hi,i'm using a self compiled httpd 2.4.23 with event MPM as a dedicated HTTPS reverse proxy to several backend services provided by oracle components. platform for this server is RHEL7 on a POWER7 LPAR.
since a few weeks im having a problem that httpd is "stalling" from time to time under higher load for a few minutes. during this period no logs are written, browsers "hang" or give an unspecific ssl connection error (firefox). the situation resolves by itself without intervention. "higher load" only refers to apache utilization, common operating system parameters are fine all the time.
once i had the chance to attach strace to a httpd process, it just showed "read(". the interesting point in my opinion is that i saw this process "hanging" even after httpd as a whole started working again. it stayed in this condition for a long time before dying, it could have been hours. as i could see from the process list a second child process was started that apparently resumed the service.
i have no other clues what is happening inside apache as there are no logs. operating system logs are also unsuspicious. can anyone give me a hint what to do?
thx matthias --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx
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