On Wed, Jun 11 2008, Alan D. Brunelle wrote: > Dmitri Monakhov wrote: > > Could it be that in the first case you will have merges, thus creating > fewer/larger I/O requests? Running iostat -x during the two runs, and > watching the output is a good first place to start. I think it's mostly down to whether a specific drive is good at doing 124kb writes + 4k seek (and repeat) compared to regular streaming writes. The tested disk was SATA with write back caching, there should be no real command overhead gain in those size ranges. -- Jens Axboe -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
