* [Qemu-devel] livelock in iolimits
@ 2013-01-08 15:43 Peter Lieven
2013-01-10 12:45 ` Stefan Hajnoczi
0 siblings, 1 reply; 3+ messages in thread
From: Peter Lieven @ 2013-01-08 15:43 UTC (permalink / raw)
To: qemu-devel@nongnu.org
Hi,
i am experimenting with iolimits on a virtio block device and found a lock condition.
My plan was to monitor IOPS and/or bandwidth and kick a limit in if a vServer is exhausting
these limits too much.
However, it seems that if a limit is defined while the defined limit is exceeded no further I/O
is processed.
Maybe this is sth similar like
stream: fix ratelimiting corner case
Any ideas?
Thanks,
Peter
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Qemu-devel] livelock in iolimits
2013-01-08 15:43 [Qemu-devel] livelock in iolimits Peter Lieven
@ 2013-01-10 12:45 ` Stefan Hajnoczi
2013-01-10 12:48 ` Peter Lieven
0 siblings, 1 reply; 3+ messages in thread
From: Stefan Hajnoczi @ 2013-01-10 12:45 UTC (permalink / raw)
To: Peter Lieven; +Cc: qemu-devel@nongnu.org
On Tue, Jan 08, 2013 at 04:43:22PM +0100, Peter Lieven wrote:
> i am experimenting with iolimits on a virtio block device and found a lock condition.
> My plan was to monitor IOPS and/or bandwidth and kick a limit in if a vServer is exhausting
> these limits too much.
> However, it seems that if a limit is defined while the defined limit is exceeded no further I/O
> is processed.
You have sent a fix for this?
Just double-checking that this email thread can be ignored in favor of
your patch.
Stefan
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Qemu-devel] livelock in iolimits
2013-01-10 12:45 ` Stefan Hajnoczi
@ 2013-01-10 12:48 ` Peter Lieven
0 siblings, 0 replies; 3+ messages in thread
From: Peter Lieven @ 2013-01-10 12:48 UTC (permalink / raw)
To: Stefan Hajnoczi; +Cc: qemu-devel@nongnu.org
Am 10.01.2013 um 13:45 schrieb Stefan Hajnoczi <stefanha@gmail.com>:
> On Tue, Jan 08, 2013 at 04:43:22PM +0100, Peter Lieven wrote:
>> i am experimenting with iolimits on a virtio block device and found a lock condition.
>> My plan was to monitor IOPS and/or bandwidth and kick a limit in if a vServer is exhausting
>> these limits too much.
>> However, it seems that if a limit is defined while the defined limit is exceeded no further I/O
>> is processed.
>
> You have sent a fix for this?
>
I sent a fix, but Paolo suggested a different way to fix it. I am just testing it.
Peter
> Just double-checking that this email thread can be ignored in favor of
> your patch.
>
> Stefan
^ permalink raw reply [flat|nested] 3+ messages in thread
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2013-01-08 15:43 [Qemu-devel] livelock in iolimits Peter Lieven
2013-01-10 12:45 ` Stefan Hajnoczi
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