On 7/17/2011 3:12 AM, Pol Hallen wrote: > hello and thanks for the reply :-) > > dd if=/dev/zero of=test bs=4096 count=262144 > 262144+0 records in > 262144+0 records out > 1073741824 bytes (1.1 GB) copied, 31.3475 s, 34.3 MB/s > > I've 8Gb ddr3 of ram Then you have multiple problems causing poor performance. Now is the time for you to post your hardware configuration, drive model number(s), mdadm config, and filesystem. You should have done all of this in your initial post. You've been on this list long enough to have known of the WD Green sector alignment issue and avoided it, and to know better than to run performance tests while an array is still in its initial sync. Thus I initially assumed your problem was merely the insane dd block size. -- Stan -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
