files represent data from the same source If this is not the case such as source1 is data from one place and source2 is data from another place then Orca needs to be told to treat the data from each file as distinct data sources This be accomplished in two ways The first is by creating another group set However this requires copying all of the text and makes maintenance of the configuration file complex The second and recommend approach is to place s around parts of the regular expression to tell Orca how to distinguish the two data files find files data source d This creates two groups one named source1 and the other named source2 which will be plotted separately One more example find files data solaris percol d 4 d 2 d 2 Z gz bz2 will use files of the form data solaris 2 6 olympia percol 1998 12 01 data solaris 2 6 olympia percol 1998 12 02 Z data solaris 2 5 1 sunridge percol 1998 12 01 gz data solaris 2 5 1 sunridge percol 1998 12 02 and treat the files in the olympia and sunridge directories as distinct but the files within each directory as from the same data source You ll notice that all but the first has the form This tells Perl to match the expression but not save the matched text in the 1 2 variables Orca uses the matched text to generate a subgroup name which is used to place files into different subgroups Here only the hostname should be used to generate a subgroup name hence all the for matching anything else If any of the paths or regular expressions given to find files do not begin with a and the base dir option was set then the base dir directory will be prepended to the path or regular expression interval seconds The interval options takes the number of seconds between updates for the input data files listed in this group column description column name column name column description first line For Orca to plot the data it needs to be told what each column of data holds This is accomplished by creating a text description for each column There are two ways this may be loaded into Orca If the input data files for a group do not change then the column names can be listed after column description column description date in packets s out packets s Files that have a column description as the first line of the file may use the argument first line to column description column description first line This informs Orca that it should read the first line of all the input data files for the column description Orca can handle different files in the same group that have different number of columns and column descriptions The only limitation here is that column descriptions are white space separated and therefore no spaces are allowed in the column descriptions date source column name column name date source file mtime The date source option tells Orca where time and date of the measurement is located The first form of the date source options lists the column name as given to column description that contains the Unix epoch time The second form with the file mtime argument tells Orca that the date and time for any new data in the file is the last modification time of the file date format string The date format option is only required if the column name argument to date source is used Current this argument is not used by Orca Optional Group Options filename compare Perl subroutine The filename compare option is used to sort the found filenames in a particular group This function must be written as though it were being passed to the Perl sort function which takes the two items to compare in the package global a and b variables instead of the array Use of this option has an additional effect on letting Orca know when it can flush data to the RRD files It determines this when it compares the previously loaded filename to the filename about to be loaded using the filename compare function If the result of the comparison is greater than 1 then the data is flushed If the comparison is equal to or less than 1 then the data is not flushed Orca uses a value of 1 instead of 0 since there are cases when the filenames should still be ordered but not flushed For example the orcallator cfg file uses the following subroutine for filenames of the form orcallator 2000 02 14 sub my ay am ad a d 4 d d d d my by bm bd b d 4 d d d d if my c ay by am bm ad 3 bd 3 return 2 c ad bd When Orca is about to load a new data file it compares the new filename with the previous name Using this function if the year or month is different then data gets flushed If these two are equal but the day divided by 8 is different then the data gets flushed So loading orcallator 2000 02 14 followed by orcallator 2000 02 15 will not cause a flush but when orcallator 2000 02 16 is about to be loaded previously loaded data will be flushed If the filename compare option is not used then the filenames are sorted using the Perl operator and data is not flushed until all of it is loaded reopen 1 Using the reopen option for a group instructs Orca to close and reopen any input data files when there is new data to be read This is of most use when an input data file is erased and rewritten by some other process Plot Options The final step is to tell Orca what plots to create and how to create them The general format for creating a plot is plot title Plot title source GROUP NAME1 data column name1 data 1024 column name2 column name3 legend First column legend Some math y legend Counts sec data min 0 data max 100 Unlike the group there is no key for generating a plot An unlimited number of plots can be created Some of the plot options if they have the two characters g or G will perform a substitution of this substring with the group name from the find files s matching g gets replaced with the exact match from and G gets replaced with the first character capitalized For example if find files olympia data was used to locate a file then g will be replaced with olympia and G replaced with Olympia This substitution is performed on the title and legend plot options Required Plot Options source group name The source argument should be a single group name from which data will be plotted Currently only data from a single group may be put into a single plot data Perl expression data regular expression The data plot option tells Orca the data sources to use to place in a single PNG plot At least one data option is required for a particular plot and as many as needed may be placed into a single plot Two forms of arguments to data are allowed The first form allows arbitrary Perl expressions including mathematical expressions that result in a number as a data source to plot The expression may contain the names of the columns as found in the group given to the source option The column names must be separated with white space from any other characters in the expression For example if you have number of bytes per second input and output and you want to plot the total number of bits per second you could do this plot source bytes per second data 8 in bytes per second out bytes per second The second form allows for matching column names that match a regular expression and plotting all of those columns that match the regular expression in a single plot To tell Orca that a regular expression is being used then only a single non whitespace separated argument to data is allowed In addition the argument must contain at least one set of parentheses s When a regular expression matches a column name the portion of the match in the s is placed into the normal Perl 1 2 etc variables Take the following configuration for example group throughput find files data solaris percol d 4 d 2 d 2 column description hme0Ipkt s hme0Opkt s hme1Ipkt s hme1Opkt s hme0InKB s hme0OuKB s hme1InKB s hme1OuKB s hme0IErr s hme0OErr s hme1IErr s hme1OErr s plot source throughput data d Ipkt s data 1Opkt s plot source throughput data d InKB s data 1OuKB s plot source throughput data d IErr s data 1OErr s If the following data files are found by Orca data solaris 2 6 olympia percol 1998 12 01 data solaris 2 6 olympia percol 1998 12 02 data solaris 2 5 1 sunridge percol 1998 12 01 data solaris 2 5 1 sunridge percol 1998 12 02 then separate plots will be created for olympia and sunridge with each plot containing the input and output number of packets per second By default when Orca finds a plot set with a regular expression match it will only find one match and then go on to the next plot set After it reaches the last plot set it will go back to the first plot set with a regular expression match and look for the next data that matches the regular expression The net result of this is that the generated HTML files using the above configuration will have links in this order hme0 Input Output Packets per Second hme0 Input Output Kilobytes per Second hme0 Input Output Errors per Second hme1 Input Output Packets per Second hme1 Input Output Kilobytes per Second hme1 Input Output Errors per Second If you wanted to have the links listed in order of hme0 and hme1 then you would add the flush regexps option to tell Orca to find all regular expression matches for a particular plot set and all plot sets before the plot set containing flush regexps before continuing on to the next plot set For example if flush regexps 1 were added to the plot set for InKB s and OuKB s then the order would be hme0 Input Output Packets per Second hme0 Input Output Kilobytes per Second hme1 Input Output Packets per Second hme1 Input Output Kilobytes per Second hme0 Input Output Errors per Second hme1 Input Output Errors per Second If you wanted to have all of the plots be listed in order of the type of data being plotted then you would add flush regexps 1 to all the plot sets and the order would be hme0 Input Output Packets per Second hme1 Input Output Packets per Second hme0 Input Output Kilobytes per Second hme1 Input Output Kilobytes per Second hme0 Input Output Errors per Second hme1 Input Output Errors per Second Data Source Optional Plot Options The following options are plot optional Like the data option multiple copies of these may be specified The first option of a particular type sets the option for the first data option the second option refers to the second data option etc data type type When defining data types Orca uses the same data types as provided by RRD These are a direct quote from the RRDcreate manual page GAUGE is for things like temperatures or number of people in a room or value of a RedHat share COUNTER is for continuous incrementing counters like the InOctets counter in a router The COUNTER data source assumes that the counter never decreases except when a counter overflows The update function takes the overflow into account The counter is stored as a per second rate When the counter overflows RRDtool checks if the overflow happened at the 32bit or 64bit border and acts accordingly by adding an appropriate value to the result DERIVE will store the the derivative of the line going from the last to the current value of the data source This can be useful for gauges for example to measure the rate of people entering or leaving a room Internally derive works exactly like COUNTER but without overflow checks So if your counter does not reset at 32 or 64 bit you might want to use DERIVE and combine it with a MIN value of 0 ABSOLUTE is for counters which get reset upon reading This is used for fast counters which tend to overflow So instead of reading them normally you reset them after every read to make sure you have a maximal time available before the next overflow If the data type is not specified for a data option it defaults to GAUGE data min number data max number data min and data max are optional entries defining the expected range of the supplied data If data min and or

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