On 2011-12-19 19:27, Vivek Goyal wrote:
I think reverting the previous series is not going to be simple either. It
had 13 patches.
https://lkml.org/lkml/2011/5/19/560
By making stats per cpu, I was able to reduce contention on request
queue lock. Now we shall have to bring the lock back.
On Mon, Dec 19, 2011 at 02:56:35PM -0800, Tejun Heo wrote:
Hello, Vivek.
On Mon, Dec 19, 2011 at 01:27:17PM -0500, Vivek Goyal wrote:
Ok, that's good to know. If per cpu allocator can support this use case,
it will be good for 3.3 onwards. This seems to be right way to go to fix
the
Hello,
On Tue, Dec 20, 2011 at 09:50:24AM -0500, Vivek Goyal wrote:
So IIUC, existing mempool implementation is not directly usable for my
requirement and I need to write some code of my own for the caching
layer which always allocates objects from reserve and fills in the
pool asynchronously
On Sun, Dec 18, 2011 at 03:25:48PM -0600, Nate Custer wrote:
On Dec 16, 2011, at 2:29 PM, Vivek Goyal wrote:
Thanks for testing it Nate. I did some debugging and found out that patch
is doing double free on per cpu pointer hence the crash you are running
into. I could reproduce this
On Sun, Dec 18, 2011 at 03:25:48PM -0600, Nate Custer wrote:
On Dec 16, 2011, at 2:29 PM, Vivek Goyal wrote:
Thanks for testing it Nate. I did some debugging and found out that patch
is doing double free on per cpu pointer hence the crash you are running
into. I could reproduce this
On Mon, Dec 19, 2011 at 12:27:17PM -0500, Vivek Goyal wrote:
On Sun, Dec 18, 2011 at 03:25:48PM -0600, Nate Custer wrote:
On Dec 16, 2011, at 2:29 PM, Vivek Goyal wrote:
Thanks for testing it Nate. I did some debugging and found out that patch
is doing double free on per cpu pointer
On Mon, Dec 19, 2011 at 09:35:19AM -0800, Tejun Heo wrote:
On Mon, Dec 19, 2011 at 12:27:17PM -0500, Vivek Goyal wrote:
On Sun, Dec 18, 2011 at 03:25:48PM -0600, Nate Custer wrote:
On Dec 16, 2011, at 2:29 PM, Vivek Goyal wrote:
Thanks for testing it Nate. I did some debugging and
Hello, Vivek.
On Mon, Dec 19, 2011 at 01:27:17PM -0500, Vivek Goyal wrote:
Ok, that's good to know. If per cpu allocator can support this use case,
it will be good for 3.3 onwards. This seems to be right way to go to fix
the problem.
Ummm... if we're gonna make percpu usable w/ GFP_NOIO, the
On Dec 16, 2011, at 2:29 PM, Vivek Goyal wrote:
Thanks for testing it Nate. I did some debugging and found out that patch
is doing double free on per cpu pointer hence the crash you are running
into. I could reproduce this problem on my box. It is just a matter of
doing rmdir on the blkio
On Dec 15, 2011, at 1:47 PM, Vivek Goyal wrote:
Ok, I continued to develop on the patch which tries to allocate per cpu
stats from worker thread context. Here is the patch.
Can the reporter please try out the patch and see if it helps. I am not
sure if deadlock was because of mutex issue or
On Fri, Dec 16, 2011 at 12:43:52PM -0600, Nate Custer wrote:
On Dec 15, 2011, at 1:47 PM, Vivek Goyal wrote:
Ok, I continued to develop on the patch which tries to allocate per cpu
stats from worker thread context. Here is the patch.
Can the reporter please try out the patch and see if
On Wed, Dec 14, 2011 at 05:03:54PM +0100, Jens Axboe wrote:
On 2011-12-14 14:43, Avi Kivity wrote:
On 12/14/2011 02:25 PM, Marcelo Tosatti wrote:
On Mon, Dec 05, 2011 at 04:48:16PM -0600, Nate Custer wrote:
Hello,
I am struggling with repeatable full hardware locks when running 8-12 KVM
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