similar to: performance and interrupts

I was working with the rmetrics portfolioBacktesting function and dug into the code to try to find why my formula with 113 items, i.e. A1 thru A113, was being truncated and I only get 85 items, not 113. Is it due to a string length limitation in R or is it a bug in the strsplit or gsub functions, or in my string? I'd very much appreciate any suggestions ============Input script:

Hi all, I am trying to set processor affinity for a specific process using a shell script without result. Script: #!/bin/sh -x cpu_affinity_ok="2" cpu_affinity="taskset -p -c `cat /tmp/test.pid` | awk '{print $6}'" if [ -f /tmp/test.pid ]; then if [ "$cpu_affinity" == "$cpu_affinity_ok" ]; then exit 0 else taskset -p -c 2

I see the following on one of my new servers: -ts10::sedwards:~$ cat /proc/interrupts CPU0 CPU1 CPU2 CPU3 0: 2979045 2988620 87780075 87779501 IO-APIC-edge timer 1: 1 3 2 3 IO-APIC-edge i8042 8: 0 0 0 1 IO-APIC-edge rtc 9: 0 0 0

After updating to centos 4.3, I notice a failure in terminating irqbalance whenever i shutdown the system. Checking the services after the system reboot i see the error in irqbalance: "irqbalance dead but subsys locked" Can anyone tell me what irqbalance is and if it safe to disable it ? Why i dont see it in centos 4.2? Thanks in advance. Thai

Asterisk users, I posted the following email to the Fedora users list <https://www.redhat.com/archives/fedora-list/2006-March/msg04154.html> and it got no responses, so now I'm calling on your expertise. Please take a look at it and share your knowledge on the subject with me. Additionally, let me know if you believe what I am trying to do is critically flawed. It's possible

I try do implement tests for my puppet code and was playing with rspec-puppet but the following code gives me errors require ''spec_helper'' describe ''irqbalance'' do it { should include_class(''irqbalance'') } it { should include_class(''irqbalance::data'') } it { should

I've got several SMP machines, some running CentOS 4.3 and some running Fedora Core 4. All machine are kept fully updated. A few are Pentium3-based and a few are Pentium4-based. They are all running the irqbalance daemon. The distribution of interrupts across CPUs is indeed kept balanced, yet even after months of uptime ps shows no CPU use whatsoever by irqbalance. This from a

(copying debian-kernel for reasons which will hopefully become obvious) On Mon, 8 Jul 2013 18:10:58 +0200 =?UTF-8?Q?Moritz_M=C3=BChlenhoff?= <jmm at inutil.org> wrote: > In current Debian kernel there's no special Xen dom0 kernel image and depending > on irqbalance in the kernel package would be overkill. Would it? I thought irqbalance is actually required even for native with

I am running irqbalance with default configuration on an Atom 330 machine. This CPU has 2 physical cores + 2 SMT (aka Hyperthreading) cores. As shown below the interrupt for the eth0 device is always on CPUs 0 and 1, with CPUs 2 and 3 left idle. But why? Maybe irqbalance prefers physical cores? My understanding, though, is that the even-numbered CPUs are the physical cores, with the

On Sun, 2014-08-31 at 03:10 +0100, Ian Campbell wrote: > (copying debian-kernel for reasons which will hopefully become obvious) > > On Mon, 8 Jul 2013 18:10:58 +0200 =?UTF-8?Q?Moritz_M=C3=BChlenhoff?= <jmm at inutil.org> wrote: > > In current Debian kernel there's no special Xen dom0 kernel image and depending > > on irqbalance in the kernel package would be

Hi All, If I turn off irqbalance xen/arch/x86/irq.c, does that actually stop XEN from balancing irqs across different physical cpus, or will that override the setting if there are too many interrupts and one of the cpus is overloaded. Example: i have 4 cpus and i have configured irqbalance= off, so there is no irqbalancing done by xen. Now if i have affintized all my physical interrutps to one

Hi. Can anyone confirm if vcpupin works correctly with kvm? If set I pin a vcpu it shows up correctly via vcpuinfo, but querying via taskset shows the cpu is not pinned. Thanks, -Geoff -- ---- Geoff Galitz, ggalitz at shutterstock.com WebOps Engineer, Europe Shutterstock Images http://wwww.shutterstock.com/

On 01/24/2017 11:16 AM, Kevin Stange wrote: > On 01/24/2017 09:10 AM, Konrad Rzeszutek Wilk wrote: >> On Tue, Jan 24, 2017 at 09:29:39PM +0800, -=X.L.O.R.D=- wrote: >>> Kevin Stange, >>> It can be either kernel or update the NIC driver or firmware of the NIC >>> card. Hope that helps! >>> >>> Xlord >>> -----Original Message-----

i have ubuntu 11.04 with wine 1.3.27 amd athlon x2 64 ati radieon 3100 i use this path to start the client /home/nick/.wine/drive_c/"Program Files"/Sony/EverQuest/eqgame.exe taskset -c 0 patchme -opengl it goes to black screen and gives the following UIErrorLog created at Sat Sep 10 19:41:40 2011 [Sat Sep 10 19:41:40 2011] Warning: file EQLSUI.xml not found in directory

Hello, According to the docs, vcpupin will use either cgroups or sched_setaffinity to pin vcpu threads to cpus. How is this decision made? I observe differences even on different hosts featuring the same version of libvirtd (1.3.1): on one host vcpupin affects cpuset.cpus (cgroup), and on the other it affects vcpu threads affinity (observed through taskset). Thanks, Nikos -------------- next

On 01/26/2017 09:32 AM, Johnny Hughes wrote: > On 01/25/2017 11:49 AM, Kevin Stange wrote: >> On 01/24/2017 11:16 AM, Kevin Stange wrote: >>> On 01/24/2017 09:10 AM, Konrad Rzeszutek Wilk wrote: >>>> On Tue, Jan 24, 2017 at 09:29:39PM +0800, -=X.L.O.R.D=- wrote: >>>>> Kevin Stange, >>>>> It can be either kernel or update the NIC driver or

I asked here a week or so ago, and referenced an older bug, but haven't seen any comments. Googling, I see others asking about the same. Datum: *every* one I've found is like this: they're all HP DL580's or DL380's, or such. This is being used for heavy-duty scientific computing. Does anyone know if it *will* it seriously affect throughput speed if I turn off irqbalance?

On 01/26/2017 02:08 PM, Kevin Stange wrote: > On 01/26/2017 09:35 AM, Johnny Hughes wrote: >> On 01/26/2017 09:32 AM, Johnny Hughes wrote: >>> On 01/25/2017 11:49 AM, Kevin Stange wrote: >>>> On 01/24/2017 11:16 AM, Kevin Stange wrote: >>>>> On 01/24/2017 09:10 AM, Konrad Rzeszutek Wilk wrote: >>>>>> On Tue, Jan 24, 2017 at 09:29:39PM

On 12/03/2013 12:52 AM, Nicolas Sebrecht wrote: > This is about CPU affinity. You may look at CPU pinning with 'vcpupin' > in the manual of virsh. It is possible to enable vCPU pinning in libvirt > guest XML. > > Don't know if libvirt supports applying CPU affinity at guest runtime Yes, 'virsh vcpupin' can be used to change CPU affinity at runtime. > but

On Tue, Jan 24, 2017 at 09:29:39PM +0800, -=X.L.O.R.D=- wrote: > Kevin Stange, > It can be either kernel or update the NIC driver or firmware of the NIC > card. Hope that helps! > > Xlord > -----Original Message----- > From: CentOS-virt [mailto:centos-virt-bounces at centos.org] On Behalf Of Kevin > Stange > Sent: Tuesday, January 24, 2017 1:04 AM > To: centos-virt