0

I am trying to create 4000+ docker containers via separate demons (To avoid the barrier of 1023 veth’s per bridge). But I am getting

bash: fork: Cannot allocate memory

error around 1800.I have increased system-wide resources (ulimit) and there are plenty of inodes and memory left. Docker version 1.8 RedHat version 7

Raphael Ahrens
9,8715 gold badges39 silver badges53 bronze badges
asked Nov 4, 2015 at 12:02
2
  • what does free report ? Commented Nov 4, 2015 at 12:53
  • Mem: 257742/19147 swap: 16383/0 Commented Nov 4, 2015 at 13:30

2 Answers 2

0

Bash does not use vfork and bash is huge.

This causes many forks to comsume a lot of virtual memory.

This is most likely a problem that is caused by the real memory resources on the system than by something you can control via ulimit.

Did you try to use the Bourne Shell or ksh93? Both use vfork() to optimize the performance.

answered Nov 4, 2015 at 13:18
0

The problem was with the docker zombie process which was eating up the kernel process capacity have been able to solve the problem by increasing kernel.pid_max

answered Nov 5, 2015 at 7:54

You must log in to answer this question.

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.