Re: Trying to minimize the impact of checkpoints

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От jao@geophile.com
Тема Re: Trying to minimize the impact of checkpoints
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Msg-id 1086976948.40c9f3b40b1e0@geophile.com
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Ответы Re: Trying to minimize the impact of checkpoints  (Jan Wieck <JanWieck@Yahoo.com>)
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Quoting jao@geophile.com:

> When a checkpoint occurs, all operations slow way, way down.
> The attached spreadsheet (xls file, prepared in OO so unlikely
> to be dangerous) shows a run of a few hours, and the various spikes
> every 25-30 minutes seem consistent with checkpointing. The
> application is doing 1/2 reads and 1/2 inserts during this time.

Sorry for being cryptic in my message. The spreadsheet contains
iostat output.

Jack Orenstein

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