4 ms·

Let's see how this works out. It's probably better and more stable than btrfs but this is not complicated... ZFS on Linux had issues with ARC (especially fast

• AstralStorm 11y ago
  Additional problem is that in-kernel latencies of both btrfs and ZFS are on the high end. Essentially a show stopper for professional audio work and maybe some kinds of video streaming. Trying to completely escape disk IO in those uses is very limiting. A comparable solution using LVM and/or mdraid with ext4 on top has much better latency behavior. Sorry for no benches for you, but feel free to run a quick check using latencytop and ftrace. Phoronix has some performance comparisons if you want them.
  • semi-extrinsic 11y ago
    > Essentially a show stopper for professional audio work (...). Trying to completely escape disk IO in those uses is very limiting. Could you expand on that? I mean, an hour of mono uncompressed 192 kHz/24bit audio is almost exactly 2 GB. Compared to professional audio equipment, 128 GB of RAM isn't very expensive ( < $2000), and that would let you keep 64 one-hour maximum-def tracks in memory. Why do you need to read from the disk with any frequency?