On Thu, 2 May 2002 [EMAIL PROTECTED] wrote: > First of all thank you for your interest. > I will download the latest code and try this out. I do have the debug mode > enabled so I will sent you any errors (although I have not noticed anything > special). > I don't think though that I can reproduce the problem myself. > About the gdb, I have no experience of how to attach to the process but I will > do my best to find a colleague that does.
Short course on gdb: ps -aux |grep httpd ( or ps -fea ) Find the PID of the process that takes all the CPU, then gdb httpd PID and inside do a 'bt' ( backtrace ), it'll generate a stacktrace we can use. Costin > Thanks, > Costas > > > > Can you try the CVS head, and see if it still happens ? > > If so, can you give us more details that would allow to > > reproduce it ? > > > > Messages like 'it doesn't work for me, you figure out why' > > are not very helpfull. > > > > At least enable the debug messages, let it run until it > > hungs, then maybe trim the log and send the last entries. > > Or use gdb to attach to the problem process and do a > > stack trace. > > > > Costin > > > > On Wed, 1 May 2002, Costas Stergiou wrote: > > > > > Hi, > > > I have an installation of Apache 1.3.19 + Tomcat 4.0.3 > > > on a aix4.3 machine with IBM JDK 1.3.0. I have two tomcat > > > engines and I use the lb worker of mod_jk to balance user > > > request to these two engines. > > > > > > The problem is that some httpd processes seem to go > > > into some cpu performance tasks and start consuming all > > > the cpu of the machine (2processors, 2GB mem). After > > > some time almost all available CPU is consumed by the > > > apache processes. If I kill the child processes that cause > > > the problem, the load falls back to normal. At the same time, > > > I notice that I have excessive CPU usage in one of the > > > tomcat instances. > > > > > > The problem keeps recurring all the time (almost every hour). > > > I read in the mail-archives about similar problems but I didn't > > > find a good answer. > > > > > > The version of mod_jk is the one in jakarta-tomcat-connectors-4.0.2.01 > > > I compiled the source on the same machine (aix). > > > > > > I have to say that I have noticed similar problems on many more > > > apache installations that have similar installations (apache, lb + > > > 2 or more tomcat engines) with older versions of mod_jk and tomcat. > > > > > > Actually, the above problem makes the lb worker unusable since > > > I cannot trust the setup in my production environment. > > > > > > Please, any idea or patches or whatever will be very helpful. > > > Thanks very much for any ideas, > > > Costas > > > > > > > > > > > > > > > > > > -- > > To unsubscribe: <mailto:[EMAIL PROTECTED]> > > For additional commands: <mailto:[EMAIL PROTECTED]> > > Troubles with the list: <mailto:[EMAIL PROTECTED]> > > > > > > > -- > To unsubscribe: <mailto:[EMAIL PROTECTED]> > For additional commands: <mailto:[EMAIL PROTECTED]> > Troubles with the list: <mailto:[EMAIL PROTECTED]> > > -- To unsubscribe: <mailto:[EMAIL PROTECTED]> For additional commands: <mailto:[EMAIL PROTECTED]> Troubles with the list: <mailto:[EMAIL PROTECTED]>
