> Looking at the source code overview, it looks like > the compression happens "underneath" the ARC layer, > so by that I am assuming the uncompressed blocks are > cached, but I wanted to ask to be sure. > > Thanks! > -Andy > > Yup, your assumption is correct. We currently do > compression below the > ARC. We have contemplated caching data in compressed > form, but have not > really explored the idea fully yet. > > -Mark > _______________________________________________
Mark, Thanks for the quick response! I imagine the compression will still help quite a bit anyway, since ultimately there's a lot less data to write back to the disk. A compressed cache would be an interesting tuneable parameter - it would be great for these types of files, and also for some of the things we keep here in databases. (A lot of text/blobs and as such highly compressible). My colleagues and I are really impressed with the design and performance of ZFS - Keep up the good work! -Andy This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
