search for: perfctr

Regarding Perfctr-Xen (see announcement below), some have requested author''s version of the published paper. It is available on my website: http://people.cs.vt.edu/~rnikola/?page_id=159 Please, let me know what you think. Also, I want to iterate my point regarding Perfctr-Xen vs XenoProf: XenoProf is use...

Has anyone succesfully compiled a PAPI+perfctr-enabled kernel? I've been mixing and matching instructions from the PAPI distribution and those from CentOS wiki to no avail. TIA -- Eduardo Grosclaude Universidad Nacional del Comahue Neuquen, Argentina

Hi all: We have a user who needs to do some work with PAPI, which requires the perfctr patch applied to the kernel proper. Before I do that work here, I wanted to ask the list if anyone knows of a repo where such kernels are available? Also, if anyone has gone down this route and has helpful hints, perspectives, horror stories, etc., I would covet that information also. Cheers...

Hi all, I have installed a CentOS-8 server to accomplish some tests using kvm guests ? All these guests are centos8 also. When these guests starts, I always see errors like: [ 589.687915] kvm [2133]: vcpu0, guest rIP: 0xffffffff81a5bc98 disabled perfctr wrmsr: 0xc2 data 0xffff [ 596.210773] kvm [2201]: vcpu0, guest rIP: 0xffffffffb885bc98 disabled perfctr wrmsr: 0xc2 data 0xffff Is this a bug? I am not using virt-manager to create guests configuration ? Any idea? Kernel release is: 4.18.0-80.11.2 -- Regards, C. L. Martinez

.../nv_perfmon.c > index a8c5838..30a3138 100644 > --- a/bin/nv_perfmon.c > +++ b/bin/nv_perfmon.c > @@ -600,7 +600,7 @@ main(int argc, char **argv) > const char *cfg = NULL; > const char *dbg = "error"; > u64 dev = ~0ULL; > - struct nvif_perfctr_query_v0 args = {}; > + struct nvif_perfmon_query_signal_v0 args = {}; > struct nvif_client *client; > struct nvif_object object; > int ret, c, k; > @@ -644,15 +644,14 @@ main(int argc, char **argv) > } > > ret = nvif_object_init...

...on br0 to 192.168.5.58 port 67 (xid=0x48d081b6) Feb 16 02:04:54 thirteen-230 dhclient[1272]: DHCPACK from 192.168.5.58 (xid=0x48d081b6) Feb 16 02:04:55 thirteen-230 dhclient[1272]: bound to 192.168.13.230 -- renewal in 8735 seconds. Feb 16 02:46:09 thirteen-230 kernel: kvm: 1994: cpu0 unimplemented perfctr wrmsr: 0xc0010004 data 0xffffffffffffd8f0 Feb 16 02:46:09 thirteen-230 kernel: kvm: 1994: cpu0 unimplemented perfctr wrmsr: 0xc0010000 data 0x530076 Feb 16 03:53:39 thirteen-230 kernel: kvm: 2161: cpu0 unimplemented perfctr wrmsr: 0xc0010004 data 0xffffffffffffd8f0 Feb 16 03:53:39 thirteen-230 kern...

...n any significant way, but the root filesystem is off-limits. (This will happen on just one of our servers; the other VM platforms run without issue.) In /var/log/messages, I'll see the following entry for each impacted VM: <date> <host> kernel: kvm: <pid>: cpu0 disabled perfctr wrmsr: 0xc1 data 0xabcd In /var/log/libvirt/qemu/<vm-name>.log, I'll see block I/O error in device 'drive-virtio-disk0': Stale file handle (116) Oddly, the underlying host might be running, say, five VMs, but only four of them will get the log messages, and show the read-onl...

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...68.5.58 port 67 (xid=0x48d081b6) > Feb 16 02:04:54 thirteen-230 dhclient[1272]: DHCPACK from 192.168.5.58 (xid=0x48d081b6) > Feb 16 02:04:55 thirteen-230 dhclient[1272]: bound to 192.168.13.230 -- renewal in 8735 seconds. > Feb 16 02:46:09 thirteen-230 kernel: kvm: 1994: cpu0 unimplemented perfctr wrmsr: 0xc0010004 data 0xffffffffffffd8f0 > Feb 16 02:46:09 thirteen-230 kernel: kvm: 1994: cpu0 unimplemented perfctr wrmsr: 0xc0010000 data 0x530076 > Feb 16 03:53:39 thirteen-230 kernel: kvm: 2161: cpu0 unimplemented perfctr wrmsr: 0xc0010004 data 0xffffffffffffd8f0 > Feb 16 03:53:39 th...

...i, I had a C7 virtual machine running on a C7 host for several weeks without any problems. Today I rebootet the host and now the virtual machine does not start anymore. I can see grub coming up and starting the kernel. After some seconds the last thing that is visble on the VM console is "ss perfctr msr (MSR c1 is0)" then the screen goes blank with just a blinking cursor in the upper left corner. After that nothing happens anymore. The CPU load on the host is nearly 0%. Any ideas what could be the reason and how to solve this? Best regards, Bernd

> -----Original Message----- > From: Chris Murphy > Sent: Tuesday, February 17, 2015 3:58 > > I think the panic is the consequence of drive write failure. > So the actual > problem is before the panic call trace. Most of the time it panics without any warning, but once there was: > > -----Original Message----- > > From: Jason Pyeron > > Sent: Sunday,

Since C8.1 kvm guests have a huge delay while booting on a kvm host based on C6. This delay was not present with C8.0. The "pause" happend direct after the grub step. The VNC session shows only a "_" character. Any ideas what changes? -- Leon

...80::fc54:ff:fe43:bf8c on vnet0.*. Jan 27 12:02:54 1235 ntpd[2905]: Listen normally on 29 vnet0 fe80::fc54:ff:fe43:bf8c UDP 123 Jan 27 12:02:54 1235 ntpd[2905]: peers refreshed Jan 27 12:03:17 1235 kernel: __ratelimit: 23 callbacks suppressed Jan 27 12:03:17 1235 kernel: kvm: 8006: cpu0 disabled perfctr wrmsr: 0xc1 data 0xabcd Jan 27 12:03:20 1235 kernel: ixgbe 0000:15:00.0: eth6: VF Reset msg received from vf 0 And this is the /var/log/libvirt/qemu/probe8.log from the host 2015-01-27 17:02:51.762+0000: starting up LC_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin QEMU_AUDIO_DRV=none /us...

...80::fc54:ff:fe43:bf8c on vnet0.*. Jan 27 12:02:54 1235 ntpd[2905]: Listen normally on 29 vnet0 fe80::fc54:ff:fe43:bf8c UDP 123 Jan 27 12:02:54 1235 ntpd[2905]: peers refreshed Jan 27 12:03:17 1235 kernel: __ratelimit: 23 callbacks suppressed Jan 27 12:03:17 1235 kernel: kvm: 8006: cpu0 disabled perfctr wrmsr: 0xc1 data 0xabcd Jan 27 12:03:20 1235 kernel: ixgbe 0000:15:00.0: eth6: VF Reset msg received from vf 0 And this is the /var/log/libvirt/qemu/probe8.log from the host 2015-01-27 17:02:51.762+0000: starting up LC_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin QEMU_AUDIO_DRV=none /us...

.... dmesg on the kvm host (centos 6) says: device vnet9 entered promiscuous mode br0: port 5(vnet9) entering forwarding state device vnet10 entered promiscuous mode br1: port 5(vnet10) entering forwarding state vnet10: no IPv6 routers present vnet9: no IPv6 routers present kvm: 17778: cpu0 disabled perfctr wrmsr: 0xc2 data 0xffff e1000e: eth0 NIC Link is Down ... ethtool -k output differs in "rx-vlan-filter" (off for eth0) centos 6 kernel is 2.6.32-573.22.1.el6.x86_64 what could be wrong? thx matthias

...y a "_" character. >> > > and this are the corresponding logs. The guest system continues to boot after ~5 minutes. At that point this appears > > May 16 16:44:14 ev kernel: kvm: 8458: cpu0 unhandled rdmsr: 0x140 > May 16 16:44:14 ev kernel: kvm: 8458: cpu0 disabled perfctr wrmsr: 0xc2 data 0xffff > May 16 16:44:14 ev kernel: kvm: 8458: cpu1 unhandled rdmsr: 0x140 > May 16 16:44:14 ev kernel: kvm: 8458: cpu2 unhandled rdmsr: 0x140 > May 16 16:44:14 ev kernel: kvm: 8458: cpu3 unhandled rdmsr: 0x140 > May 16 16:44:15 ev kernel: kvm: emulating exchange as wri...

...eview. Thanks in advance! Samuel Pitoiset (20): pm: prevent freeing the wrong engine context pm: fix a potential race condition when creating an engine context pm: remove pmu signals pm: remove unused nvkm_perfsig_wrap() function pm: reorganize the nvif interface pm: prevent creating a perfctr object when signals are not found pm: implement NVIF_PERFMON_V0_QUERY_DOMAIN method pm: allow to query signals by domain pm: change signal iter to u16 pm: use hardware signals indexes instead of user-readable names pm: allow to monitor hardware signal index 0x00 pm: add concept of sourc...

...2er avx512cd avx512bw avx512vl avx512vbmi umip pku ospke rdpid avx512-4vnniw avx512-4fmaps syscall nx mmxext fxsr-opt pdpe1gb rdtscp lm 3dnowext 3dnow lahf-lm cmp-legacy svm extapic cr8legacy abm sse4a misalignsse 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 tce nodeid-msr tbm topoext perfctr-core perfctr-nb invtsc xstore xstore-en xcrypt xcrypt-en ace2 ace2-en phe phe-en pmm pmm-en kvmclock kvm-nopiodelay kvm-mmu kvmclock kvm-asyncpf kvm-steal-time kvm-pv-eoi kvm-pv-unhalt kvmclock-stable-bit npt lbrv svm-lock nrip-save tsc-scale vmcb-clean flushbyasid decodeassists paus...

...message. The few notes that I manually copied, subject to transcription errors, were: ? pci-configure - slot 0x365.0x420 . . . pic (ed. note: transcription error? maybe pci?) . . . pciehpd - Tainted: G D -------- 2.6.32-504.12.2.el6.x86_64 #1 panic+0x17/0x16f . . . kvm 2998 cpu0 disabled: perfctr wrmsr 0xc1 data 0xabcd 1. Is there any way to get the entire console display following a panic as a text file? 2. I take that this points to a hardware issue of some sort. Any suggestions as to where I look? The system has two NICs but one is disused and has no cable. Following a update last y...

.... The VNC session shows only a "_" character. > and this are the corresponding logs. The guest system continues to boot after ~5 minutes. At that point this appears May 16 16:44:14 ev kernel: kvm: 8458: cpu0 unhandled rdmsr: 0x140 May 16 16:44:14 ev kernel: kvm: 8458: cpu0 disabled perfctr wrmsr: 0xc2 data 0xffff May 16 16:44:14 ev kernel: kvm: 8458: cpu1 unhandled rdmsr: 0x140 May 16 16:44:14 ev kernel: kvm: 8458: cpu2 unhandled rdmsr: 0x140 May 16 16:44:14 ev kernel: kvm: 8458: cpu3 unhandled rdmsr: 0x140 May 16 16:44:15 ev kernel: kvm: emulating exchange as write Any ideas? --...