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Adjusting the c states and power save settings in the BIOS worked for me. I've had this issue since I first got Ryzen 1800X well over a year ago - really couldn't figure out what was going on (didn't matter Windows or Linux) - now it's sweet for several weeks. Thanks for the tips. :D

I should add - I've moved back to EXT4 and the difference so far seems to be quite a lot. I would not be surprised at all to find out there is some kind of bug either in the code, or perhaps just in a default config somewhere that's causing this.

This sounds exactly like the behaviour I've been seeing. It started when I started using ZFS. I gave up.

I was reading up on swap just yesterday because I figure if memory is being paged via the host, it should be able to make it's own swap to supplement any required memory. Then I read (and I might agree) that swap in a guest can be managed better by a guest because it supposedly knows better...

Just saying I am reading your thread with interest. No replies doesn't mean people don't want to help, just that we might not know how to! I haven't started a Journey to LXC yet, (only one test container) but plan on doing it soon. So this is great understanding for me. Hopefully someone...

In spite of spending 25 years in IT and in infrastructure / applications space, somehow I never needed to manage large arrays. To that end, I've never bothered with IOPS calculations. However over the past few weeks due to performance issues, I've been reading up a lot about it. My 3 drive...

Hi guletz, thanks for the reply, I appreciate you didn't have to. Actually, I originally had a different thread title, which I changed to this more clickbait oriented one because I realised people love making solutions for others but don't seem to speak to general design principles that much...

For completeness running # zfs set sync=disabled rpool has made an incredible difference. However I still get IO delay of about 50-60% during file copy on a gigabit network with a three disk RAID0. Restoring a machine from backup still slows down the other machines enough to be very noticeable...

OK - depending on your work load and size of SSD-s you might want to up your time schedule then. In the disto's I've used it runs weekly, which may not be enough. If it isn't trimmed - you guessed it - performance suffers. A lot.

Sorry, this was the guy just before you about pveperf. You replied while I was replying to him.

openkiwi, basically there's two reasons - if you ever want to use ZFS and from what I've read using a consumer grade SSD will age very quickly with a VM workload. There is all sorts of information out there, all in pieces but in my small months running Proxmox I see this coming up over and...

According to the example at the very top of this thread, yes. Why not try it?

I wouldn't buy those from what I've read. Well depending on your config. I have two Samsung SSD's and have had to take them out.

I found adding an old Hitachi 320GB 10k RPM drive as a SLOG, improved my FSYNC by about 2x. Given how old that is, seems like a flash based device is warranted. Looking at an Intel S3700 - the only one I can find is 200GB unfortunately which is a bit big. Would love it to be M.2 based but oh...

So now I've disabled sync on my rpool because apparently if this speeds up fsyncs it means I would benefit from a fast external ZIL. Before root@proxmox:~# pveperf CPU BOGOMIPS: 114964.80 REGEX/SECOND: 2476069 HD SIZE: 5109.62 GB (rpool/ROOT/pve-1) FSYNCS/SECOND: 91.27...

Well, I did just finally find a helpful and comprehensive article. Pasting here so that others can obtain the benefit. https://icesquare.com/wordpress/how-to-improve-zfs-performance/ also this one https://icesquare.com/wordpress/zfs-performance-mirror-vs-raidz-vs-raidz2-vs-raidz3-vs-striped/

One thing that I didn't mention that I'm wondering about is I chose the smallest cluster size when setting up the ZFS Raid 0. Good for small files bad for big obviously.

I think it deletes it after it confirms the 4th backup is completed successfully from what I've read. I haven't gotten around to retesting this as I'm having so many performance issues with ZFS. Think I'll be going back to EXT4.

Hello all, for some time now I have been on a journey looking for a way of virtualising the workloads I toy around with at home. Ultimately I decided to shift from the free version of VMWare to proxmox because of the lack of features in VMWare for an unlicenced system and ended up on Proxmox...

You're lucky I'm getting IO delay of around 80% since moving to ZFS. It's a nightmare!