Tom Lane wrote:
> Bruce Momjian <> writes:
> > Well, then what real options do we have?  It seems the patch is just
> > required for all branches.
> I think it would be possible to fix it in a less invasive way by taking
> and releasing the ControlLock an extra time in SimpleLruReadPage and
> SimpleLruWritePage.  What's indeterminate about that is the performance
> cost.  In situations where there's not a lot of SLRU I/O traffic it's
> presumably negligible, but in a case like Jim's where there's evidently
> a *whole* lot of traffic, it might be a killer.

To me a performance problem is much harder get reports on and to locate
than a real fix to the problem.  I think if a few people eyeball the
patch, it is OK for application.  Are backpatches significantly

  Bruce Momjian                        |               |  (610) 359-1001
  +  If your life is a hard drive,     |  13 Roberts Road
  +  Christ can be your backup.        |  Newtown Square, Pennsylvania 19073

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