[email protected] (Frank Wille) writes: >That's what I would expect! The extreme delay is gone. I can even add a >sync and it's still factor 20:
># time cp -Rp /etc /root; time sync > 0.05 real 0.00 user 0.04 sys > 1.14 real 0.00 user 0.00 sys ># time rm -rf /root/etc; time sync > 0.01 real 0.00 user 0.01 sys > 0.26 real 0.00 user 0.00 sys >This matches, or is even a little faster, than the old server. >Thanks. But you don't want to run '-o async', on a crash it likely corrupts your filesystem. RAID controllers (like cciss hardware) are usually pretty bad on synchronous writes unless they do have a persistent write cache (flash or RAM with battery).
