pkernstock
Cadet
- Joined
- Nov 10, 2017
- Messages
- 8
Hi,
after a short conversation in the FreeNAS Facebook group I read that it is not the best idea turning AutoTune on. So to get a better idea of the reasons, pro and contra, I was starting to research... So what I know as of now:
Some details about my setup:
Thanks a lot in advance!
Regards,
Patrik
after a short conversation in the FreeNAS Facebook group I read that it is not the best idea turning AutoTune on. So to get a better idea of the reasons, pro and contra, I was starting to research... So what I know as of now:
- According to the documentation it should not be turned on
- This post by cyberjock dated in 2015 says that it's basically only recommended for "under-resourced systems" as it's limiting the ARC cache so the memory is not running out.
- However this post by cyberjock back in 2013 says that AutoTune is only recommended for systems with larger than 16 GB of RAM
- AutoTune python script
Some details about my setup:
- Intel Xeon E3-1220 v3 @ 3.10GHz (dedicated for FreeNAS)
- 32 GB ECC RAM
- 2 TB RAID10 (Tuned for performance; VM Storage)
- 8 TB RAID10 (Tuned for performance; VM Storage)
- 28 TB RAIDZ2 (Performance not critical; Datagrave for all kind of things: media, backup, etc)
- ZLOG and ZIL devices for each volume (SSD drives)
Thanks a lot in advance!
Regards,
Patrik