On Tue, Sep 02, 2014 at 12:22:33PM +0200, Vladimír Čunát wrote: > On 09/02/2014 07:30 AM, Michael Raskin wrote: > >So all in all: it writes to a file in a way that ensures fragmentation, > >then reads it randomly in small chunks, reads most of it, and ends up > >way slower than just reading the entire file… > > Could it be a bad interaction with COW of btrfs? I've also had > problems with journalctl needing huge amount of time. I do have the > autodefrag option.
I set systemd log files to nocow. Yet the reading of the journal does so many seeks, that it's slow everywhere unless the journal is cached. I guess that spinning disks are unsupported. :) _______________________________________________ nix-dev mailing list [email protected] http://lists.science.uu.nl/mailman/listinfo/nix-dev
