On linux: following 110 seconds of extracting pkgsrc.tar, an immediately subsequent umount command takes ~10 seconds to complete. So, while interesting, this adjustment clearly can't explain the order of magnitude difference (~6.7 MB/s on Linux vs. ~0.7 MB/s on FreeBSD and NetBSD).
Thanks for the interesting suggestion, nevertheless; the thought does make me a bit wary of accidentally power cycling before sync finishes. Although, I suppose that is why we have journaling. Another interesting thing to note is how aggressively linux consumes ram when copying files. On Wed, Sep 11, 2013 at 3:10 AM, Jan Danielsson <jan.m.daniels...@gmail.com>wrote: > On 9/11/13 3:47 AM, Nick LaForge wrote: > > FWIW, I untaring pkgsrc.tar is just as slow in FreeBSD as in NetBSD. > > Perhaps Linux is more optimized for my (outdated and slow) compact flash > > based SSD. > > Try running "sync" just after untaring pkgsrc on the linux system. > > My debian system untar's pkgsrc suprisingly fast (it's a very slow > system compared to my netbsd system), but when I run sync (or umount) > afterwards it'll wait for quite a while before returning. > > /Jan > >
