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From: Ishikawa [EMAIL PROTECTED]
Subject: Re: scsi vs ide performance on f
Hi!
"Jeremy" == Jeremy Hansen [EMAIL PROTECTED] writes:
Jeremy We're doing some mysql benchmarking. For some reason it seems that ide
Jeremy drives are currently beating a scsi raid array and it seems to be related
Jeremy to fsync's. Bonnie stats show the scsi array to blow away ide as
Hello,
Michael Widenius wrote on Monday, March 05, 2001:
I wonder from where the fdatasync() is comming; MySQL is not doing
those (if you are not running mysqld with --flush)
The call is either a fsync or an fdatasync that is done by Berkley DB on the
transaction log.
Regards,
Chris
Since the intention of fsync and fdatasync seems to be
to write dirty fs buffers to persistent storage (i.e.
the "oxide") then the best time is not necessarily
the objective. Given the IDE times that people have
been reporting, it is very unlikely that any of those
IDE disks were really doing
DE drives with the same behavior.
Michael D. Black Principal Engineer
[EMAIL PROTECTED] 321-676-2923,x203
http://www.csihq.com Computer Science Innovations
http://www.csihq.com/~mike My home page
FAX 321-676-2355
- Original Message -
From:
Douglas Gilbert wrote:
There is definitely something strange going on here.
As the bonnie test below shows, the SCSI disk used
for my tests should vastly outperform the old IDE one:
First thank you and others with my clueless investigation about
the module loading under Debian GNU/Linux. (I
___
Michael D. Black Principal Engineer
[EMAIL PROTECTED] 321-676-2923,x203
http://www.csihq.com Computer Science Innovations
http://www.csihq.com/~mike My home page
FAX 321-676-2355
- Original Message -
From: "Jeremy Hansen" [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
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