-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Peter,
On 8/4/2010 3:33 AM, Peter Buning wrote: > Hi Chris, > > Am 03.08.2010 22:08, schrieb Christopher Schultz: >> -----BEGIN PGP SIGNED MESSAGE----- >> Hash: SHA1 >> >> Peter, >> >> On 8/3/2010 10:55 AM, Peter Buning wrote: >> >>> we tested our tomcat 5.5 server (Debian system) with the apache >>> benchmark tool. We send requests for a small png-file (300 bytes). >>> Nearly all requests were done in 0 or 1 milliseconds. But there were a >>> few request which needed more than 10 ms and the slowest request needed >>> 106 ms. >>> >> Over what period of time? How often do the 106 and/or 10 responses >> occur? You may be encountering some simple thing like the OS wanting to >> get some of its own work done occasionally. >> > The slower response times are relative seldom, nearly 0,1 % of the > requests. I think you are right and the OS is working "something" in > this period. I just would like to understand exactly what happens. I > will continue to search for the reasons in this direction. Try using 'sar' (you may have to install it... I don't think Debian installs it by default). >>> the 106 ms is logged in the access log file. We used the %D pattern for >>> the request time in millis. >>> >>> It seems not to be a network problem. We can see the same behavior with >>> a remote and a localhost test. Nevertheless, does anybody know, when >>> tomact exactly starts and stop the time for logging the request? >>> >> The source code for org.apache.catalina.valves.AccessLogValve is >> available here: >> >> >>> http://svn.apache.org/repos/asf/tomcat/tc5.5.x/tags/TOMCAT_5_5_30/container/catalina/src/share/org/apache/catalina/valves/AccessLogValve.java >>> >>> >> Look at the "invoke" menu. Of course, I meant "method", not "menu". ;) - -chris -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkxZbXAACgkQ9CaO5/Lv0PBmWwCfaysShxyRIbreEALGSBAYnAWh aBkAmQGaJBjNG+6zRF1dhgSH92z5JoKN =CcYD -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
