Ah and notice that this is a very critical problem. The whole server basically goes down and restart of apache is impossible. The all childs that has hung up basically has to bee taken down with kill -9 one by one.
Hannes On 18 January 2011 15:56, Hannes Landeholm <[email protected]> wrote: > I'm having problems with childs hanging with 100% CPU whenever the server > runs out of memory. > > Backtrace: > > (gdb) backtrace > #0 0x00002add8831e8a8 in *__GI___poll (fds=0x7fff26db0e70, nfds=2, > timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:83 > #1 0x00002add87e1dbf2 in apr_poll () from /usr/lib/libapr-1.so.0 > #2 0x0000000000481d47 in child_main () > #3 0x00000000004831d4 in make_child () > #4 0x0000000000483f63 in ap_mpm_run () > #5 0x00000000004297e9 in main () > > Hannes > > > > On 13 January 2011 22:32, Marcelo Coelho <[email protected]> wrote: > >> Hi! >> >> Peruser patch (v14) >> >> Patch from RC2: >> >> http://opensource.mco2.net/download/apache/peruser/peruser-rc2-to-rc3-v14.patch >> >> Full patch from vanilla Apache 2.2.17: >> >> http://opensource.mco2.net/download/apache/peruser/peruser-rc3-full-v14.patch >> >> Changes (from RC2): >> >> * (v14) Bug fix: multiplexer segfault when passing big requests to >> processors (URI with ~8192 bytes and big Referer header) >> * (v14) Performance: faster idle server maintenance >> * (v14) Clean-up: removed .orig files >> * (v13) Code more "APR-ized" >> * (v13) Bug fix: apachectl graceful works, even under high load. >> * (v12) Not released to public >> * (v11) Not released to public >> * (v10) Bug fixed: fixed some segfaults >> * (v10) Bug fixed: work around to a flaw in apr-util (as PR 43857) >> * (v9) Not released to public >> * (v8) Bug fixed: apachectl graceful now is more stable, like RC2 version >> * (v8) Bug fixed: fixed some segfaults (thank you Dave Steinberg for >> sending your core dumps) >> * (v8) Bug fixed: server dies with infinite loop script, reported by Taavi >> Sannik >> * (v8) Bug fixed: "long lost child" error, reported by Taavi Sannik >> * (v8) Performance: update_all_counters() rewritten without malloc() and >> free() >> * (v7) Bug fixed: multiplexers now can clone a processor child if all >> workers are busy. >> * (v6) Bug fixed: apachectl graceful now working properly, without "long >> lost child" errors >> * (v5) Not released to public >> * (v4) Code cleanup >> * (v4) Performance: childs are started in ~25ms, 40 times faster than in >> RC2 (~1000ms) >> * (v4) Bug fixed: now checking if total_processors is 1 (first access) to >> start StartProcessors >> * (v3) Performance: new child type (CHILD_TYPE_RESERVED) to avoid >> collision (2 childs trying to get the same free slot) >> * (v3) Bug fixed: fixed a bug in RC2, wait_timeout was always 0, never >> sleeping to wait for new workers. >> * (v2) Performance: StartProcessors, new configuration directive to >> control the number of child processors per vhost at startup >> * (v2) Performance: childs are started in ~50ms, 20 times faster than in >> RC2 (~1000ms) >> * (v1) Performance: faster to lookup for free slots (this is important on >> busy servers, with many virtual hosts) >> * (v1) Performance: faster to count processors, one single loop counts all >> processors >> * (v1) Bug fixed: bug when MinSpareProcessors is set to 0 (now all workers >> processes are killed when idle_timeout is reached) >> * (v1) Bug fixed: Free-up slots when a WORKER or PROCESSOR unexpectedly >> dies >> >> >> Regards, >> >> -- >> Marcelo Coelho >> marcelo at mco2.com.br >> >> >> _______________________________________________ >> Peruser mailing list >> [email protected] >> http://www.telana.com/mailman/listinfo/peruser >> > >
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