On Wed, Feb 24, 2010 at 1:20 AM, Noah McNallie <n...@n0ah.org> wrote:
> Well, i've found on openbsd without sofdeps enabled it will do this just > fine. But when enabling softdeps it will not. The 'uname' or 'ls' will take > quite a while to complete. Simplified explaination. Without softdeps, your tar does one disk write and waits for it to finish, then ls does one disk read and waits for it to finish. Continue until done. With softdeps, tar will fill the whole buffer cache with writes, not letting any other process run, then ls will try to read one block, wait for at least one write to finish before it can get a buffer, but in the mean time, tar will be awoken by those writes finishing and schedule even more writes before ls gets the chance to run. It's slightly stupid and there have been experiments with diffs to make this better, but there's no functionality in the tree to deal with this currently. > exponentially. Did I miss some evolution of the english language? I recently keep hearing abuse of this word everywhere. A multiplication by a constant was not an exponential function last time I did high school math. //art
