-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 To whom it may concern,
On 5/23/2011 10:45 PM, tom...@r322.com wrote: > I have a problem where a simple wget call to docs/config/valve.html can > sometimes take up to 15 seconds to process. :( > I have a script that does a wget call to valve.html every 5 seconds. > Most of the time it's fast. However, today in the past 6 hours I had 13 > cases where it took over 3 seconds for wget to return valve.html. This > is happening across 7 servers pretty consistently and I can't figure out > why. Any suggestions to help me narrow down the problem? Can you run sar/iostat/vmstat/etc. simultaneously and graph the system values against your wget response times? You may find that something is spiking the CPU, I/O, NIC, etc. at those times. Are you on a virtual machine, perhaps? I've found that VMs (particularly OpenVZ and other Virtuozzo-derived flavors) are notorious for having bizarre I/O stalls on the virtual containers. > Server version: Apache Tomcat/6.0.20 It certainly couldn't hurt to upgrade to the most recent version: Tomcat 6.0.32. Remember to carefully read the changelog. > JVM Version: 1.6.0_22-b04 > JVM Vendor: Sun Microsystems Inc. It probably won't make a difference, but I believe that's a version or two behind as well. - -chris -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk3eYRIACgkQ9CaO5/Lv0PC6FgCgsd0XWEbxjRfjVInpZUT+vojO V4oAoKypVdw6tQPges38sVpzNwjWwrZ6 =iePl -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
