From: "Jonathan Vardy" <jonathan@explainerdc.com>
To: "Ezra Nugroho" <ezran@goshen.edu>
Cc: "Peter L. Ashford" <ashford@sdsc.edu>,
"Jonathan Vardy" <jonathanv@explainerdc.com>,
"Stephan van Hienen" <raid@a2000.nu>,
<linux-raid@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: RE: RAID 5 performance problems
Date: Fri, 4 Apr 2003 17:05:56 +0200 [thread overview]
Message-ID: <73300040777B0F44B8CE29C87A0782E101FA98E7@exchange.explainerdc.com> (raw)
> From: Ezra Nugroho [mailto:ezran@goshen.edu]
> Your hdc is still running at udma(33). This is also part of the raid,
> right? This will slow the whole thing down since in raid 5
> write is done
> to all disks simultaneously. Before the system finishes writing to the
> slow drive, the write is not done yet.
> Your hdc is still running at udma(33). This is also part of the raid,
> right? This will slow the whole thing down since in raid 5
> write is done
> to all disks simultaneously. Before the system finishes writing to the
> slow drive, the write is not done yet.
This should not cripple the performance to what I get. My friend had
6x80GB 5400rpm drives with two of those on udma33 and four on udma66 and
he managed 80MB/sec (dual 500Mhz)
Jonathan
next reply other threads:[~2003-04-04 15:00 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-04 15:05 Jonathan Vardy [this message]
-- strict thread matches above, loose matches on Subject: below --
2003-04-04 16:01 Jonathan Vardy
2003-04-05 0:10 ` Jonathan Vardy
2003-04-04 11:44 Jonathan Vardy
2003-04-04 14:39 ` Ezra Nugroho
2003-04-03 20:10 Chuck Ebbert
2003-04-03 19:49 Andy Arvai
2003-04-03 20:25 ` Mike Dresser
2003-04-03 21:10 ` Jonathan Vardy
2003-04-03 21:31 ` Ezra Nugroho
2003-04-03 19:13 Neil Schemenauer
2003-04-03 15:45 Jonathan Vardy
2003-04-03 18:05 ` Peter L. Ashford
2003-04-03 18:47 ` Ross Vandegrift
2003-04-03 19:22 ` Stephan van Hienen
2003-04-03 19:20 ` Stephan van Hienen
2003-04-03 19:28 ` Alan Cox
2003-04-03 21:02 ` Ezra Nugroho
2003-04-03 21:25 ` Stephan van Hienen
2003-04-03 21:38 ` Peter L. Ashford
2003-04-03 22:09 ` Jonathan Vardy
2003-04-03 22:16 ` Jonathan Vardy
2003-04-03 22:28 ` Peter L. Ashford
2003-04-03 21:42 ` Jonathan Vardy
2003-04-03 22:13 ` Peter L. Ashford
2003-04-04 20:39 ` H. Peter Anvin
2003-04-03 21:06 ` Felipe Alfaro Solana
2003-04-03 21:14 ` Jonathan Vardy
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