Mercurial > hg > nginx-quic
annotate auto/have @ 4164:c48662671609 stable-1.0
Merging r4130, r4131, r4135:
Linux AIO related fixes:
*) Fixing Linux AIO syscalls return value handling:
syscall(2) uses usual libc convention, it returns -1 on error and
sets errno. Obsolete _syscall(2) returns negative value of error.
*) Fixing Linux AIO initiatialization: AIO operations are disabled
if kernel does not support them. Previously worker just exited.
*) 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.
author | Igor Sysoev <igor@sysoev.ru> |
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date | Fri, 30 Sep 2011 14:12:53 +0000 |
parents | 42d11f017717 |
children | d620f497c50f |
rev | line source |
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444
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1 |
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2 # Copyright (C) Igor Sysoev |
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4 |
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5 cat << END >> $NGX_AUTO_CONFIG_H |
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7 #ifndef $have |
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8 #define $have 1 |
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9 #endif |
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11 END |