ZFS Help me track down random CRAZY SLOW IO

[SirDice]

Neither pciconf -lv | grep -i virt

pciconf(8) should show them, if they exist:

# pciconf -l | grep virt
virtio_pci0@pci0:0:3:0: class=0x020000 card=0x00011af4 chip=0x10001af4 rev=0x00 hdr=0x00
virtio_pci1@pci0:0:5:0: class=0x010000 card=0x00021af4 chip=0x10011af4 rev=0x00 hdr=0x00
virtio_pci2@pci0:0:6:0: class=0x00ff00 card=0x00051af4 chip=0x10021af4 rev=0x00 hdr=0x00

grep -i virtio /boot/loader.conf

You're not going to find them there, these drivers are already builtin on the GENERIC kernel.

Am I looking at the wrong place?

Look at dmesg(8) output, specifically look for detection of disks and controllers.

 

[RobCrowston]

Can we see the output of dmesg ?

 

[zsb]

Hi everyone,

Sorry for the late answer but I suddenly got a maintenance notification on Thursday evening from my hosting provider and since Friday morning the IO performance is great. The test 'dd' command runs in 1-2 sec, 'vi' opens lightning fast, etc. etc.

I just wanted to wait a couple of days to make sure it remains as it is.

So in short, this was an issue on the hosting provider side.

Thanks a lot for your time and help!