2 Replies Latest reply on Oct 2, 2010 5:25 AM by PeterUK

    Why random 100% write has less IOPS than sequential 100% write

    ramu_oc

      hi,

      I am trying to measure the Intel X25-v SSD performance in random 100% write and sequential 100% write.  I get less number of IOPS for random 100% writes when compared to sequential 100% write.

      I browsed the net and from there it sounds like "SSD has a write cache and all the write requests are combined to form the size equal to SSD's erase block size.".  Due to this random writes have less IOPS when compared to sequential IOPS.  Is my understanding correct ?

       

      Thanks you in advance.

       

      Regards,

      Ramu