Date: Mon, 04 Oct 2004 00:37:40 +0200 From: Willem Jan Withagen <wjw@withagen.nl> To: "freebsd-ports@freebsd.org" <freebsd-ports@freebsd.org> Subject: runtime errors with iozone21 Message-ID: <41607F34.60900@withagen.nl>
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Hi,
by accident I installed iozone21, but that version is seriously sick
when running on 5.x and up systems. Both i386 and amd64:
------
[~] root@opteron> iozone21 auto
IOZONE: Performance Test of Sequential File I/O -- V2.01
(10/21/94)
By Bill Norcott
Operating System: FreeBSD 2.x -- using fsync()
IOZONE: auto-test mode
MB reclen bytes/sec written bytes/sec read
1 512 22369621 44739242
1 1024 33554432 134217728
1 2048 67108864 134217728
I/O error during read. Try again with the command:
iozone 1 2048 (i.e. record size = 2048 bytes)
I/O error during read. Try again with the command:
iozone 1 4096 (i.e. record size = 4096 bytes)
-----
Maintainer is 'ports@FreeBSD.org', which means more or less that nobody
feels responsable for it. I've looked under the hood, but at first sight
it seem because the timing functions cannot keep upt with the fast
return of the read call and time seems to be zero.
Now this requires a serious overhaul of iozone21 to get a more accurate
timing.
Would it not be better to just retire this port??
Especially zince there is a better version of iozone!
--WjW
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