similar to: High CPU usage when running a CentOS guest in VirtualBox

Hi everyone, I have been struggling with having the clock of Linux VM's (including CentOS 4.6 and 5.1) running very fast under VMWare, no matter what I have tried. My platform: - AMD Turion X2 TL-60 - AMD 690 chipset with integrated Radeon x1250 (probably doesn't concern in this case) - Windows Vista Ultimate x64, all Windows Update patches loaded (no SP1 yet) - 4GB RAM - VMWare

Hi I logged in to one of my servers today and noticed that the load average is very high. After investigating the problem I found two processes in "D" stat ("uninterruptible sleep"): root 24344 0.0 0.2 1532 584 ? DN Jul21 0:01 /usr/bin/updatedb -f NFS,SMBFS,NCPFS,PROC,DEVPTS -e /tmp,/var/tmp,/usr/tmp,/afs,/net root 25899 0.0 0.2 1532 584 ? DN

Howdy, I am having time-drift issues on my CentOS VM. I had referred to following documentation: http://wiki.centos.org/TipsAndTricks/VMWare_Server , however it didn't help. I used kickstart for creating this VM and I am listing important steps in ref to timekeeping issue. Any comments or suggestion would be appreciated. - CS. ------------------- # For EL5 virtual machines, Append the

Hi all, If you are using the kernel divider= option in your vmware quest, you are probably aware of the bugs reported at: https://bugzilla.redhat.com/show_bug.cgi?id=315471 Someone @redhat "confirmed" the fix is in the test kernel -92. I tried it but it seems to have the same problem as before - when used with clocksource=pit, it hangs on bootup. Wonder if some of you can test this

Currently, if you are running CentOS-4.x on a Vmware box you end up with time skew problems. The main fix has been using a set of recompiled kernel that has a HZ that is more fitting with what Vmware expects (eg 100 hz). The 4.7 kernels look like they will not need this: http://jons-thoughts.blogspot.com/2008/04/rhel-and-vmware-time-skew-problems.html Well, I've gotten quite the number of

Hi everyone: Just a follow up on the fast clock issue: "Can you double-check that 'cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq' outputs the same number as your 'cpuKHZ' setting in your config.ini file?" There is no cpufreq directory under /sys/devices/system/cpu/cpu0; all I see is "cache" (dir), "crash_notes" (a file) and

Ok here is a real geek question, I building my own linux kernel for my asterisk system and came across the kernel setting for the timer frequency. I have one of 3 hardcode choices 100Hz, 250 Hz and 1000Hz. From what I understand the default Freq was changed from 100Hz in kernel 2.4 to 1000Hz (1KHz) in kernel 2.6. Timing is a BIG issue in asterisk with all the TDM and zap channel stuff.

Running Dovecot 2.0.8 on 32bit Centos5.5. The machine is a VMWare ESX VM. I'm seeing a lot of warning messages in syslog as follows: 2011-01-14T11:45:37.315917+08:00 imap4 dovecot: imap: Warning: Time jumped forwards 105 seconds 2011-01-14T11:46:00.598006+08:00 imap4 dovecot: imap: Warning: Time jumped forwards 106 seconds 2011-01-14T11:46:25.364405+08:00 imap4 dovecot: imap: Warning: Time

We've noticed our fully-virtualized KVM guests' time keeps getting faster, despite running ntpd. A quick google reveals this to be a known problem with virtual guests. It seems there are a variety of solutions, some apparently vendor-specific. What is the best practice as of now for KVM guests? * Setting independent_wallclock=1 (or is that a xen-only thing)? * Passing kernel

Hi, I'm building a test asterisk server and building the latest kernel I got to wonder if there are any specific recommendations about schedulers and so forth for optimum performance. There are a few areas that raise questions in my mind and I wonder if anyone has any opinions/comments on which settings are most suitable for use with asterisk: SLAB Allocator (SLAB or SLUB?) Tickless

Hi folks, I hope this is the right place to ask - if not I can switch to the CentOS mailing list. I am running GITCOs 3.4.3 hypervisor with original RHEL5.5/CentOS5.5 kernels in dom0 and domU. I have phenonema I want to get rid of (like time running wild - really wild). So I am looking for a way to compile a kernel with all CentOS refinements/backports/additions and xen 3.4.3. I have

Hi! Can I create the unnumbered GRE tunnel with iproute2 utility? Can someone provide me a link/howto/example_config how to do it? The topology is one tunnel between two linux boxes: -- eth1-|__|-eth0 <-------------> eth0-|__|-eth1 -- I''m trying now with: ip tu add tun1 mode gre local loc.IP remote rem.IP ttl 255 dev eth0 ip addr add tun1 0.0.0.0 ip link set tun1 up but it

I'm running VMware Server 1.0.6 on a CentOS 5.2 host and am having some clock difficulties. Host OS is x86_64 running on 1.9 GHz AMD Sempron, nVidia chipset. Guest OS's are 32-bit FreeBSD (clock works fine after disabling ACPI, setting the clock source to the PIT, and running the guest tools), WinXP (unknown clock status), and i686 CentOS 5.2 (here is the problem). I've tried pretty

Hello, I was thinking of creating a wiki page about Xen clocksources and timekeeping.. including dom0, PV guests and HVM guests. Dan and Jeremy: You guys might have some ideas for this page.. please let me know your thoughts :) Subjects to cover: - Xen hypervisor clocksources (hpet, acpi_pm, pit) - Xen dom0 clocksource, ntpd, etc - Xen PV guest clocksources, independent_wallclock, ntpd,

On Sun, Apr 06, 2014 at 09:32:09PM +0000, Nicholas A. Bellinger wrote: > From: Nicholas Bellinger <nab at linux-iscsi.org> > > This patch updates virtscsi_probe() to setup necessary Scsi_Host > level protection resources. (currently hardcoded to 1) > > It changes virtscsi_add_cmd() to attach outgoing / incoming > protection SGLs preceeding the data payload, and is

On Sun, Apr 06, 2014 at 09:32:09PM +0000, Nicholas A. Bellinger wrote: > From: Nicholas Bellinger <nab at linux-iscsi.org> > > This patch updates virtscsi_probe() to setup necessary Scsi_Host > level protection resources. (currently hardcoded to 1) > > It changes virtscsi_add_cmd() to attach outgoing / incoming > protection SGLs preceeding the data payload, and is

On Mon, Apr 07, 2014 at 01:56:59AM -0700, Nicholas A. Bellinger wrote: > On Mon, 2014-04-07 at 11:45 +0300, Michael S. Tsirkin wrote: > > On Sun, Apr 06, 2014 at 09:32:09PM +0000, Nicholas A. Bellinger wrote: > > > From: Nicholas Bellinger <nab at linux-iscsi.org> > > > > > > This patch updates virtscsi_probe() to setup necessary Scsi_Host > > >

On Mon, Apr 07, 2014 at 01:56:59AM -0700, Nicholas A. Bellinger wrote: > On Mon, 2014-04-07 at 11:45 +0300, Michael S. Tsirkin wrote: > > On Sun, Apr 06, 2014 at 09:32:09PM +0000, Nicholas A. Bellinger wrote: > > > From: Nicholas Bellinger <nab at linux-iscsi.org> > > > > > > This patch updates virtscsi_probe() to setup necessary Scsi_Host > > >

Under 4.6, we recompiled the kernel with HZ=100 for improved time-keeping in VMware guests. I've read about the backporting of the divider patch into RHEL/CentOS 4.7, but it sounds like it also comes with some bugs. I have been unable to determine the current status of the divider option in the latest 4.7 kernel update. I have experimented with "divider=10" and it works with no major

On Mon, May 19, 2014 at 12:07:03PM -0700, Nicholas A. Bellinger wrote: > On Wed, 2014-05-07 at 12:13 +0300, Michael S. Tsirkin wrote: > > On Mon, Apr 07, 2014 at 01:56:59AM -0700, Nicholas A. Bellinger wrote: > > > On Mon, 2014-04-07 at 11:45 +0300, Michael S. Tsirkin wrote: > > > > On Sun, Apr 06, 2014 at 09:32:09PM +0000, Nicholas A. Bellinger wrote: > > >