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ChUIMonster
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Re: -Bp "stealing" buffers... I think you are thinking about it backwards -- if a block is already in -B then it will not count against -Bp. If a block referenced by a process using -Bp is NOT in -Bp then rather than replace a "public" buffer with that block one of the -Bp buffers will be used. Thus "public" buffers do not get flushed by processes doing sequential and non-repeating access (like backups). So, no, -Bp is not a sneaky way to flush -B. It is quite the opposite. A way to *avoid* flushing -Bp.
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