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* ext/etc/etc.c (etc_nprocessors_affin): minor spell fix.

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48081 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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kosaki 2014-10-21 18:46:46 +00:00
parent 0fa75e813e
commit dfe56d3662
2 changed files with 8 additions and 4 deletions
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ChangeLog
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@ -1,3 +1,7 @@
Wed Oct 22 03:37:00 2014 KOSAKI Motohiro <kosaki.motohiro@gmail.com>
* ext/etc/etc.c (etc_nprocessors_affin): minor spell fix.
Wed Oct 22 03:33:58 2014 KOSAKI Motohiro <kosaki.motohiro@gmail.com>
* ext/etc/etc.c (etc_nprocessors_affin): optimize memory usege a

8
ext/etc/etc.c
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@ -928,11 +928,11 @@ etc_nprocessors_affin(void)
* The precious way is to use /sys/devices/system/cpu/online. But there are
* two problems,
* - Costly calculation
* It is minor issue, but possibly kill the benefit of parallel processing.
* It is a minor issue, but possibly kill a benefit of a parallel processing.
* - No guarantee to exist /sys/devices/system/cpu/online
* This is an issue especially when using containers.
* So, we use hardcode number for workaround. Current linux kernel
* (Linux 3.17) support 8192 cpus at maximum. Then 16384 is enough large.
* This is an issue especially when using Linux containers.
* So, we use hardcode number for a workaround. Current linux kernel
* (Linux 3.17) support 8192 cpus at maximum. Then 16384 must be enough.
*/
for (n=64; n < 16384; n *= 2) {
size = CPU_ALLOC_SIZE(n);