>>> On 16.03.17 at 09:13, wrote:
> On Wed, Mar 15, Jan Beulich wrote:
>
>> ..., and iirc PV migration didn't have any issue with TSC freq
>> changing during migration prior to the introduction of vTSC.
>
> When was this introduced? There is a claim that this slowdown is a
> regression.
Many, ma
On Wed, Mar 15, Jan Beulich wrote:
> ..., and iirc PV migration didn't have any issue with TSC freq
> changing during migration prior to the introduction of vTSC.
When was this introduced? There is a claim that this slowdown is a
regression.
Olaf
signature.asc
Description: PGP signature
__
>>> On 15.03.17 at 17:41, wrote:
> On 03/15/2017 12:02 PM, Jan Beulich wrote:
> On 15.03.17 at 16:26, wrote:
>>> On 15/03/17 15:23, Olaf Hering wrote:
On Wed, Mar 15, Olaf Hering wrote:
> On Wed, Mar 15, Andrew Cooper wrote:
>> As a crazy idea, doest this help?
>> tsc->i
On 03/15/2017 12:02 PM, Jan Beulich wrote:
On 15.03.17 at 16:26, wrote:
>> On 15/03/17 15:23, Olaf Hering wrote:
>>> On Wed, Mar 15, Olaf Hering wrote:
>>>
On Wed, Mar 15, Andrew Cooper wrote:
> As a crazy idea, doest this help?
> tsc->incarnation = 0
>>> This does indeed help. O
>>> On 15.03.17 at 16:53, wrote:
> On 15/03/17 16:43, Boris Ostrovsky wrote:
>> On 03/15/2017 11:26 AM, Andrew Cooper wrote:
>>> On 15/03/17 15:23, Olaf Hering wrote:
On Wed, Mar 15, Olaf Hering wrote:
> On Wed, Mar 15, Andrew Cooper wrote:
>> As a crazy idea, doest this help?
>>
>>> On 15.03.17 at 16:26, wrote:
> On 15/03/17 15:23, Olaf Hering wrote:
>> On Wed, Mar 15, Olaf Hering wrote:
>>
>>> On Wed, Mar 15, Andrew Cooper wrote:
As a crazy idea, doest this help?
tsc->incarnation = 0
>> This does indeed help. One system shows now the results below, which
>> mea
On Wed, Mar 15, 2017 at 09:53:02AM -0600, Jan Beulich wrote:
> >>> On 15.03.17 at 16:43, wrote:
...
> > We have seen something similar being caused by the superpage
> > attribute getting dropped when the domU was migrated. The new
> > copy of the domU only has 4K pages instead of 2MB pages eventua
On 15/03/17 16:43, Boris Ostrovsky wrote:
> On 03/15/2017 11:26 AM, Andrew Cooper wrote:
>> On 15/03/17 15:23, Olaf Hering wrote:
>>> On Wed, Mar 15, Olaf Hering wrote:
>>>
On Wed, Mar 15, Andrew Cooper wrote:
> As a crazy idea, doest this help?
> tsc->incarnation = 0
>>> This does ind
>>> On 15.03.17 at 16:43, wrote:
> On Wed, Mar 15, 2017 at 12:20:44PM +0100, Olaf Hering wrote:
>> After reports about degraded performance after a PV domU was migrated
>> from one dom0 to another it turned out that this issue happens with
>> every version of Xen and every version of domU kernel.
On 15/03/17 15:43, Alan Robinson wrote:
> Hi Olaf,
>
> On Wed, Mar 15, 2017 at 12:20:44PM +0100, Olaf Hering wrote:
>> After reports about degraded performance after a PV domU was migrated
>> from one dom0 to another it turned out that this issue happens with
>> every version of Xen and every versi
Hi Olaf,
On Wed, Mar 15, 2017 at 12:20:44PM +0100, Olaf Hering wrote:
> After reports about degraded performance after a PV domU was migrated
> from one dom0 to another it turned out that this issue happens with
> every version of Xen and every version of domU kernel.
>
> The used benchmark is 's
On 03/15/2017 11:26 AM, Andrew Cooper wrote:
> On 15/03/17 15:23, Olaf Hering wrote:
>> On Wed, Mar 15, Olaf Hering wrote:
>>
>>> On Wed, Mar 15, Andrew Cooper wrote:
As a crazy idea, doest this help?
tsc->incarnation = 0
>> This does indeed help. One system shows now the results below, w
On 15/03/17 16:26, Andrew Cooper wrote:
> On 15/03/17 15:23, Olaf Hering wrote:
>> On Wed, Mar 15, Olaf Hering wrote:
>>
>>> On Wed, Mar 15, Andrew Cooper wrote:
As a crazy idea, doest this help?
tsc->incarnation = 0
>> This does indeed help. One system shows now the results below, which
On 15/03/17 15:23, Olaf Hering wrote:
> On Wed, Mar 15, Olaf Hering wrote:
>
>> On Wed, Mar 15, Andrew Cooper wrote:
>>> As a crazy idea, doest this help?
>>> tsc->incarnation = 0
> This does indeed help. One system shows now the results below, which
> means the performance goes down during migrati
On Wed, Mar 15, Olaf Hering wrote:
> On Wed, Mar 15, Andrew Cooper wrote:
> > As a crazy idea, doest this help?
> > tsc->incarnation = 0
This does indeed help. One system shows now the results below, which
means the performance goes down during migration (to localhost) and goes
back to normal aft
On Wed, Mar 15, Andrew Cooper wrote:
> As a crazy idea, doest this help?
> tsc->incarnation = 0
Had to move to another testhost and this seems to help. Will do more testing
once the original testsystems are accessible again. Thanks!
Olaf
signature.asc
Description: PGP signature
__
On 15/03/17 11:20, Olaf Hering wrote:
> After reports about degraded performance after a PV domU was migrated
> from one dom0 to another it turned out that this issue happens with
> every version of Xen and every version of domU kernel.
>
> The used benchmark is 'sysbench memory'. I hacked it up to
17 matches
Mail list logo
