4 ms·
I wasn't using zfs at the time and I didn't do much comparison with CPU and IO, I used a wattage meter. I followed the FreeBSD guide (http://www.freebsd.org/doc
by danford 12y ago
I wasn't using zfs at the time and I didn't do much comparison with CPU and IO, I used a wattage meter. I followed the FreeBSD guide (http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/acpi-overview.html http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/ac...) and tried just about everything. My Linux box was running at about 9watts (idle) and freeBSD started out at around 18, but I got it down to about 12watts after making a lot of optimizations.
I think most of the difference is because FreeBSD is using older more stable software, and the Ubuntu server was running some of the latest software.
- takeda 12y agoDo you remember which FreeBSD version and which Linux kernel version was it? Linux had tickless kernel + CPU scaling for a while. FreeBSD is lagging in this aspect.
- profquail 12y agoThe FreeBSD kernel is tickless as of FreeBSD 10: http://www.freebsdnews.net/2013/09/20/freebsd-10s-new-technologies-and-features/ http://www.freebsdnews.net/2013/09/20/freebsd-10s-new-techno...