From a previous post, I noticed the SSD that I’m using in my server showed only a 50 MB/s write speed. That’s weird because the specs show around 145 MB/s. So, I decided to investigate some more. I removed the SSD from the zpool and did some dd tests on it. server# dd if=/dev/zero of=/dev/ada3 [...]
Note that the Samba shares resides in a ZFS pool with dedup turned on. Since the blocks that make up the file being sent are probably already on the pool, it’s not necessarily writing the block data to disk. Using the same method as last time: C:\Users\Poojan\Desktop>time_recv.bat 1 file(s) copied. Took: 112.75 sec. C:\Users\Poojan\Desktop>time_send 1 [...]
Looks basically like that other Corsair I bought a month ago. I basically bought another one so I can set up my FreeBSD root as a mirror of two 16 GB USB drives that are relatively fast for USB (even in a USB 2.0 port). This is in a USB 3.0 port: ———————————————————————– CrystalDiskMark 3.0.1 [...]
I’m about to upgrade to FreeBSD. While I csup the latest RELENG-9.0 branch, I’m looking at my Samba performance on 8.2. I’m measuring a copy of FreeBSD-8.2-RELEASE-i386-dvd1.iso to the Samba server using the following batch file (taken from here): @echo off set starttime=%TIME% set startcsec=%STARTTIME:~9,2% set startsecs=%STARTTIME:~6,2% set startmins=%STARTTIME:~3,2% set starthour=%STARTTIME:~0,2% set /a starttime=(%starthour%*60*60*100)+(%startmins%*60*100)+(%startsecs%*100)+ (%startcsec%) [...]
I ran iozone on many different ZFS pool configurations, to get an idea of which drives are best for L2ARC (cache) and the ZIL. I also wanted to get an idea of whether using gpart affects performance. The configurations shown in the tables below have the formation [cache]_[gpart/gnop]_[zil]. Where [cache] is the L2ARC type. [gpart/gnop] [...]