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Type:
Bug
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Status: Closed
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Priority:
Major - P3
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Resolution: Done
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Affects Version/s: 2.6.10
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Fix Version/s: None
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Component/s: Networking
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Labels:None
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Operating System:ALL
There are some logs as below show up in mongod start progress:
2015-06-13T04:08:01.238+0800 [initandlisten] pthread_create failed: errno:11 Resource temporarily unavailable
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2015-06-13T04:08:01.238+0800 [initandlisten] can't create new thread, closing connection
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...
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2015-06-13T04:08:21.247+0800 [initandlisten] pthread_create failed: errno:11 Resource temporarily unavailable
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2015-06-13T04:08:21.248+0800 [initandlisten] can't create new thread, closing connection
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And the limits and threads count of mongod instance that I collected as below:
2015-06-13_04:08:03
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limits:
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[mongod #28309 -- limits]
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Limit Soft Limit Hard Limit Units
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Max cpu time unlimited unlimited seconds
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Max file size unlimited unlimited bytes
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Max data size unlimited unlimited bytes
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Max stack size 8388608 unlimited bytes
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Max core file size 0 unlimited bytes
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Max resident set unlimited unlimited bytes
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Max processes 655350 655350 processes
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Max open files 655350 655350 files
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Max locked memory 65536 65536 bytes
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Max address space unlimited unlimited bytes
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Max file locks unlimited unlimited locks
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Max pending signals 513987 513987 signals
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Max msgqueue size 819200 819200 bytes
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Max nice priority 0 0
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Max realtime priority 0 0
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Max realtime timeout unlimited unlimited us
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threads_count:
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[mongod #28309 -- limits]
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97
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limits:
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[mongod #28309 -- limits]
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Limit Soft Limit Hard Limit Units
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Max cpu time unlimited unlimited seconds
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Max file size unlimited unlimited bytes
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Max data size unlimited unlimited bytes
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Max stack size 8388608 unlimited bytes
|
Max core file size 0 unlimited bytes
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Max resident set unlimited unlimited bytes
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Max processes 655350 655350 processes
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Max open files 655350 655350 files
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Max locked memory 65536 65536 bytes
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Max address space unlimited unlimited bytes
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Max file locks unlimited unlimited locks
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Max pending signals 513987 513987 signals
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Max msgqueue size 819200 819200 bytes
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Max nice priority 0 0
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Max realtime priority 0 0
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Max realtime timeout unlimited unlimited us
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threads_count:
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[mongod #28309 -- limits]
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97
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I'm confused that the threads of mongod instance is less than 1000, and less than 655350, why log show that? Is it a bug?
ps. This (RS) member have more than 10k databases and 700k collections( with indexes).
ps. I use grab-mongodb-limits-and-threads.sh to get limits and threads count info above.
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grab-mongodb-limits-and-threads.sh |
#!/bin/bash
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return-limits(){
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for process in $@; do
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process_pids=`ps -C $process -o pid --no-headers | cut -d " " -f 2`
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if [ -z $@ ]; then
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echo "[no $process running]"
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else
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for pid in $process_pids; do
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echo "[$process #$pid -- limits]"
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cat /proc/$pid/limits
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done
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fi
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done
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}
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return-tasks(){
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for process in $@; do
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process_pids=`ps -C $process -o pid --no-headers | cut -d " " -f 2`
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if [ -z $@ ]; then
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echo "[no $process running]"
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else
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for pid in $process_pids; do
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echo "[$process #$pid -- limits]"
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ls /proc/$pid/task | wc -l
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done
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fi
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done
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}
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date +%F_%T
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echo "limits:"
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return-limits mongod
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echo "threads_count:"
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return-tasks mongod
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