PERFORCE change 100089 for review
Robert Watson
rwatson at FreeBSD.org
Mon Jun 26 23:14:38 UTC 2006
On Mon, 26 Jun 2006, John Baldwin wrote:
> On Monday 26 June 2006 16:54, Kip Macy wrote:
>> http://perforce.freebsd.org/chv.cgi?CH=100089
>>
>> Change 100089 by kmacy at kmacy_storage:sun4v_work_sleepq on 2006/06/26
> 20:53:51
>>
>> add profiling for rwlocks
>> not convinced of correctness as there don't appear to be any contended
> rwlocks on my workloads
>
> Few things use them currently. I have a patch to make the name cache use
> them if you want it.
You may already have seen this, but I have a UNIX domain socket re-locking in
//depot/user/rwatson/proto/src/sys/kern/uipc_usrreq.c that uses rwlocks and
finer-grained mutexes, among other things. Ideally this can generate some
contention (although perhaps not too much).
Robert N M Watson
Computer Laboratory
University of Cambridge
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