ZFS dedupe performance hit? (and implications for dedupe on 7110)
Reading the opensolaris forums, I notice a few people are seeing significant performance hits when turning on dedupe. (OpenSolaris Forums : [zfs-discuss] ZFS Dedup Performance ... and Re: [zfs-discuss] Troubleshooting dedup performance).
The "fix" appears to be loads of ram or an SSD for cache, though it looks like it needs work ([zfs-discuss] $100 SSD = >5x faster dedupe).
I'm building out a test vm now to see if I get similar issues.
a) Has anyone else run into this?
b) Bearing in mind the 7110s have no SSD, will it be sensible to turn on dedupe?