Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags & 0x01)",)

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Jim C. Nasby
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Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags & 0x01)",)
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20051031174619.GG20349@pervasive.com
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Re: TRAP: FailedAssertion("!((itemid)->lp_flags & 0x01)", "Jim Nasby" <jnasby@pervasive.com>
slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags & 0x01)",) Tom Lane <tgl@sss.pgh.pa.us>
Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags & 0x01)",) "Jim C. Nasby" <jnasby@pervasive.com>
Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags & 0x01)",) Tom Lane <tgl@sss.pgh.pa.us>
Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags Bruce Momjian <pgman@candle.pha.pa.us>
Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags & 0x01)",) "Jim C. Nasby" <jnasby@pervasive.com>
Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags Bruce Momjian <pgman@candle.pha.pa.us>
Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags "Jim C. Nasby" <jnasby@pervasive.com>
Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags Bruce Momjian <pgman@candle.pha.pa.us>
Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags "Jim C. Nasby" <jnasby@pervasive.com>
Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags Gregory Maxwell <gmaxwell@gmail.com>
Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags Greg Stark <gsstark@mit.edu>
Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags Tom Lane <tgl@sss.pgh.pa.us>
Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags Greg Stark <gsstark@mit.edu>
Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags "Jim C. Nasby" <jnasby@pervasive.com>
Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags Tom Lane <tgl@sss.pgh.pa.us>
Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags "Jim C. Nasby" <jnasby@pervasive.com>
Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags Alvaro Herrera <alvherre@commandprompt.com>
Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags Tom Lane <tgl@sss.pgh.pa.us>
Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags "Jim C. Nasby" <jnasby@pervasive.com>
Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags Tom Lane <tgl@sss.pgh.pa.us>
Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags & 0x01)",) "Jim C. Nasby" <jnasby@pervasive.com>
Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags & 0x01)",) "Jim C. Nasby" <jnasby@pervasive.com>
Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags & 0x01)",) Alvaro Herrera <alvherre@alvh.no-ip.org>
Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags & 0x01)",) "Jim C. Nasby" <jnasby@pervasive.com>
Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags & 0x01)",) Tom Lane <tgl@sss.pgh.pa.us>
Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags & 0x01)",) Alvaro Herrera <alvherre@alvh.no-ip.org>
Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags & 0x01)",) "Jim C. Nasby" <jnasby@pervasive.com>
Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags & 0x01)",) Tom Lane <tgl@sss.pgh.pa.us>
Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags & 0x01)",) Tom Lane <tgl@sss.pgh.pa.us>
Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags & 0x01)",) "Jim C. Nasby" <jnasby@pervasive.com>
Re: slru.c race condition (was Re: TRAP: FailedAssertion("!((itemid)->lp_flags Bruce Momjian <pgman@candle.pha.pa.us>
Sorry, two more things...

Will increasing shared_buffers make this less likely to occur? Or is
this just something that's likely to happen when there are things like
seqscans that are putting buffers near the front of the LRU? (The 8.0.3
buffer manager does something like that, right?)

Is this something that a test case can be created for? I know someone
submitted a framework for doing concurrent testing...
-- 
Jim C. Nasby, Sr. Engineering Consultant      jnasby@pervasive.com
Pervasive Software      http://pervasive.com    work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf       cell: 512-569-9461

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