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...93.62% qemu-kvm [kernel.kallsyms] [k] _raw_spin_lock - _raw_spin_lock + 45.30% kvm_mmu_sync_roots + 28.49% kvm_mmu_load + 25.00% mmu_free_roots + 1.12% tdp_page_fault ?n joi, 18 aug. 2016 la 11:59, Laurentiu Soica <laurentiu at soica.ro> a scris: > I've tried with KSM disabled and nothing changed. > > I've upgraded KVM to qemu-kvm-ev. I'm waiting to see if there are any > improvements and report back. > > ?n mie., 17 aug. 2016 la 15:10, Boris Derzhavets <bderzhavets at hotmail.com> > a scris: > &g...

...entOS Subject: Re: [CentOS-virt] Nested KVM issue Both baremetal and compute ? Are there any other metrics do you consider useful to collect for troubleshooting purposes ? ?n mie., 17 aug. 2016 la 13:04, Boris Derzhavets <bderzhavets at hotmail.com<mailto:bderzhavets at hotmail.com>> a scris: It sounds weird, but attempt to disable KSM and see would it help or no ? ________________________________ From: centos-virt-bounces at centos.org<mailto:centos-virt-bounces at centos.org> <centos-virt-bounces at centos.org<mailto:centos-virt-bounces at centos.org>> on behalf...

...ted 24547132 free 76730936 Wed Aug 17 08:52:52 UTC 2016: 45139624 < 102962460 and free > 20592492, stop ksm and the compute node is again at 100% CPU utilization. ?n mar., 16 aug. 2016 la 15:26, Boris Derzhavets <bderzhavets at hotmail.com<mailto:bderzhavets at hotmail.com>> a scris: I would enable ksmtuned logging ,if it has been done verify logs ________________________________ From: centos-virt-bounces at centos.org<mailto:centos-virt-bounces at centos.org> <centos-virt-bounces at centos.org<mailto:centos-virt-bounces at centos.org>> on behalf of Lauren...

...sday, August 16, 2016 7:16 AM To: Discussion about the virtualization on CentOS Subject: Re: [CentOS-virt] Nested KVM issue Yes. It is on both baremetal and compute node. ?n mar., 16 aug. 2016 la 13:37, Boris Derzhavets <bderzhavets at hotmail.com<mailto:bderzhavets at hotmail.com>> a scris: Is KSM enabled on your Compute Nodes ( presuming CentOS 7.2 on bare metal ) ? ________________________________ From: centos-virt-bounces at centos.org<mailto:centos-virt-bounces at centos.org> <centos-virt-bounces at centos.org<mailto:centos-virt-bounces at centos.org>> on be...

I've tried with KSM disabled and nothing changed. I've upgraded KVM to qemu-kvm-ev. I'm waiting to see if there are any improvements and report back. ?n mie., 17 aug. 2016 la 15:10, Boris Derzhavets <bderzhavets at hotmail.com> a scris: > For myself KSM is unpredictable feature. The problem is Compute, just this > node > > does "copy on write" , so only Compute. > > My concern exactly is where would it lead to worse or better Guest > behavior ? > > I am not expecting complete fix. I would tr...

..., 2016 5:25 AM To: Discussion about the virtualization on CentOS Subject: Re: [CentOS-virt] Nested KVM issue Running the compute node for several days simply triggers it. ?n mar., 16 aug. 2016 la 12:12, Boris Derzhavets <bderzhavets at hotmail.com<mailto:bderzhavets at hotmail.com>> a scris: Sorry, How you trigger the problem ? B. ________________________________ From: centos-virt-bounces at centos.org<mailto:centos-virt-bounces at centos.org> <centos-virt-bounces at centos.org<mailto:centos-virt-bounces at centos.org>> on behalf of Laurentiu Soica <laurentiu...

Both baremetal and compute ? Are there any other metrics do you consider useful to collect for troubleshooting purposes ? ?n mie., 17 aug. 2016 la 13:04, Boris Derzhavets <bderzhavets at hotmail.com> a scris: > It sounds weird, but attempt to disable KSM and see would it help or no ? > > > ------------------------------ > *From:* centos-virt-bounces at centos.org <centos-virt-bounces at centos.org> > on behalf of Laurentiu Soica <laurentiu at soica.ro> > *Sent:* Wednes...

...pin_lock > > > - _raw_spin_lock > > > + 45.30% kvm_mmu_sync_roots > > > + 28.49% kvm_mmu_load > > > + 25.00% mmu_free_roots > > > + 1.12% tdp_page_fault > > ?n joi, 18 aug. 2016 la 11:59, Laurentiu Soica a > scris: > >> I've tried with KSM disabled and nothing changed. >> >> I've upgraded KVM to qemu-kvm-ev. I'm waiting to see if there are >> any improvements and report back. >> >> ?n mie., 17 aug. 2016 la 15:10, Boris Derzhavets >> <bderzhavets...

...ute: Wed Aug 17 08:52:52 UTC 2016: committed 24547132 free 76730936 Wed Aug 17 08:52:52 UTC 2016: 45139624 < 102962460 and free > 20592492, stop ksm and the compute node is again at 100% CPU utilization. ?n mar., 16 aug. 2016 la 15:26, Boris Derzhavets <bderzhavets at hotmail.com> a scris: > I would enable ksmtuned logging ,if it has been done verify logs > > > ------------------------------ > *From:* centos-virt-bounces at centos.org <centos-virt-bounces at centos.org> > on behalf of Laurentiu Soica <laurentiu at soica.ro> > *Sent:* Tuesday, August...

...3:13.65 qemu-kvm .... There are more than 70 GB of memory available on the compute node. All VMs are using 100% their CPUs and they are not accessible anymore. Laurentiu ?n dum., 14 aug. 2016 la 21:44, Boris Derzhavets <bderzhavets at hotmail.com<mailto:bderzhavets at hotmail.com>> a scris: ________________________________ From: centos-virt-bounces at centos.org<mailto:centos-virt-bounces at centos.org> <centos-virt-bounces at centos.org<mailto:centos-virt-bounces at centos.org>> on behalf of Laurentiu Soica <laurentiu at soica.ro<mailto:laurentiu at soica....

Yes. It is on both baremetal and compute node. ?n mar., 16 aug. 2016 la 13:37, Boris Derzhavets <bderzhavets at hotmail.com> a scris: > Is KSM enabled on your Compute Nodes ( presuming CentOS 7.2 on bare metal > ) ? > > > ------------------------------ > *From:* centos-virt-bounces at centos.org <centos-virt-bounces at centos.org> > on behalf of Laurentiu Soica <laurentiu at soica.ro> > *Sen...

...than 80 GB available. Note that a reboot of the compute node doesn't fix the problem. Only a shutdown of the compute and a virsh start on it works. Thanks, Laurentiu ?n dum., 14 aug. 2016 la 23:27, Boris Derzhavets <bderzhavets at hotmail.com<mailto:bderzhavets at hotmail.com>> a scris: Reports posted look good for me. Config should provide the best available performance for cloud VM (L2) on Compute Node. 1. Please, remind me what goes wrong from your standpoint ? 2. Which CPU is installed on Compute Node && how much RAM ? Actually , my concern is :-...

...from baremetal with virsh start. A simple restart of the compute node doesn't help. It looks like the qemu-kvm process corresponding to the compute VM is the problem. Laurentiu ?n dum., 14 aug. 2016 la 00:19, Laurentiu Soica <laurentiu at soica.ro<mailto:laurentiu at soica.ro>> a scris: Hello, I have an OpenStack setup in virtual environment on CentOS 7. The baremetal has nested KVM enabled and 1 compute node as a VM. Inside the compute node I have multiple VMs running. After about every 3 days the VMs get inaccessible and the compute node reports high CPU usage. The qemu-kvm...

Running the compute node for several days simply triggers it. ?n mar., 16 aug. 2016 la 12:12, Boris Derzhavets <bderzhavets at hotmail.com> a scris: > Sorry, > > How you trigger the problem ? > > B. > > > ------------------------------ > *From:* centos-virt-bounces at centos.org <centos-virt-bounces at centos.org> > on behalf of Laurentiu Soica <laurentiu at soica.ro> > *Sent:* Tuesday, August 16,...

...#39;^#' virt_type=kvm [root at overcloud-novacompute-0 ~]# cat /etc/nova/nova.conf | grep cpu_mode|grep -v '^#' cpu_mode=host-passthrough Thanks, Laurentiu ?n dum., 14 aug. 2016 la 21:44, Boris Derzhavets <bderzhavets at hotmail.com<mailto:bderzhavets at hotmail.com>> a scris: ________________________________ From: centos-virt-bounces at centos.org<mailto:centos-virt-bounces at centos.org> <centos-virt-bounces at centos.org<mailto:centos-virt-bounces at centos.org>> on behalf of Laurentiu Soica <laurentiu at soica.ro<mailto:laurentiu at soica....

...v2. I could try lowering the vCPUs but I doubt it would help. Please note that the same VMs are running just fine (with a load of 2 out of an acceptable 36 on the compute node) for about 3 days after a restart. ?n lun., 15 aug. 2016 la 08:42, Boris Derzhavets <bderzhavets at hotmail.com> a scris: > I would attempt to decrease number of VCPUS allocated to cloud VMs. > > Say try 4 => 2 . My guess there is not enough VCPUs to run OS itself. > > I also guess CPU model << Haswell. Please , confirm ( or not) if possible. > > Since Haswell was launched via my experi...

On Mon, 26 Feb 2018 12:27:56 +0200 Arcadie Cracan <arcadiec at gmail.com> wrote: > Dear Rowland, > > I have commented out the 'idmap config' options, nothing changed. > Here are my bind9 configs: > > /etc/bind/named.conf: Nothing wrong there > > /etc/bind/named.conf.options: > options { > directory "/var/cache/bind"; >

So basically you're saying that this THP feature is broken for CentOS 7 ? The feature is enabled by default. Is there a thread opened on this issue ? ?n mie., 24 aug. 2016 la 18:13, <m.roth at 5-cent.us> a scris: > Laurentiu Soica wrote: > > Hello, > > > > I have a CentOS 7 installation on baremetal with 2 CPUs, 10 cores each > and > > HT enabled, 128 GB RAM. > > > > The system has transparent hugetables enabled. > <snip> > > So it turns out that ev...

Pe 7 Aug 2013 11:35, Timo Sirainen a scris: >> Thank you, but doveadm expunge will ask for the mailbox name: >> >> [root at mail1 ~]# doveadm expunge -u john.doe at example.com ON >> 2013-08-07 doveadm(root): Fatal: expunge: To avoid accidents, >> search query must contain MAILBOX in all search branches > &...

...about 2 days) but for now there are more than 80 GB available. Note that a reboot of the compute node doesn't fix the problem. Only a shutdown of the compute and a virsh start on it works. Thanks, Laurentiu ?n dum., 14 aug. 2016 la 23:27, Boris Derzhavets <bderzhavets at hotmail.com> a scris: > Reports posted look good for me. Config should provide the best > available performance > > for cloud VM (L2) on Compute Node. > > > 1. Please, remind me what goes wrong from your standpoint ? > > 2. Which CPU is installed on Compute Node && how much RA...