I'm doing a ab test

 ab -n 10000 -c 10 http://www.mysite.com/

this is the output

Benchmarking www.mysite.com (be patient)
Completed 1000 requests
Completed 2000 requests
Completed 3000 requests
Completed 4000 requests
Completed 5000 requests
Completed 6000 requests
Completed 7000 requests
Completed 8000 requests
socket: Cannot allocate memory (12)

I've tried it several times sometimes it breaks even earlier. I have alot of free memory this is from top while im running ab

Mem:    524288k total,   269968k used,   254320k free,        0k buffers

Can someone explain?


You said "vps" in your tags, my guess is you're hitting a container resource limit, probably concurrent open ports. Turn the -c concurrency down and see if it helps.

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