On 30/08/2012 01:09, Jonathan Tripathy wrote:
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
Actually nvm, I forgot to enable the dist target for each of the works.
Now I'm getting an avg iops of about 34k.
But this does leave me with a question: is the number of "workers" in
IOMeter akin to "IO Depth" in fio?
Thanks
--
To unsubscribe from this list: send the line "unsubscribe linux-bcache" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
