From: Roger Larsson <roger.larsson@norran.net>
To: linux-mm@kvack.org
Subject: mmap002 execution time doubled... good or bad sign?
Date: Sat, 10 Feb 2001 23:23:19 +0100 [thread overview]
Message-ID: <01021023231906.02374@dox> (raw)
Hi,
I have been running various stress tests on disk for some time.
streaming write, copy, read, diff, dbench and mmap002
This is what I have seen:
>From 2.4.0 to 2.4.1 with Marcelos patch write were above 10 MB/s
and read >13 MB/s, dbench > 10 MB/s, mmap took around 2m30.
After 2.4.1-pre8 (did not test anything in between)
Write is at 9-10 [lost 1 MB/s] read is down to 11-12 MB/s [lost 2 MB/s]
dbench > 9 MB/s [one MB/s there too]
But the really strange one - mmap002 now takes > 4m30
Is this expected / good behaviour? mmap002 abuses mmaps...
/RogerL
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next reply other threads:[~2001-02-10 22:30 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-02-10 22:23 Roger Larsson [this message]
2001-02-11 2:05 ` mmap002 execution time doubled... good or bad sign? Marcelo Tosatti
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