From: Richard Kennedy <richard@rsk.demon.co.uk>
To: Jens Axboe <jens.axboe@oracle.com>
Cc: fio@vger.kernel.org
Subject: Re: unexpected results from simple test?
Date: Mon, 22 Jun 2009 15:20:46 +0100 [thread overview]
Message-ID: <1245680446.2704.61.camel@localhost.localdomain> (raw)
In-Reply-To: <20090622105104.GC31415@kernel.dk>
> In any case, please try and download a new fresh version and see if that
> makes it any better.
>
> There was also a recent linux kernel futex problem that fio triggered,
> so it could also be a kernel issue. Again, knowing what the two other
> jobs are doing would help.
>
Hi Jens,
'strace -f' running on a freshly built fio 1.28
It runs somewhat slowly but I just get lots of reads & writes like these
[pid 6597] gettimeofday({1245679454, 899777}, NULL) = 0
[pid 6597] lseek(8, 419278848, SEEK_SET) = 419278848
[pid 6597] gettimeofday({1245679454, 899917}, NULL) = 0
[pid 6597] gettimeofday({1245679454, 899988}, NULL) = 0
[pid 6597] gettimeofday({1245679454, 900059}, NULL) = 0
[pid 6597] write(8, "+\265bB\305\243g+\214\313\313\377\20H\237\356\266
\326X\335<\37\317K\207\317,/\335J\206\267\33"..., 4096) = 4096
[pid 6597] gettimeofday({1245679454, 900244}, NULL) = 0
[pid 6597] lseek(8, 419282944, SEEK_SET) = 419282944
[pid 6597] gettimeofday({1245679454, 900391}, NULL) = 0
[pid 6597] gettimeofday({1245679454, 900463}, NULL) = 0
[pid 6597] gettimeofday({1245679454, 900534}, NULL) = 0
[pid 6597] read(8, "+\265bB\305\243g+\214\313\313\377\20H\237\356\266
\326X\335<\37\317K\207\317,/\335J\206\267\33"..., 4096) = 4096
[pid 6597] gettimeofday({1245679454, 900705}, NULL) = 0
[pid 6597] lseek(8, 419287040, SEEK_SET) = 419287040
[pid 6597] gettimeofday({1245679454, 900845}, NULL) = 0
[pid 6597] gettimeofday({1245679454, 900914}, NULL) = 0
[pid 6597] gettimeofday({1245679454, 900985}, NULL) = 0
[pid 6597] write(8, "+\265bB\305\243g+\214\313\313\377\20H\237\356\266
\326X\335<\37\317K\207\317,/\335J\206\267\33"..., 4096) = 4096
[pid 6597] gettimeofday({1245679454, 901171}, NULL) = 0
[pid 6597] lseek(8, 419291136, SEEK_SET) = 419291136
[pid 6597] gettimeofday({1245679454, 901309}, NULL) = 0
[pid 6597] gettimeofday({1245679454, 901379}, NULL) = 0
[pid 6597] gettimeofday({1245679454, 901460}, NULL) = 0
[pid 6597] read(8, "+\265bB\305\243g+\214\313\313\377\20H\237\356\266
\326X\335<\37\317K\207\317,/\335J\206\267\33"..., 4096) = 4096
where pid 6597 is job f1
I'll rebuild my kernel from the latest git, and check that.
regards
Richard
next prev parent reply other threads:[~2009-06-22 14:20 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-22 10:41 unexpected results from simple test? Richard Kennedy
2009-06-22 10:40 ` Gurudas Pai
2009-06-22 10:53 ` Jens Axboe
2009-06-22 10:51 ` Jens Axboe
2009-06-22 11:16 ` Richard Kennedy
2009-06-22 14:20 ` Richard Kennedy [this message]
2009-06-22 17:57 ` Jens Axboe
2009-06-23 10:02 ` Richard Kennedy
2009-06-23 10:54 ` Jens Axboe
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