Hi Nickolay, Couple things missing are OS and libevent version. :)
You may want to try preloading libsegfault, that'd give us a bit more information. Verify you're updated on the latest 1.4 libevent too. Otherwise there's not much useful info I see. Matt On 6/19/11 2:52 AM, Kutovoy Nickolay wrote: > Unfortunately I can't reproduce it as the load is gone now, also - no > logs, almost nothing. It's not the first time this happened. > > [root@memcache1 ~]# memcached -h > memcached 1.4.5 > > > ps axf: memcached -d -p 11211 -u nobody -c 4096 -m 7168 > > > > [root@memcache1 ~]# free > total used free shared buffers > cached > Mem: 6099872 1257096 4842776 0 149932 > 665644 > -/+ buffers/cache: 441520 5658352 > Swap: 8159224 17452 8141772 > > from what can I see in dmesg: > > possible SYN flooding on port 11211. Sending cookies. > possible SYN flooding on port 11211. Sending cookies. > possible SYN flooding on port 11211. Sending cookies. > > cpuinfo: 8 cores > > processor : 7 > vendor_id : GenuineIntel > cpu family : 6 > model : 26 > model name : Intel(R) Xeon(R) CPU L5520 @ 2.27GHz > stepping : 5 > cpu MHz : 2261.060 > cache size : 8192 KB > physical id : 1 > siblings : 8 > core id : 3 > cpu cores : 4 > apicid : 23 > fpu : yes > fpu_exception : yes > cpuid level : 11 > wp : yes > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge > mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall > nx rdtscp lm constant_tsc ida nonstop_tsc pni monitor ds_cpl vmx est > tm2 ssse3 cx16 xtpr sse4_1 sse4_2 popcnt lahf_lm > bogomips : 4521.97 > clflush size : 64 > cache_alignment : 64 > address sizes : 40 bits physical, 48 bits virtual > power management: [8] > > > [root@memcache1 ~]# top > top - 09:51:50 up 67 days, 12:57, 1 user, load average: 0.01, 0.02, > 0.00 > Tasks: 126 total, 1 running, 125 sleeping, 0 stopped, 0 zombie > Cpu(s): 0.2%us, 0.3%sy, 0.0%ni, 98.9%id, 0.0%wa, 0.0%hi, > 0.6%si, 0.0%st > Mem: 6099872k total, 1256848k used, 4843024k free, 149956k > buffers > Swap: 8159224k total, 17452k used, 8141772k free, 665656k > cached > > PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ > COMMAND > 25427 nobody 15 0 433m 321m 400 S 4.7 5.4 112:29.40 > memcached > 2854 root 18 0 10232 612 592 S 0.3 0.0 9:58.64 hald- > addon- > stor
