Haven <ha...@thehavennet.org.uk> writes: > I'm seeing higher results with cache=writeback. > > A few comparison runs show thats there's a decent bit of variation per run: > writeback: 41.1, 41.2, 39.3, 39.7, 39.1 > none: 42.2, 33.3, 35.2, 30.4, 30.6 > > I know these tests are not very conclusive but I'm not seeing a huge > difference between the two cache modes.
I think this is because the sheepdog driver doesn't use the value of the cache drive flag at all, if you take a look at block/sheepdog.c. Apparently only the drivers that layer on top of raw-posix.c or raw-win32.c for local device/file access use the relevant bits from bs->open_flags. Cheers, Chris. -- sheepdog mailing list sheepdog@lists.wpkg.org http://lists.wpkg.org/mailman/listinfo/sheepdog
