Shawn Heisey [s...@elyograg.org]: > This is awesome! Concrete info is better than speculation.
Thank you. > I think it might be time to split the SSD section of > SolrPerformanceProblems into its own wiki page and expand it. That might be a good idea. It would also be interesting to try and measure a mixed read/write environment. > Have you come across any way yet to have RAID1 with TRIM support, > especially on Linux? RAID10 would be even better. This is the hurdle that > keeps me from getting serious about SSD. According to Wikipedia there is some support, but I do not know the details http://en.wikipedia.org/wiki/TRIM#RAID_issues Searching a bit, it seems that TRIM is supported with lvm, which makes it possible to have a single logical volume spanning multiple SSDs. This does not have the bulk-speed benefit of a striped RAID-0 setup, but the TRIM-win might make up for that. It would be interesting to see how fast (or slow) SSD performance degenerates when updating a Solr index. Having large bulk writes should be quite agreeable with SSDs. Regards, Toke Eskildsen
