Hi,
I created a MD-RAID5 array using 8 Maxtor SAS Disk Drives (chunk size is
256k). I have measured the data transfer speed for single SAS disk drive
(physical drive, not filesystem on it), it is roughly about 80~90MB/s.
However, I notice MD also reports the speed for the RAID5 array when it
Could you please give me more details about this? What do you mean the fast
end and slow end part of disk? Do you mean the location in each disk
platter?
Thanks,
Liang
- Original Message -
From: Justin Piszcz [EMAIL PROTECTED]
To: Liang Yang [EMAIL PROTECTED]
Cc: linux-raid
Do we need to consider the chunk size when we adjust the value of
Striped_Cache_Szie for the MD-RAID5 array?
Liang
- Original Message -
From: Justin Piszcz [EMAIL PROTECTED]
To: kyle [EMAIL PROTECTED]
Cc: linux-raid@vger.kernel.org; linux-kernel@vger.kernel.org
Sent: Monday, January
Hello,
I have tried to increase the Striped_Cache_Size from 256 (default for my
MD-RAID5 array) to 8192, it does improve the MD-RAID5 Write performance
which varies with the size of I/O packet.
However, I'm still not very clean the meaning and the potential performance
impact of this
] [mailto:[EMAIL PROTECTED] On Behalf
Of Dan Williams
Sent: Sunday, January 21, 2007 11:07 PM
To: Liang Yang
Cc: linux-raid@vger.kernel.org
Subject: Re: What is the exacting meaning of Striped_Cache_Size?
On 1/21/07, Liang Yang [EMAIL PROTECTED] wrote:
Hello,
I have tried to increase
