Re: Performance measurement

2020-04-02 Thread Stefano Garzarella
Hi, On Wed, Apr 01, 2020 at 11:33:26PM +0200, sterbl.ta--- via wrote: > Sorry I am not sure if this is the right place to ask but this is the only > mailing list that most relevant. Apologize if this is not, and please let me > know which place I should check. Thank you. > > My main question i

Re: QEMU participation to Google Season of Docs

2020-04-02 Thread Stefan Hajnoczi
On Wed, Apr 01, 2020 at 06:46:02PM +0200, Paolo Bonzini wrote: > On 01/04/20 18:37, Philippe Mathieu-Daudé wrote: > > > > * Refactor the open source project's existing documentation to > >   provide an improved user experience or a more accessible > >   information architecture. > > This kind of

Re: Performance measurement

2020-04-02 Thread sterbl . ta--- via
Dear Stefano, First thank you for providing the script. It's really useful! I executed the commands in prerequisite section before running the perf script, and its output as below $ cat  /sys/kernel/debug/tracing/events/kvm/enable 1 $ cat /proc/sys/kernel/perf_event_paranoid -1 $ ls -ld /sys/k

Re: Performance measurement

2020-04-02 Thread Stefano Garzarella
On Thu, Apr 02, 2020 at 11:33:42AM +0200, sterbl...@tutanota.com wrote: > Dear Stefano, > > First thank you for providing the script. It's really useful! You're welcome! I'm happy that it could be useful :-) > > I executed the commands in prerequisite section before running the perf > script,

qemu-x86: kernel panic when host is loaded

2020-04-02 Thread Corentin Labbe
Hello On our kernelci lab, each qemu worker pass an healtcheck job each day and after each job failure, so it is heavily used. The healtcheck job is a Linux boot with a stable release. Since we upgraded our worker to buster, the qemu x86_64 healthcheck randomly panic with: <6>[0.001000] API

Re: qemu-x86: kernel panic when host is loaded

2020-04-02 Thread Thomas Gleixner
Corentin, Corentin Labbe writes: > On our kernelci lab, each qemu worker pass an healtcheck job each day and > after each job failure, so it is heavily used. > The healtcheck job is a Linux boot with a stable release. > > Since we upgraded our worker to buster, the qemu x86_64 healthcheck random

Re: qemu-x86: kernel panic when host is loaded

2020-04-02 Thread Dongli Zhang
On 4/2/20 2:57 AM, Thomas Gleixner wrote: > Corentin, > > Corentin Labbe writes: >> On our kernelci lab, each qemu worker pass an healtcheck job each day and >> after each job failure, so it is heavily used. >> The healtcheck job is a Linux boot with a stable release. >> >> Since we upgraded

Re: qemu-x86: kernel panic when host is loaded

2020-04-02 Thread Thomas Gleixner
Dongli Zhang writes: > On 4/2/20 2:57 AM, Thomas Gleixner wrote: >> Corentin Labbe writes: >>> On our kernelci lab, each qemu worker pass an healtcheck job each day and >>> after each job failure, so it is heavily used. >>> The healtcheck job is a Linux boot with a stable release. >>> >>> Since

Re: Issues with -vnc on 5.0-rc0 with qemu-system-aarch64 -machine virt

2020-04-02 Thread Jesus Sanchez-Palencia
Hi Peter, On Tue, Mar 31, 2020 at 6:03 PM Jesus Sanchez-Palencia wrote: > Hi Peter, > > > On Tue, Mar 31, 2020 at 2:39 PM Peter Maydell > wrote: > >> (...) > > > >> Probably there is a mismatch between where the firmware >> is for you and where configure has told QEMU to look for it. >> (Though

Re: Performance measurement

2020-04-02 Thread sterbl . ta--- via
Placing "sleep 3" before qemu-system-x86_64 command as suggested fixes the problem. Thank you once again for your kindly help, most appreciate it! Apr 2, 2020, 09:57 by sgarz...@redhat.com: > On Thu, Apr 02, 2020 at 11:33:42AM +0200, sterbl...@tutanota.com wrote: > >> Dear Stefano, >> >> First t

QEMU doesn't recognize block device file

2020-04-02 Thread Aijaz . Baig
Hi I have a working QEMU image emulating an ARM vexpress-a9 and I run it like so: `sudo qemu-system-arm -m 512M -M vexpress-a9 -D qemu.log -d unimp -kernel buildroot-2019.02.5/output/images/zImage -dtb buildroot-2019.02.5/output/images/vexpress-v2p-ca9.dtb -append "console=ttyAMA0,115200 kgdbo

Re: QEMU doesn't recognize block device file

2020-04-02 Thread Pascal
may be adding media=disk to the drive definition : -drive if=none,format=raw,file=disk.img,media=disk otherwise, are you sure you packed the right stuff to detect the disc? Le ven. 3 avr. 2020 à 07:28, a écrit : > Hi > > I have a working QEMU image emulating an ARM vexpress-a9 and I run it like