[lkml]   [2007]   [Mar]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectWhy is NCQ enabled by default by libata? (2.6.20)
    Without NCQ, performance is MUCH better on almost every operation, with 
    the exception of 2-3 items.

    /usr/sbin/bonnie++ -d /x/bonnie -s 7952 -m p34 -n 16:100000:16:64 > run.txt;

    # Average of 3 runs with NCQ on for Quad Raptor ADFD 150 RAID 5 Software RAID:
    # Average of 3 runs with NCQ off for Quad Raptor ADFD 150 RAID 5 Software RAID:

    In general, for networking, etc, the kernel chooses 'optimized' defaults,
    therefore, I was curious why is NCQ enabled by default?

    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to
    More majordomo info at
    Please read the FAQ at

     \ /
      Last update: 2007-03-24 17:41    [W:0.043 / U:0.088 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site