Bug #2502
tmpfs(5) not fully MPSAFE
| Status: | Closed | Start date: | 01/28/2013 | |
|---|---|---|---|---|
| Priority: | Normal | Due date: | ||
| Assignee: | - | % Done: | 0% |
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| Category: | - | |||
| Target version: | - |
Description
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.
Related todos
