Re: [Sipp-users] IBM SIPp Enhancements

[Dragos V. <vin...@fo...>]

OMG!!! Charles, thanks a lot! It's great to see that big companies like 
Intel and HP are supporting the development of free tools by not 
forgetting to contribute back. I hope that this would inspire more 
people to contribute.


Charles P Wright wrote:
> Hello All,
>
> At IBM research we have developed several enhancements for SIPp that
> improve performance and flexibility.  I have attached a .tar.gz of the
> patches and a "series" file that lists them in the order they should be
> applied (against the 2006/10/04 snapshot).  I've included a brief
> description of each of the patches below.
>
> Charles
>
> These patches allow SIPp to be used for our VoIP user-model based benchmark.
> There are some internal scalability improvements that do not affect usage, and
> also a few minor external changes to increase the flexibility of reporting and
> pauses.
>
> To enable distributed pauses, you must compile with the GNU Scientific Library
> (GSL).  As SIPp does not have an autoconfiguration script, you create a file
> named "local.mk" with the following lines:
>
>       EXTRACPPFLAGS=-DHAVE_GSL
>       EXTRACFLAGS=-DHAVE_GSL
>       EXTRALIBS=-lgsl -lgslcblas
>
> You can obtain GSL from http://www.gnu.org/software/gsl/.  GSL RPMs are
> also available on many distributions, including RedHat 7-9, Fedora 1-5,
> Redhat AS 4, and SuSE 9.X and 10.
>
> The external changes to SIPp are one new command line option (-users), which
> specifies a fixed number of users; the 'Q' key stops SIPp in its tracks (just
> like control-C); and several modifications to the XML scenario file:
>
> - The <pause /> item has three new types of pauses: normal, lognormal, and
>   exponential.  To specify a statistically distributed pause add its name as a
>   parameter with a value (e.g., <pause normal="true" ... />).
>
> - Normal pauses require a mean and standard deviation.  For example:
>       <pause normal="true" mean="60000" stdev="15000" />
>   Provides a normal pause with a mean of 60 seconds (i.e. 60,000 ms) and a
>   standard deviation of 15 seconds.  The mean and standard deviation are
>   specified as integer milliseconds.
>
> - Lognormal pauses are specified in terms of the mean and standard deviation
>   of the normal distribution that is exponentiated. For example:
>       <pause lognormal="true" mean="12.28" stdev="1" />
>   Creates a distribution's whose natural logarithm has a mean of 12.28 and a
>   standard deviation of 1.  The mean and standard deviation are specified as
>   double values (in milliseconds).
>
> - Exponential pauses require an integer mean.  For example:
>       <pause exponential="true" mean="900000" />
>   Creates an exponentially distributed pause with a mean of 15 minutes.
>
> - Each send or receive message may start and end a response time duration.
>   Unmodified SIPp uses a single RTD value per call, thus the XML used a boolean
>   value to indicate starting an RTD (with start_rtd) and ending an RTD with
>   (rtd) as follows:
>       <send start_rtd="true">
>           ...
>       </send>
>       <recv response="200" rtd="true" />
>   Our new SIPp supports the same syntax, mapping "true" to RTD 1.  We also
>   support an arbitrary number of RTD timers (determined at compile time,
>   currently 5).  To use a new timer, specify start_rtd and rtd as an integer
>   from 1 to 5.  You can view the new RTD timers by pressing 5, 6, 7, and 8.
>
> - We also support five generic message counters.  Simply add the new "counter"
>   parameter to a send or receive (from 1 to 5).  When that message is
>   processed, we add one to the counter.  For example:
>       <recv request="INVITE" counter="1" />
>       ..
>       <recv request="BYE" counter="2" />
>   Increments counter 1 when the INVITE is recieved and counter 2 when the BYE
>   is recieved.
>
> - The <nop /> item can be used for rtd, start_rtd, and count.
>
> These patches apply to SIPp 2006-10-04.  You can use the quilt tool to apply
> these patches (http://savannah.nongnu.org/projects/quilt/), or manually apply
> them in the order listed in series (the following descriptions are also in
> order):
>
> - dynamicpeer
>       Use a dynamically allocated peer tag, this reduces the memory usage per
>       call by an order of magnitude.
>
> - pausecleanup
>       Clean up the handling of the pause keyword.
>
> - distpause
>       Normal, lognormal, and exponentially distributed pauses.  These pauses
>       are based on GSL, and the infrastructure is there for any type of
>       pause that someone wants to add.
>
> - rtd
>       Allows multiple response times to be counted.
>
> - counter
>       Increments a generic counter on a recieve or send.
>
> - runqueue
>       Divides calls into paused calls and running calls.  Paused calls are
>       managed using a timing wheel ala Varghese's 1996 article.
>
> - users
>       The -users option begins users calls at startup, and maintains a fixed
>       number of calls.  Only half of a timer cycle can be used for call
>       startup.
>
> - hardquit
>       The 'Q' key (or control thread) sends a SIGINT to itself, thus causing
>       SIPp to quit immediately.
>
> - nopcount
>       Allow nops to be used for RTDs and counts.
>
> - buffsize
>       Allows the socket receive buffer to be increased on the command line.
>
> - lastheaderstrings
>       Uses a custom version of tolower for strcasestr2.
>
>       Eliminates the need for memset of large strings (e.g, there was a 20KB
>       memset for each message processed).
>
> - rsaport
>       Uses port 5060 by default if the -rsa option does not specify a port.
>
> - closefdsinbg
>       Close all file descriptors after we create the child process.
>
> - printscreenkey
>       'S' key dumps the screens to a file (this can be used over the control
>       socket, a signal cannot)
>
> - stdev
>       Add a standard deviation column for call length and response time
>
> - rateincrement
>       Increase the rate from n to m at some interval.
>
> - authtweak
>       Check dialog_authentication before running a strstr on every message.
>
> - retransstat
>       Add Retransmissions(P) and Retransmissions(C) columns to the stat file.
>
> - tcpwait
>       Allow EAGAIN to be handled gracefully more than once.
>
> - openloop
>       Allow -l 0 to be specified so that a UAC scenario can act as an open
>       loop workload generator.
>
> (See attached file: sipp-patches-2006-10-04-ibm1.tar.gz)
> ------------------------------------------------------------------------
>
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-- 
-----------------------------------------
Dipl. Eng. Dragos Vingarzan
FOKUS/NGNI
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Mobile +49 (0)163 - 159 - 5221
eMail vin...@fo...
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We could change the world if God would give us the source code...
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