On Wed, 14 Sep 2022 15:08:27 -0500
Hector Gonzalez Jaime via Dng wrote:
> > Issueing root@bobby:~# cat /sys/block/vda/queue/scheduler gives:
> >
> > [mq-deadline] none
> >
> > Is it wrong?
>
> It's as it should be. Did you check this on the hypervisor? The use of
> vda suggests this was
On Wed, 14 Sep 2022 21:56:43 +0200, Luciano wrote in message
<4mswlm0ldwz1f...@baobab.bilink.it>:
> On Wed, 14 Sep 2022 21:16:27 +0200
> Arnt Karlsen wrote:
>
> > > echo "deadline" >/sys/block/sda/queue/scheduler
> > >
> >
> > ..a possibly simpler idea: Give the vm another cpu thread to
On 9/14/22 14:54, Luciano Mannucci wrote:
On Wed, 14 Sep 2022 12:37:41 -0500
Hector Gonzalez Jaime via Dng wrote:
kernel:[ 7336.007287] watchdog: BUG: soft lockup - CPU#0 stuck for 22s!
[swapper/0:0]
if I write to the disk via dd nothing wrong happens...
Luciano.
Check which
On Wed, 14 Sep 2022 21:16:27 +0200
Arnt Karlsen wrote:
> > echo "deadline" >/sys/block/sda/queue/scheduler
> >
>
> ..a possibly simpler idea: Give the vm another cpu thread to
> help do the i/o work?
It already has twelve cpu theads.
Is there a way to reserve some of them to I/O?
Luciano.
On Wed, 14 Sep 2022 12:37:41 -0500
Hector Gonzalez Jaime via Dng wrote:
> >kernel:[ 7336.007287] watchdog: BUG: soft lockup - CPU#0 stuck for 22s!
> > [swapper/0:0]
> >
> > if I write to the disk via dd nothing wrong happens...
> >
> > Luciano.
>
> Check which scheduler you are using,
On Wed, 14 Sep 2022 12:37:41 -0500, Hector wrote in message
<36d765d0-e9a7-ccaa-8b36-098e1f275...@genac.org>:
> On 9/14/22 10:02, Luciano Mannucci wrote:
> > On Wed, 14 Sep 2022 12:49:19 +0200
> > Luciano Mannucci wrote:
> >
> >>> vm.dirty_background_bytes=67108864
> >>>
On 9/14/22 10:02, Luciano Mannucci wrote:
On Wed, 14 Sep 2022 12:49:19 +0200
Luciano Mannucci wrote:
vm.dirty_background_bytes=67108864
vm.dirty_bytes=268435456
Maybe this additional information is helpful:
https://forum.proxmox.com/threads/io-performance-tuning.15893/
On Wed, 14 Sep 2022 12:49:19 +0200
Luciano Mannucci wrote:
> > vm.dirty_background_bytes=67108864
> > vm.dirty_bytes=268435456
> >
> > Maybe this additional information is helpful:
> >
> > https://forum.proxmox.com/threads/io-performance-tuning.15893/
> >
On Wed, 14 Sep 2022 11:04:39 +0200
Andreas Messer wrote:
> # Start background writing when more than 128MB data are in write cache
> # This value is tuned regarding write performance of HDD ~ 100MB
> vm.dirty_background_bytes=67108864
> vm.dirty_bytes=268435456
>
> Maybe this additional
Hi Luciano,
Am Wed, Sep 14, 2022 at 07:24:07AM +0200 schrieb Luciano Mannucci:
> hello all!
>
> I have a virtual machine running under kvm who started hanging giving
> this message just before it dies:
>
> kernel:[ 296.013011] watchdog: BUG: soft lockup - CPU#0 stuck for 22s!
> [swapper/0:0]
> On 14 Sep 2022, at 15:24, Luciano Mannucci wrote:
>
> hello all!
>
> I have a virtual machine running under kvm who started hanging giving
> this message just before it dies:
>
> kernel:[ 296.013011] watchdog: BUG: soft lockup - CPU#0 stuck for 22s!
> [swapper/0:0]
>
> This happens
hello all!
I have a virtual machine running under kvm who started hanging giving
this message just before it dies:
kernel:[ 296.013011] watchdog: BUG: soft lockup - CPU#0 stuck for 22s!
[swapper/0:0]
This happens only on high i/o load.
The other virtual machines are all running with no
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