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Hello, This patchset introduces steal time accounting support for the VMware guest. The idea and implementation of guest steal time support is similar to KVM ones and it is based on steal clock. The steal clock is a per CPU structure in a shared memory between hypervisor and guest, initialized by each CPU through hypercall. Steal clock...

2016-10-24 16:39+0200, Paolo Bonzini: > On 19/10/2016 19:24, Radim Kr?m?? wrote: >>> > + if (vcpu->arch.st.msr_val & KVM_MSR_ENABLED) >>> > + if (kvm_read_guest_cached(vcpu->kvm, &vcpu->arch.st.stime, >>> > + &vcpu->arch.st.steal, >>> > + sizeof(struct kvm_steal_time)) == 0) { >>> > + vcpu->arch.st.steal.preempted = 1; >>> > + kvm_write_guest_cached(vcpu->kvm, &vcpu->arch.st.stime, >>> > + &vcpu->arch.st.steal, >>> > + sizeof(str...

2016-10-24 16:39+0200, Paolo Bonzini: > On 19/10/2016 19:24, Radim Kr?m?? wrote: >>> > + if (vcpu->arch.st.msr_val & KVM_MSR_ENABLED) >>> > + if (kvm_read_guest_cached(vcpu->kvm, &vcpu->arch.st.stime, >>> > + &vcpu->arch.st.steal, >>> > + sizeof(struct kvm_steal_time)) == 0) { >>> > + vcpu->arch.st.steal.preempted = 1; >>> > + kvm_write_guest_cached(vcpu->kvm, &vcpu->arch.st.stime, >>> > + &vcpu->arch.st.steal, >>> > + sizeof(str...

...ool vcpu_is_preempted(int cpu). It > takes the cpu as parameter and return true if the cpu is preempted. Then > kernel can break the spin loops upon on the retval of vcpu_is_preempted. > > As kernel has used this interface, So lets support it. > > We use one field of struct kvm_steal_time to indicate that if one vcpu > is running or not. > > unix benchmark result: > host: kernel 4.8.1, i5-4570, 4 cpus > guest: kernel 4.8.1, 8 vcpus > > test-case after-patch before-patch > Execl Throughput | 18307.9 lps | 11701.6 lps...

...ool vcpu_is_preempted(int cpu). It > takes the cpu as parameter and return true if the cpu is preempted. Then > kernel can break the spin loops upon on the retval of vcpu_is_preempted. > > As kernel has used this interface, So lets support it. > > We use one field of struct kvm_steal_time to indicate that if one vcpu > is running or not. > > unix benchmark result: > host: kernel 4.8.1, i5-4570, 4 cpus > guest: kernel 4.8.1, 8 vcpus > > test-case after-patch before-patch > Execl Throughput | 18307.9 lps | 11701.6 lps...

...checkpointing and when its reach 0% of idle cpu the local backing device will freeze and damage the replication. Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn drbd1 0.00 0.00 0.00 0 0 avg-cpu: %user %nice %system %iowait %steal %idle 1.52 0.00 6.09 0.00 0.00 92.39 Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn drbd1 0.00 0.00 0.00 0 0 avg-cpu: %user %nice %system %iowait %steal %idle 41.24 0.00 12.37...

Hi All, I'd appreciate some help on how to implement "call stealing". That is, where you dial a code to redirect any call on the system to your handset. I'm getting rid of my BRI service and I'm trying to replace the functionality of my existing ISDN2e PBX (Cybergear Gold) with VOIP and Asterisk. On my ISDN PBX, the short-code *46 does this. For ex...

In order to fully resolve the lock waiter preemption problem in virtual guests, it is necessary to enable lock stealing in the lock waiters. A simple test-and-set lock, however, has 2 main problems: 1) The constant spinning on the lock word put a lot of cacheline contention traffic on the affected cacheline, thus slowing tasks that need to access the cacheline. 2) Lock starvation is a real possibility...

..._on_owner. >>>> These spin_on_onwer variant also cause rcu stall before we apply this patch set >>> >>> Paolo, could you help out with an (x86) KVM interface for this? >> >> If it's just for spin loops, you can check if the version field in the >> steal time structure has changed. > > Steal time will not be updated until ahead of next vmentry except > wrmsr MSR_KVM_STEAL_TIME. So it can't represent it is preempted > currently, right? Hmm, you're right. We can use bit 0 of struct kvm_steal_time's flags to indicate that pa...

..._on_owner. >>>> These spin_on_onwer variant also cause rcu stall before we apply this patch set >>> >>> Paolo, could you help out with an (x86) KVM interface for this? >> >> If it's just for spin loops, you can check if the version field in the >> steal time structure has changed. > > Steal time will not be updated until ahead of next vmentry except > wrmsr MSR_KVM_STEAL_TIME. So it can't represent it is preempted > currently, right? Hmm, you're right. We can use bit 0 of struct kvm_steal_time's flags to indicate that pa...

On Thu, Jul 07, 2016 at 04:48:05PM +0800, Wanpeng Li wrote: > 2016-07-06 20:28 GMT+08:00 Paolo Bonzini <pbonzini at redhat.com>: > > Hmm, you're right. We can use bit 0 of struct kvm_steal_time's flags to > > indicate that pad[0] is a "VCPU preempted" field; if pad[0] is 1, the > > VCPU has been scheduled out since the last time the guest reset the bit. > > The guest can use an xchg to test-and-clear it. The bit can be > > accessed at any time,...

On Thu, Jul 07, 2016 at 04:48:05PM +0800, Wanpeng Li wrote: > 2016-07-06 20:28 GMT+08:00 Paolo Bonzini <pbonzini at redhat.com>: > > Hmm, you're right. We can use bit 0 of struct kvm_steal_time's flags to > > indicate that pad[0] is a "VCPU preempted" field; if pad[0] is 1, the > > VCPU has been scheduled out since the last time the guest reset the bit. > > The guest can use an xchg to test-and-clear it. The bit can be > > accessed at any time,...

Hi, I am currently running a 10 Node OCFS2 Cluster (version 1.3.9-0ubuntu1) on Ubuntu Server 8.04 x86_64. Linux n1 2.6.24-24-server #1 SMP Tue Jul 7 19:39:36 UTC 2009 x86_64 GNU/Linux The Cluster is connected to a 1Tera iSCSI Device presented by an IBM 3300 Storage System, running over a 1Gig Network. Mounted on all nodes: /dev/sdc1 on /cfs1 type ocfs2

Hi, How can I (through the manager interface) steal a call from one phone, and transfer it to another? Does asterisk provide for actions like this? It's a common action in Lucent systems it seems. Cheers, Ben -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/...

Hello, I'm familiar with Pickup/PickupChan for taking a ringing call, but does anyone know how a phone can "steal" an already answered call from another phone? Our users have decided that call parking is too long-winded and don't want to use that. For example: phone A calls phone B, phone B answers the call, phone C dials something to "steal" the call from B, and finally A and C are talking...

Support the vcpu_is_preempted() functionality under KVM. This will enhance lock performance on overcommitted hosts (more runnable vcpus than physical cpus in the system) as doing busy waits for preempted vcpus will hurt system performance far worse than early yielding. Use one field of struct kvm_steal_time ::preempted to indicate that if one vcpu is running or not. Signed-off-by: Pan Xinhui <xinhui.pan at linux.vnet.ibm.com> Acked-by: Paolo Bonzini <pbonzini at redhat.com> --- arch/x86/include/uapi/asm/kvm_para.h | 4 +++- arch/x86/kvm/x86.c | 16 ++++++++++++++++...

Hi, I have the following situation on my Asterisk PBX: 1) A (caller) is talking to B (called) 2) C (supervisor) want to "Steal/Pickup/Speak" with side B without hanging up A (possible put A on MusicOnHold) 3) C or B hangup the phone and then B start to ring, when B pickup the phone starts to speak with A again I tried with Asterisk-1.2.2 + bristuff-0.3.0-PRE-1i to use Steal() and StealChan() but that apps hangs up A...

...06412 free, 5932244 used, 1567428 buff/cache KiB Swap: 16449532 total, 16449532 free, 0 used. 26282624 avail Mem **iostat** [root at correo ~]# iostat -y 5 Linux 3.10.0-1062.12.1.el7.x86_64 (correo.binal.ac.pa) 07/03/2020 _x86_64_ (4 CPU) avg-cpu: %user %nice %system %iowait %steal %idle 0.05 0.00 0.05 0.05 0.00 99.85 Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn sda 0.00 0.00 0.00 0 0 dm-0 0.00 0.00 0.00 0 0 dm-1 0.0...

I just made a rails application that I plan to sell and dsitribute. I want to distribute it without having to worry about someone stealing the code and selling their own version. How do I do this? Is there a ruby obfuscator or anything that can keep someone from seeing the code? Thanks for your help. -- Posted via http://www.ruby-forum.com/.

Support the vcpu_is_preempted() functionality under KVM. This will enhance lock performance on overcommitted hosts (more runnable vcpus than physical cpus in the system) as doing busy waits for preempted vcpus will hurt system performance far worse than early yielding. Use one field of struct kvm_steal_time to indicate that if one vcpu is running or not. unix benchmark result: host: kernel 4.8.1, i5-4570, 4 cpus guest: kernel 4.8.1, 8 vcpus test-case after-patch before-patch Execl Throughput | 18307.9 lps | 11701.6 lps File Copy...