Re: Re: Strangeness in xid allocation / snapshot setup

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: "Mikheev, Vadim" <vmikheev(at)SECTORBASE(dot)COM>
Cc: pgsql-hackers(at)postgreSQL(dot)org
Subject: Re: Re: Strangeness in xid allocation / snapshot setup
Date: 2001-07-12 19:04:02
Message-ID: 11673.994964642@sss.pgh.pa.us
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"Mikheev, Vadim" <vmikheev(at)SECTORBASE(dot)COM> writes:
> Isn't spinlock just a few ASM instructions?... on most platforms...

If we change over to something that supports read vs write locking,
it's probably going to be rather more than that ... right now, I'm
pretty dissatisfied with the performance of our spinlocks under load.

regards, tom lane

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