[Xapian-tickets] [Xapian] #671: Performance issues when querying over large number of local databases (shards)
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nobody at xapian.org
Thu Jun 4 18:38:24 BST 2015
#671: Performance issues when querying over large number of local databases
(shards)
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Reporter: wgreenberg | Owner: olly
Type: defect | Status: new
Priority: normal | Milestone:
Component: Matcher | Version:
Severity: normal | Resolution:
Keywords: sharding performance | Blocked By:
Blocking: | Operating System: Linux
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Comment (by wgreenberg):
FWIW, it's entirely possible that my observed speedup for the
record/docdata readaheads were due to experimental error. I didn't
test/analyze that case nearly as thoroughly as query performance.
I agree with your suggestion made elsewhere that any docdata preread
should occur w/ MSet::fetch(), and would be happy to try testing based on
that.
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Ticket URL: <http://trac.xapian.org/ticket/671#comment:14>
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