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From: "Liang Yang" <multisyncfe991@hotmail.com>
To: linux-raid@vger.kernel.org
Subject: What is the exacting meaning of Striped_Cache_Size?
Date: Sun, 21 Jan 2007 22:38:01 -0700	[thread overview]
Message-ID: <BAY125-DAV159818650D5FE72FE853E393AE0@phx.gbl> (raw)
Message-ID: <000301c73de7$7b0ce1d0$0401a8c0@bellevue> (raw)
In-Reply-To: <Pine.LNX.4.64.0701200745420.3756@p34.internal.lan>

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 Striped_Cache_Size? Is the unit for this parameter Byte or
KiloByte?

Could anyone here explain with a little bit more details?

Thanks,

Liang



  reply	other threads:[~2007-01-22  5:38 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-01-20 12:23 Kernel 2.6.19.2 New RAID 5 Bug (oops when writing Samba -> RAID5) Justin Piszcz
2007-01-20 12:46 ` Justin Piszcz
     [not found]   ` <000301c73de7$7b0ce1d0$0401a8c0@bellevue>
2007-01-22  5:38     ` Liang Yang [this message]
2007-01-22  6:06       ` What is the exacting meaning of Striped_Cache_Size? Dan Williams
     [not found]         ` <000d01c73ded$ae7894f0$0401a8c0@bellevue>
2007-01-22  6:22           ` Liang Yang
2007-01-22 16:36             ` Dan Williams
2007-01-22 21:01 ` Kernel 2.6.19.2 New RAID 5 Bug (oops when writing Samba -> RAID5) Chuck Ebbert
2007-01-22 21:59   ` Neil Brown
2007-01-23  1:44     ` Dan Williams
2007-01-23  2:06       ` Neil Brown
2007-01-23 10:56     ` Justin Piszcz
2007-01-23 11:08       ` Michael Tokarev
2007-01-23 11:59         ` Justin Piszcz
2007-01-23 12:48           ` Michael Tokarev
2007-01-23 13:46             ` Justin Piszcz
2007-01-23 17:05           ` Bill Davidsen
2007-01-24 23:37   ` Justin Piszcz
2007-01-26  9:25     ` Andrew Morton
2007-01-26  9:37       ` Justin Piszcz
2007-01-26 12:31       ` Justin Piszcz

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