Re: SATA Harddisk speed drop of 100 MB/s

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

To: Carlo Wood <[email protected]>, [email protected]
Subject: Re: SATA Harddisk speed drop of 100 MB/s
From: Jeff Garzik <[email protected]>
Date: Wed, 20 Jun 2007 19:06:06 -0400
In-reply-to: <[email protected]>
References: <[email protected]>
Sender: [email protected]
User-agent: Thunderbird 1.5.0.12 (X11/20070530)

Carlo Wood wrote:

hdparm -tT gives over 160 MB/s for my tripple 10k rpm Raptor RAID5
on 2.6.18, as expected.

In 2.6.22-rc5 this dropped to only 60 MB/s !

Is this a known issue?

I also measured it with bonnie; I get 108 MB/s reading speed on
2.6.18 and only 68 MB/s on 2.6.22-rc5.

More info needed... kernel config, before-and-after dmesg output, lspcioutput.


	Jeff



-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Follow-Ups:
- Re: SATA RAID5 speed drop of 100 MB/s
  - From: Carlo Wood <[email protected]>
- Re: SATA RAID5 speed drop of 100 MB/s
  - From: Carlo Wood <[email protected]>
- Re: SATA Harddisk speed drop of 100 MB/s
  - From: Arjan van de Ven <[email protected]>

References:
- SATA Harddisk speed drop of 100 MB/s
  - From: Carlo Wood <[email protected]>

Prev by Date: Re: Adding subroot information to /proc/mounts, or obtaining that through other means
Next by Date: Re: [1/2] 2.6.22-rc5: known regressions with patches
Previous by thread: SATA Harddisk speed drop of 100 MB/s
Next by thread: Re: SATA Harddisk speed drop of 100 MB/s
Index(es):
- Date
- Thread

[Index of Archives] [Kernel Newbies] [Netfilter] [Bugtraq] [Photo] [Stuff] [Gimp] [Yosemite News] [MIPS Linux] [ARM Linux] [Linux Security] [Linux RAID] [Video 4 Linux] [Linux for the blind] [Linux Resources]

Powered by Linux