Re: [Qemu-devel] [RFC]QEMU disk I/O limits

[Zhi Yong Wu]

On Tue, May 31, 2011 at 03:55:49PM -0400, Vivek Goyal wrote:
>Date: Tue, 31 May 2011 15:55:49 -0400
>From: Vivek Goyal <address@hidden>
>To: Zhi Yong Wu <address@hidden>
>Cc: address@hidden, address@hidden, address@hidden,
>       address@hidden, address@hidden,
>       address@hidden, address@hidden,
>       address@hidden, address@hidden, address@hidden,
>       address@hidden, address@hidden, address@hidden
>Subject: Re: [Qemu-devel] [RFC]QEMU disk I/O limits
>User-Agent: Mutt/1.5.21 (2010-09-15)
>
>On Mon, May 30, 2011 at 01:09:23PM +0800, Zhi Yong Wu wrote:
>
>[..]
>>     3.) How the users enable and play with it
>>     QEMU -drive option will be extended so that disk I/O limits can be 
>> specified on its command line, such as -drive [iops=xxx,][throughput=xxx] or 
>> -drive [iops_rd=xxx,][iops_wr=xxx,][throughput=xxx] etc. When this argument 
>> is specified, it means that "disk I/O limits" feature is enabled for this 
>> drive disk.
>
>How does throughput interface look like? is it bytes per second or something
>else?
Given your suggestion, its form will look like below:

-drive [iops=xxx][,bps=xxx] or -drive 
[iops_rd=xxx][,iops_wr=xxx][,bps_rd=xxx][,bps_wr=xxx]


Regards,

Zhiyong Wu
>
>Do we have read and write variants for throughput as we have for iops.
>
>if you have bytes interface(as kenrel does), then "bps_rd" and "bps_wr"
>might be good names too for thoughput interface.
>
>Thanks
>Vivek
>