search for: cpu_affinity

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 `cat /tmp/test.pid` fi fi This scrip...

...uler path, save a copy of the current cpu affinity, and mark a flag to restore it later. Later, in the resume process, when enabling nonboot cpus restore these affinities. v2: Fix formatting problems. remove early return in cpu_disable_scheduler() path. v3: Fix remaining errant tab Move restore_vcpu_affinity() to thaw_domains(), eliminating the need to promote for_each_cpupool() Signed-off-by: Ben Guthro <benjamin.guthro@citrix.com> --- xen/arch/x86/acpi/power.c | 4 ++++ xen/common/domain.c | 2 ++ xen/common/schedule.c | 41 ++++++++++++++++++++++++++++++++++++++++- xen/incl...

...& of vcpu-affinity and the set of online cpus + * in the domain''s cpupool. */ -#define __vcpu_has_node_affinity(vc) \ - ( !(cpumask_full(CSCHED_DOM(vc->domain)->node_affinity_cpumask) \ - || !cpumask_intersects(vc->cpu_affinity, \ - CSCHED_DOM(vc->domain)->node_affinity_cpumask) \ - || vc->domain->auto_node_affinity == 1) ) +static inline int __vcpu_has_node_affinity(struct vcpu *vc, cpumask_t *mask) +{ + if ( vc->domain->auto_node_affi...

Hello, My testing machine has 2 quad-core CPU (It supports hyperthreading, but i disable it in BIOS). I uses Xen 4.0.1 as the hypervisor. When I use 8 VMs to conduct a test, CPU affinity of the VMs is very strange. Like this: vm_name vcpu_num cpu_affinity Domain-0 8 any VM1 4 1,3,5,7 VM2 4 1,3,5,7 VM3 4 1,3,5,7 VM4 4 1,3,5,7 VM5 4 1,3,5,7 VM6 4 0,2,4,6 VM7 4 0,2,4,6 VM8 4 0,2,4,6 I do not set the CPU affinity in th...

I am currently looking at a bug report[1] which is happening when a Xen PVM guest with multiple VCPUs is running a high IO database load (a test script is available in the bug report). In experimenting it seems that this happens (or is getting more likely) when the number of VCPUs is 8 or higher (though I have not tried 6, only 2 and 4), having autogroup enabled seems to make it more likely, too

...ick(v); } else { - mce_printk(MCE_VERBOSE, "MCE: inject vMCE to PV DOM%d\n", - d->domain_id); - if ( guest_has_trap_callback(d, 0, TRAP_machine_check) ) - { - cpumask_copy(d->vcpu[0]->cpu_affinity_tmp, - d->vcpu[0]->cpu_affinity); - mce_printk(MCE_VERBOSE, "MCE: CPU%d set affinity, old %d\n", - cpu, d->vcpu[0]->processor); - vcpu_set_affinity(d->vcpu[0], cpumask_of(cpu)); -...

...re pinned onto their respective physical CPUs. */ v->processor = processor; - if ( is_idle_domain(d) || ((d->domain_id == 0) && opt_dom0_vcpus_pin) ) + if ( is_idle_domain(d) || ((d->domain_id == 0) && ( opt_cpufreq || opt_dom0_vcpus_pin) ) ) v->cpu_affinity = cpumask_of_cpu(processor); else cpus_setall(v->cpu_affinity); @@ -254,7 +256,7 @@ int vcpu_set_affinity(struct vcpu *v, cp { cpumask_t online_affinity; - if ( (v->domain->domain_id == 0) && opt_dom0_vcpus_pin ) + if ( (v->domain->domain_id == 0)...

...af=e8000001 (XEN) XenPage 00000beb: caf=80000001, taf=e8000001 (XEN) XenPage 00000bea: caf=80000001, taf=e8000001 (XEN) XenPage 00000be9: caf=80000002, taf=e8000002 (XEN) VCPU information and callbacks for domain 0: (XEN) VCPU0: CPU0 [has=T] flags=0 upcall_pend = 00, upcall_mask = 00 dirty_cpus={0} cpu_affinity={0} (XEN) 100 Hz periodic timer (period 10 ms) (XEN) Notifying guest (virq 1, port 0, stat 0/-1/0) (XEN) VCPU1: CPU1 [has=F] flags=2 upcall_pend = 00, upcall_mask = 01 dirty_cpus={} cpu_affinity={0-31} (XEN) 100 Hz periodic timer (period 10 ms) (XEN) Notifying guest (virq 1, port 0, stat 0/-1/0) (X...

Hello, This small series deals with some weirdness in the mechanism with which the credit scheduler choses what PCPU to tickle upon a VCPU wake-up. Details are available in the changelog of the first patch. The new approach has been extensively benchmarked and proved itself either beneficial or harmless. That means it does not introduce any significant amount of overhead and/or performances

...worse 2.67GB/sec. Is there likely something wrong with my NUMA config? Anyone have any benchmark results to share on Barcelona with HAP enabled? Do I need to pin Dom0 to a particular CPU? HAP looks OK: (XEN) VCPU0: CPU4 [has=F] flags=1 upcall_pend = 00, upcall_mask = 00 dirty_cpus={4} cpu_affinity={4} (XEN) paging assistance: hap, 4 levels NUMA looks OK: nr_cpus : 8 nr_nodes : 2 cores_per_socket : 4 threads_per_core : 1 cpu_mhz : 2000 Thanks in advance, Rob The SAQ Group Registered Office: 18 Chapel Street, Peter...

Hi Keir, The CS# 17131 which I write for bind guest to NUMA node via cpu affinity missed one condition existing in some machines, where there aren''t any cpus but only memories. Under this condition it will fail to set cpu_affinity because of none parameter. I cope with this condition in the new patch and make a little change of the methods to find suitable node to bind guest. When counting the VCPUs which have pinned to node, I use an average count instead the original sum count of Vcpus pinning cpus on certain node in case...

The patch ''mem_event: use wait queue when ring is full'' I just sent out makes use of the waitqueue feature. There are two issues I get with the change applied: I think I got the logic right, and in my testing vcpu->pause_count drops to zero in p2m_mem_paging_resume(). But for some reason the vcpu does not make progress after the first wakeup. In my debugging there is one

...vcpu_info(v, evtchn_upcall_pending), + vcpu_info(v, evtchn_upcall_mask)); cpuset_print(cpuset, sizeof(cpuset), v->vcpu_dirty_cpumask); printk("dirty_cpus=%s ", cpuset); cpuset_print(cpuset, sizeof(cpuset), v->cpu_affinity); @@ -176,11 +177,11 @@ static void dump_domains(unsigned char k printk(" Notifying guest (virq %d, port %d, stat %d/%d/%d)\n", VIRQ_DEBUG, v->virq_to_evtchn[VIRQ_DEBUG], test_bit(v->virq_to_evtchn[VIRQ_DEBUG], -...

I last posted this back in April to critical acclaim (AKA near total silence). I''m not sure who looks after tools/include/xen-foreign. I had thought it was Jan but I think I was confused and was thinking of the semi-related xen/include/compat stuff. IOW I think nobody felt "responsible". Unless there''s any objection lets just treat this as coming under tools. The

These two patches were originally part of the XSM series that I have posted, and remain prerequisites for that series. However, they are independent of the XSM changes and are a useful simplification regardless of the use of XSM. The Acked-bys on these patches were provided before rebasing them over the copyback changes in 26268:1b72138bddda, which had minor conflicts that I resolved. [PATCH

This patch series is a reworking of a series developed by Mukesh Rathor at Oracle. The entirety of the design and development was done by him; I have only reworked, reorganized, and simplified things in a way that I think makes more sense. The vast majority of the credit for this effort therefore goes to him. This version is labelled v13 because it is based on his most recent series, v11.