[ovirt-users] Re: Low Performance (KVM Vs VMware Hypervisor) When running multi-process application

what kind of CPUs are you using? Rav Ya <ravin.ya90(a)gmail.com&gt; schrieb am Di., 15. Sept. 2020, 16:58: > Hello Everyone, > Please advice. Any help will be highly appreciated. Thank you in advance. > Test Setup: > > 1. oVirt Centos 7.8 Virtulization Host > 2. Guest VM Centos 7.8 (Mutiqueue enabled 6 vCPUs with 6 Rx Tx Queues) > 3. The vCPUs are configured for host pass through (Pinned CPU). > > The Guest VM runs the application in userspace. The Application consists > of the parent process that reads packets in raw socket mode from the > interface and forwards then to child processes (~vCPUs) via IPC (shared > memory – pipes). *The performance (throughput / CPU utilization) that I > get with KVM is half of what I get with VMware.* > > Any thoughts on the below observations? Any suggestions? > > > - KVM Guest VMs degraded performance when running multi-process > applications. > - High FUTEX time (Seen on the Guest VM when passing traffic). > - *High SY: *System CPU time spent in kernel space (Seen on both > Hypervisor and the Guest VMs only when running my application.) > > > -Rav Ya > > _______________________________________________ > Users mailing list -- users(a)ovirt.org > To unsubscribe send an email to users-leave(a)ovirt.org > Privacy Statement: https://www.ovirt.org/privacy-policy.html > oVirt Code of Conduct: > https://www.ovirt.org/community/about/community-guidelines/ > List Archives: > https://lists.ovirt.org/archives/list/users@ovirt.org/message/QSEUE5VM4UC... >