tree b55c3a854d9d592aae14eecaa9807f5679219dc9
parent a823c550e45bb653c5d660cceaea3f153b3b28e8
author Igor Sysoev <igor@sysoev.ru> 1316503809 +0000
committer Igor Sysoev <igor@sysoev.ru> 1316503809 +0000

The "worker_aio_requests" directive.

The default value is 32 AIO simultaneous requests per worker. Previously
they were hardcoded to 1024, and it was too large, since Linux allocated
them early on io_setup(), but not on request itself. So with default value
of /proc/sys/fs/aio-max-nr equal to 65536 only 64 worker processes could
be run simultaneously. 32 AIO requests are enough for modern disks even if
server runs only 1 worker.