Very inconsistent (read) speed on UFS2

Lev Serebryakov lev at FreeBSD.org
Tue Aug 30 22:31:59 UTC 2011


Hello, Kirk.
You wrote 31 августа 2011 г., 0:09:12:

> memory faster than the cleanup thread can produce it. The result is
> that your read idles (e.g., appears to run slowly). It is random because
> it depends on when you run out of memory.
   BTW, it could explain why some runs are slower than other. But my
 situation looks like opposite: some runs much faster than others. And
 it could not be read-from-cache if VM is sane. It is hard to belive,
 that VM will store 0.5GiB of read-once data when another 5GiB was
 read after that only in 2GiB of physical memory

-- 
// Black Lion AKA Lev Serebryakov <lev at FreeBSD.org>



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