Comment on Proxmox SMB Share not reaching full 2.5Gbit speed
MangoPenguin@lemmy.blahaj.zone 11 months ago
Have you benchmark the disk locally directly on the proxmox host? Need to figure out if this is an IO limitation, CPU limitation, or something else.
Pete90@feddit.de 11 months ago
Good point. I used fio with different block sizes:
fio --ioengine=libaio --direct=1 --sync=1 --rw=read --bs=4K --numjobs=1 --iodepth=1 --runtime=60 --time_based --name seq_read --filename=/dev/sda4K = IOPS=41.7k, BW=163MiB/s (171MB/s) 8K = IOPS=31.1k, BW=243MiB/s (254MB/s) IOPS=13.2k, BW=411MiB/s (431MB/s) 512K = IOPS=809, BW=405MiB/s (424MB/s) 1M = IOPS=454, BW=455MiB/s (477MB/s)
I’m gonna be honest though, I have no idea what to make of these values. Seemingly, the drive is capable of maxing out my network. The CPU shouldn’t be the problem, it’s a i7 10700.
MangoPenguin@lemmy.blahaj.zone 11 months ago
Basically you’re getting 477MB/s for a sequential read, which is spot on for a SATA SSD.
What size are the files you were transferring when you only got 150Mbps? Also did you mean Mb/s or MB/s? There’s an 8x difference between the two.
Pete90@feddit.de 11 months ago
I meant mega byte (I hope that’s correct I always mix them up). I transferred large videos files, both when the file system was zfs or lvm, yet different transfer speeds. The files were between 500mb to 1.5gb in size
NeoNachtwaechter@lemmy.world 11 months ago
ZFS compression is costing some CPU for sure. How many cores/threads does your CPU have?
And if it is mostly video files: they are already compressed heavily, so you don’t gain anything with another layer of compression.