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kashani wrote: |
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> Chris Bainbridge wrote: |
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>> I'm curious what the problem is with bugzilla and it's db |
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>> interactions? You're suggesting a specific issue rather than general |
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>> db performance issues like fs, io scheduling, raid1, hyperthreads, |
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>> etc.? |
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> |
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> It's most likely related to Bugzilla using MyISAM tables by default |
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> which is fine in a small environment. However as concurrency grows along |
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> with table size those full table locks begin to cause issues. |
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> Additionally most www-apps are not known for their well thought out db |
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> schema. Performance of the underlying hardware plays a part, but can be |
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> overshadowed pretty quickly by query and table inefficiencies. |
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> |
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> The usual fix without touching the internals of the software is |
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> doing master/slave replication and allowing the selects to happen on the |
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> slave and writes on the master. However you would need to change most of |
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> the queries to point to the slave server which is usually not trivial. |
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> It sounds like this is the path the Infra team is pursuing. |
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1++ |
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You got it right :-) |
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-- |
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Lance Albertson <ramereth@g.o> |
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Gentoo Infrastructure | Operations Manager |
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--- |
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GPG Public Key: <http://www.ramereth.net/lance.asc> |
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Key fingerprint: 0423 92F3 544A 1282 5AB1 4D07 416F A15D 27F4 B742 |
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ramereth/irc.freenode.net |
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