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From: Jonathan Tripathy <jonnyt-Nf8S+5hNwl710XsdtD+oqA@public.gmane.org>
To: "linux-bcache-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
	<linux-bcache-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Windows IOPS Benchmark
Date: Thu, 30 Aug 2012 01:09:10 +0100	[thread overview]
Message-ID: <503EAF26.6020009@abpni.co.uk> (raw)

Hi Everyone,

I'm using bcache with a RAID1 pair of SSDs (for the cache) with a 
MD-RAID10 spindle array for the backing device. On top of this is LVM. 
This setup is used with the Xen Hypervisor. Bcache is formatted with a 
sector size of 512 bytes.

If I use an LV for a Linux DomU, I get fantastic disk performance using 
fio (about 23k random write). However, when I use IOMeter in a Windows 
HVM DomU (with GPLPV drivers installed), my avg IOPS is around 4000. I 
am using the "default" Access Specification. Am I doing something wrong? 
Changing the number of workers doesn't seem to help.

Any advice is appreciated.

Thanks

             reply	other threads:[~2012-08-30  0:09 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-08-30  0:09 Jonathan Tripathy [this message]
     [not found] ` <503EAF26.6020009-Nf8S+5hNwl710XsdtD+oqA@public.gmane.org>
2012-08-30  0:13   ` Windows IOPS Benchmark Jonathan Tripathy
     [not found]     ` <503EB016.10603-Nf8S+5hNwl710XsdtD+oqA@public.gmane.org>
2012-08-30 12:48       ` David Rhodes Clymer

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