Mercurial > hg > nginx-quic
view auto/endianess @ 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> |
---|---|
date | Fri, 30 Sep 2011 14:12:53 +0000 |
parents | 694d285ec752 |
children | d620f497c50f |
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# Copyright (C) Igor Sysoev echo $ngx_n "checking for system endianess ...$ngx_c" echo >> $NGX_ERR echo "checking for system endianess" >> $NGX_ERR cat << END > $NGX_AUTOTEST.c int main() { int i = 0x11223344; char *p; p = (char *) &i; if (*p == 0x44) return 0; return 1; } END ngx_test="$CC $CC_TEST_FLAGS $CC_AUX_FLAGS \ -o $NGX_AUTOTEST $NGX_AUTOTEST.c $NGX_LD_OPT $ngx_feature_libs" eval "$ngx_test >> $NGX_AUTOCONF_ERR 2>&1" if [ -x $NGX_AUTOTEST ]; then if $NGX_AUTOTEST >/dev/null 2>&1; then echo " little endianess" have=NGX_HAVE_LITTLE_ENDIAN . auto/have else echo " big endianess" fi rm $NGX_AUTOTEST* else rm $NGX_AUTOTEST* echo echo "$0: error: can not detect system endianess" exit 1 fi