I'm was stress-testing php application. After 4 hour of test apache stop answering on any query without errors in logs. Size of php application ~1k php files.
apache num: 30,
queries per second: degrade from 50 to 30 queries per second while testing (i think it was not eAceelerator problem),
system load average: from 20 to 10 while testing.
eAccelerator 0.9.5 [shm:mmap_anon sem:spinlock]
PHP 4.4.4-8 [ZE 1.3.0]
Using apache on Linux debian 2.6.8-3-686-smp #1 SMP Thu Sep 7 04:39:15 UTC 2006 i686
eaccelerator config:
eaccelerator.shm_size="128"
eaccelerator.cache_dir="/tmp/eaccelerator"
eaccelerator.enable="1"
eaccelerator.optimizer="0"
eaccelerator.check_mtime="1"
eaccelerator.debug="0"
eaccelerator.shm_max="0"
eaccelerator.shm_ttl="900"
eaccelerator.shm_prune_period="900"
eaccelerator.shm_only="1"
eaccelerator.compress="0"
eaccelerator.compress_level="1"
eaccelerator.log_file="/var/log/apache/eaccelerator.log"
eaccelerator.allowed_admin_path=/var
eaccelerator.sessions="shm_only"
session.save_handler=eaccelerator
backtrace log and core files download here http://89.108.89.92/apache.log.tar.bz2
dump script
#!/bin/bash
apache_children=`ps fax | grep "/usr/sbin/apache" | grep -v grep | awk '{print $1;}'`
cat > /tmp/bt.gdb <<EOF
bt full
generate-core-file
q
EOF
for each in $apache_children; do
sudo gdb -p $each -x /tmp/bt.gdb | tee "apache.$each.log";
done
it was deadlock in _mm_lock function?
