Search results for query: affinity

...I do not want more than one C VM on a node when possible. I thought (PERHAPS MISTAKENLY) that an HA group was a 'purpose' construct, not a locality construct ... It felt like the wrong tool to use for conveying physical hardware affinity .... am I just totally misunderstanding the construct?

...always lie in managing idle states and NUMA. However, note that you can tune idle states on specific CPUs, and when combined with manual CPU affinity settings applied to the guest, this flexibility can help you achieve the desired outcome for VMs that need low latency. For what it's worth...

...ubuntu VM virtio scsi single 41us 24k iops ubuntu VM virtio scsi single + io thread + affinity 27us 35k iops ubuntu VM virtio block 31us 31k iops...

The VM will see them as all the same type of virtual core. You should not count hyper-threads as cores as they only give about 5%-25% extra performance in some workloads. You should not give many of your cores to a single VM and that increases latency and is not what a clustered enterprise...

...found so far. From my research, I understand that: Proxmox utilizes the Linux scheduler, which handles P/E cores quite well. Setting CPU affinity alone doesn’t prevent other processes from using the same cores, so hook scripts might be necessary to isolate cores effectively. However, I’m...

What is the purpose of this benchmark? unless all you want to do is show hero numbers, this doesnt simulate real world use- especially in circumstances where the storage is abstracted from the guest anyway (eg, raid.)

...and an io_thread. Identify the NUMA node for your NVMe device: Run: cat /sys/block/nvmeXn1/device/numa_node Assign CPU affinity via the GUI to pin the VM to the first 4 cores of the NUMA node where the NVMe device is attached. Doing this via the GUI implicitly sets affinity on the IO...

Hi @bbgeek17 1. For most of my testing, my vm had 10 vcpu, type host and i tested both with and without affinity and numa. when testing iothread-vq-mapping at high Q depths and jobs i assigned 40 cores with affinity and 16 iothreads. 2. system is otherwise idle 3. all obvious bios settings...

...valid concern. As a 10 year VMWare admin, I have seen this in action as a DB server gets a large query other VMs on the host will move away especially when a "host affinity" rule is set to keep the DB server on the host it's on. Is there any internal work going on the add this Feature? @bbgeek17

...! router openfabric 1 net 49.0000.0000.0002.00 exit ! end ---------------------------------------- File: /etc/network/if-up.d/thunderbolt-affinity ls: cannot access '/etc/network/if-up.d/thunderbolt-affinity': No such file or directory ----------------------------------------- grep...

pls., be so kindly and replace Polish comments to English for better overview. thx a lot :)

So, endlich Zeit gefunden. Tatsächlich war der "Trick" der mir nicht mehr einfiel folgender: Mit ceph-volume lvm list <OSD device> bekommt man alle Details über das Device Und da steht unter [db] ganz klar, welche Partition verwendet wurde. Das habe ich in dem IBM Artikel wiedergefunden...

...parm: resetwaittime:Wait time in (1-180s) after I/O timeout before resetting adapter. Default: 180s (int) parm: smp_affinity_enable:SMP affinity feature enable/disable Default: enable(1) (int) parm: rdpq_enable:Allocate reply queue in chunks for large queue depth...

Or the 3rd one where I tried it and came to the same conclusion as you did: It's a pain to manage by hand, especially with a lot of numa nodes on the hypervisor.

Solved from https://forum.proxmox.com/threads/hey-proxmox-community-lets-talk-about-resources-isolation.124256/ and using the pin function of script mention there. Summary: numa<N> lines don't result in vcpu pinning to correct host cpus on its own, you need to do this manually on the pve host...

...Mhh, it still doesnt work, i had to reread, its just a definition for the VM-Guest itself, which is pointless again. You have to use core affinity, which makes things again unmanagable if you have a lot of VM's. Managing Numa with Core Affinity/Pinning is the only way to make it work, but...

...VM shows only the base clock. Do a little benchmark with a current version of 7zip for example and you'll see it's all good. Edit: Your CPU affinity is set to hyper threading cores only. Is this on purpose? Your "real" cores are from 0 - 31. Everything above are those HT cores. You can check...

...a workstation and am trying to increase their clock speed to test out the feasibility of having my friends log in and use it. I used a CPU affinity to bind the VM to certain cores, and when i output the frequency, they are running at ~3.1 GHz, but in the Windows VM, it only says 2.2 GHz (The...

Hi PatrickD25, Here's where I would start: - Determine what NUMA node your HBA is connected to. - Set an affinity policy to bind your VCPUs to said NUMA node. - Make sure you have at least one free physical CPU core on the NUMA node. - Ensure that the disk scheduler for your block device on...

i thought the whole point of setting numa affinity was to skip setting cores affinity now you are doing both things which makes it a 100% more of a PITA? yup just tested can confirm the numa0 etc etc does nothing