Hi,
I plan to upgrade my fileserver from an Atom 390 to a Atom C2750 system. This also involves the fact that I won't have any PCI socket where I could plug in my good-old 3ware 9500S-4LP. I thought of getting a PCIe -> PCI bridge where I could still continue to use the 3ware.
I was wondering what the difference would be between a "3ware RAID-5" and a "ZFS RAID 5".
I'm still not sure if I really want to continue to use UFS2 but beside the benefits ZFS would give me I'm for now just comparing I/O performance.
- My 3ware has a BBU installed so write cache is enabled.
- There are four WD Caviar Green (WD10EADS) attached - so no big performance on the disk side
Did anyone made a performance comparision between a 3ware-RAID-5+writecache@UFS vs. a ZFS-RAID-5? I would be interested in some results (including CPU, memory, ZIL-setup information as those are important factors for ZFS)
I only have 3ware-RAID-5+writecache@UFS stats for my current system (Atom 390, 4GB of RAM)
I plan to upgrade my fileserver from an Atom 390 to a Atom C2750 system. This also involves the fact that I won't have any PCI socket where I could plug in my good-old 3ware 9500S-4LP. I thought of getting a PCIe -> PCI bridge where I could still continue to use the 3ware.
I was wondering what the difference would be between a "3ware RAID-5" and a "ZFS RAID 5".
I'm still not sure if I really want to continue to use UFS2 but beside the benefits ZFS would give me I'm for now just comparing I/O performance.
- My 3ware has a BBU installed so write cache is enabled.
- There are four WD Caviar Green (WD10EADS) attached - so no big performance on the disk side
Did anyone made a performance comparision between a 3ware-RAID-5+writecache@UFS vs. a ZFS-RAID-5? I would be interested in some results (including CPU, memory, ZIL-setup information as those are important factors for ZFS)
I only have 3ware-RAID-5+writecache@UFS stats for my current system (Atom 390, 4GB of RAM)
Code:
Version 1.96 ------Sequential Output------ --Sequential Input- --Random-
Concurrency 1 -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
nudel.salatschue 6G 104 99 68873 30 29166 20 256 99 118504 31 237.9 13
Latency 99691us 135ms 6204ms 47224us 76205us 285ms
Version 1.96 ------Sequential Create------ --------Random Create--------
nudel.salatschuesse -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 554 6 +++++ +++ 1069 8 554 6 +++++ +++ 278 2
Latency 239ms 44us 202ms 153ms 59us 180ms