DragonFly bugs List (threaded) for 2013-01
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[DragonFlyBSD - Bug #2502] tmpfs(5) not fully MPSAFE
Issue #2502 has been reported by ftigeot.
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Bug #2502: tmpfs(5) not fully MPSAFE
http://bugs.dragonflybsd.org/issues/2502
Author: ftigeot
Status: New
Priority: Normal
Assignee:
Category:
Target version:
Bulk building packages with ports-mgmt/poudriere on a 16 cores/32 threads machine is very slow.
The system exhibits high level of mp_token contention.
The functions grabbing it the most are:
vop_inactive vop_readdir vop_setattr vop_ncreate
vop_close vop_nresolv vop_nlink vop_putpage
with vop_inactive() by far the worst offender.
As the only non fully-MPSAFE used filesystem, tmpfs(5) is an obvious culprit.
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