Re: [Xen-devel] blkif shared ring

[Samvel Yuri <samvelox@xxxxxxxxx>]

hi Samuel-

Would you please explain what do you mean by "using the whole buffer page"?

Parallax (project of University of British Columbia) modified XEN by allocating an
additional shared ring page in the blkback driver. Probably one of options?

thanks,
~Sam

---

From: Samuel Thibault <samuel.thibault@xxxxxxxxxxxx>
To: Samvel Yuri <samvelox@xxxxxxxxx>
Cc: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
Sent: Tuesday, November 18, 2008 3:39:43 PM
Subject: Re: [Xen-devel] blkif shared ring

Hello,

Samvel Yuri, le Tue 18 Nov 2008 15:29:48 -0800, a écrit :
> Wouldn't the shared ring be likely a bottleneck in very large number
> os IOs, have anybody ran into such issue?

Compared to disk speeds, it is almost a bottleneck nowadays. In mini-os,
I could achieve almost native performance, but that was by using the
whole buffer page. When disk will get faster, one page won't be enough.

Samuel

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel