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POSTGRESQL BUG REPORT TEMPLATE
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Your name : Doug Mitchell
Your email address : doug@mitchcraft.com
Category : runtime: back-end
Severity : non-critical
Summary: Backend lseeks needlessly
System Configuration
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Operating System : RedHat Linux 6.1
PostgreSQL version : 6.5.2
Compiler used : egcs-2.91.66
Hardware:
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i686-pc-linux-gnu
Versions of other tools:
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Problem Description:
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Had the backend processs simple one-record select
and update queries using index scans and watched
it with strace.
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Test Case:
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Attach to running backend with
strace -p pid
and watch all the lseeks
strace -c -p pid
and count lseeks vs reads and writes
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Solution:
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Probably could be handled in the storage manager,
so at least a slow system call is prevented, but
is should be fixed in the upper layers too.
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