Mount with NoATime.

[wese]

Hi,

I'm testing proxmox now for a few days to see if it fits our needs.

And so fare the only thing may helps to improve the io performance is to set the noatime mount flag.

Actually it's no problem to do it on the fly, which we already did, but just wanted to to let you guys know.

mount -o remount,noatime /
mount -o remount,noatime /var/lib/vz

/etc/fstab

/dev/pve/root / ext3 errors=remount-ro,noatime 0 1
/dev/pve/data /var/lib/vz ext3 defaults,noatime 0 1

Keep it up.

- wese

 

[xminer]

Hello,

Researching using noatime to get a little better performance for my local disks (RAID1)... is there any down side to using noatime?

-xminer

 

[wese]

Hi,
Using noatime stops your filesystem from recording the last-time-accessed for each and every file.
It may be interessting in case of a system breach, or other debugging, other than that, its no use.
I never ever looked at the last-access-time.

- René

 

[jekader]

some email software checks access time to determine wether the mail is new or not, so there's a chance openVZ guests with such applications will start to behave funny.