| From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | Manfred Spraul <manfred(at)colorfullife(dot)com> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, PostgreSQL-patches <pgsql-patches(at)postgresql(dot)org>, markw(at)osdl(dot)org |
| Subject: | Re: update i386 spinlock for hyperthreading |
| Date: | 2003-12-30 03:37:45 |
| Message-ID: | 200312300337.hBU3bjP01804@candle.pha.pa.us |
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| Lists: | pgsql-general pgsql-hackers pgsql-patches |
Manfred Spraul wrote:
> The scary part from the system perspective are the 35 million context
> switches that were generated by the BufMgrLock and the LockMgrLock. I
> remember there were patches that tried other algorithms instead of the
> simple LRU for the buffer manager. Has anyone tried to change the
> locking of the buffer manager?
CVS HEAD already has an Adaptive Replacement Cache (ARC) for buffer
replacement.
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
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