Quoting jao(at)geophile(dot)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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