Are these speeds out of the norm?

All your general support questions for OpenZFS on OS X.

Re: Are these speeds out of the norm?

Postby lundman » Tue Oct 23, 2018 3:51 am

OK good, I suspected we called zil_commit too much, it might help a tiny fraction with writing small files as well, but probably not enough to measure.

It will do nothing for very large IOs though (like writing gigs to a single file)
User avatar
lundman
 
Posts: 505
Joined: Thu Mar 06, 2014 2:05 pm
Location: Tokyo, Japan

Re: Are these speeds out of the norm?

Postby e8wwv » Thu Dec 20, 2018 4:50 pm

Just wanted to add my two cents--the dec 18 master is overall much faster and consistent with TB+ writes.

What are the current arc size recommendations? I haven't done much experimenting yet other than with 'unlimited' / ~34GB and 1GB arc sizes. When not limited overall write speed is more consistent. When the arc size is limited the peak write speed is higher but there is some spiking. Seems best to leave it as it is at install.
e8wwv
 
Posts: 12
Joined: Sat Apr 21, 2018 3:38 am

Previous

Return to General Help

Who is online

Users browsing this forum: No registered users and 1 guest

cron