Am 16.02.2015 um 16:41 schrieb Stefan Priebe - Profihost AG:
Am 16.02.2015 um 15:49 schrieb Paolo Bonzini pbonz...@redhat.com:
On 16/02/2015 15:47, Stefan Priebe - Profihost AG wrote:
Could it be that this is a results of compiling qemu with --enable-debug
to get debugging symbols?
Yes.
On 16/02/2015 16:41, Stefan Priebe - Profihost AG wrote:
Yes, just do nothing (--enable-debug-info is the default;
--enable-debug enables debug info _and_ turns off optimization).
If I do not enable-debug dh_strip does not extract any debugging symbols.
Then you need --disable-strip too.
Am 16.02.2015 um 16:50 schrieb Andreas Färber:
Am 16.02.2015 um 16:41 schrieb Stefan Priebe - Profihost AG:
Am 16.02.2015 um 15:49 schrieb Paolo Bonzini pbonz...@redhat.com:
On 16/02/2015 15:47, Stefan Priebe - Profihost AG wrote:
Could it be that this is a results of compiling qemu with
Am 16.02.2015 um 16:49 schrieb Paolo Bonzini:
On 16/02/2015 16:41, Stefan Priebe - Profihost AG wrote:
Yes, just do nothing (--enable-debug-info is the default;
--enable-debug enables debug info _and_ turns off optimization).
If I do not enable-debug dh_strip does not extract any debugging
On 15/02/2015 19:46, Stefan Priebe wrote:
while i get a constant random 4k i/o write speed of 20.000 iops with
qemu 2.1.0 or 2.1.3. I get jumping speeds with qemu 2.2 (jumping between
500 iops and 15.000 iop/s).
If i use virtio instead of virtio-scsi speed is the same between 2.2 and
Hi,
Am 16.02.2015 um 13:24 schrieb Paolo Bonzini:
On 15/02/2015 19:46, Stefan Priebe wrote:
while i get a constant random 4k i/o write speed of 20.000 iops with
qemu 2.1.0 or 2.1.3. I get jumping speeds with qemu 2.2 (jumping between
500 iops and 15.000 iop/s).
If i use virtio instead
On 16/02/2015 15:43, Stefan Priebe - Profihost AG wrote:
Hi,
Am 16.02.2015 um 13:24 schrieb Paolo Bonzini:
On 15/02/2015 19:46, Stefan Priebe wrote:
while i get a constant random 4k i/o write speed of 20.000 iops with
qemu 2.1.0 or 2.1.3. I get jumping speeds with qemu 2.2 (jumping
On Mon, Feb 16, 2015 at 5:47 PM, Stefan Priebe - Profihost AG
s.pri...@profihost.ag wrote:
Hi,
Am 16.02.2015 um 15:44 schrieb Paolo Bonzini:
On 16/02/2015 15:43, Stefan Priebe - Profihost AG wrote:
Hi,
Am 16.02.2015 um 13:24 schrieb Paolo Bonzini:
On 15/02/2015 19:46, Stefan Priebe
Hi,
Am 16.02.2015 um 15:44 schrieb Paolo Bonzini:
On 16/02/2015 15:43, Stefan Priebe - Profihost AG wrote:
Hi,
Am 16.02.2015 um 13:24 schrieb Paolo Bonzini:
On 15/02/2015 19:46, Stefan Priebe wrote:
while i get a constant random 4k i/o write speed of 20.000 iops with
qemu 2.1.0 or
On 16/02/2015 15:47, Stefan Priebe - Profihost AG wrote:
Could it be that this is a results of compiling qemu with --enable-debug
to get debugging symbols?
Yes.
*urg* my fault - sorry. Is there a way to get debugging symbols without
using enable-debug / getting slower performance?
Hi,
Am 16.02.2015 um 15:58 schrieb Andrey Korolyov and...@xdel.ru:
On Mon, Feb 16, 2015 at 5:47 PM, Stefan Priebe - Profihost AG
s.pri...@profihost.ag wrote:
Hi,
Am 16.02.2015 um 15:44 schrieb Paolo Bonzini:
On 16/02/2015 15:43, Stefan Priebe - Profihost AG wrote:
Hi,
Am
Am 16.02.2015 um 15:49 schrieb Paolo Bonzini pbonz...@redhat.com:
On 16/02/2015 15:47, Stefan Priebe - Profihost AG wrote:
Could it be that this is a results of compiling qemu with --enable-debug
to get debugging symbols?
Yes.
*urg* my fault - sorry. Is there a way to get
H Stefan,
only for write ? or also read ?
I'll try to reproduce on my test cluster.
- Mail original -
De: Stefan Priebe s.pri...@profihost.ag
À: qemu-devel qemu-devel@nongnu.org
Envoyé: Dimanche 15 Février 2015 19:46:12
Objet: [Qemu-devel] slow speed for virtio-scsi since qemu 2.2
Hi
Hi,
while i get a constant random 4k i/o write speed of 20.000 iops with
qemu 2.1.0 or 2.1.3. I get jumping speeds with qemu 2.2 (jumping between
500 iops and 15.000 iop/s).
If i use virtio instead of virtio-scsi speed is the same between 2.2 and
2.1.
Is there a known regression?
Greets,
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