Fine-grained locking for POSIX local sockets (UNIX domain sockets)

Scott Long scottl at
Thu May 11 16:04:54 UTC 2006

Robert Watson wrote:

> On Wed, 10 May 2006, David Xu wrote:
>> Fixing one of big lock contentions is not enough, you have to fix them 
>> all, it is easy to see that a second contention becomes a top one. :-)
> So I guess the real question is: do we want to merge the UNIX domain 
> socket locking work?  The MySQL gains sound good, the performance drop 
> under very high load seems problematic, and there are more general 
> questions about performance with other workloads.
> Maintaining this patch for a month or so is no problem, but as the tree 
> changes it will get harder.
> Robert N M Watson

The only thing I'm afraid of is that it'll get pushed onto the 
back-burner once it's in CVS, and we'll have a mad scramble to fix
it when it's time for 7.0.  That's not a show-stopper for it going
in, as there are also numerous benefits.  It's just something that
needs to be tracked and worked on.


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