On 07/24/2013 02:22 PM, Matthew Eaton wrote: > Hi guys, > > I'm using this simple trim test on a raw SSD but getting very low > performance. Bandwidth seems to be tied to the block size. Am I > doing something wrong? What kernel are you on? This looks like a missing unplug issue. If you run a blktrace for a few seconds while the test is ongoing, the output of blkparse should reveal if you are seeing timer unplugs. -- Jens Axboe -- To unsubscribe from this list: send the line "unsubscribe fio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
