2013/5/13 Greg <itooo@xxxxxxxxx>: > thanks a lot for pointing this out, it indeed makes a *huge* difference ! >> >> # dd if=/mnt/t/1 of=/dev/zero bs=4M count=100 >> >> 100+0 records in >> 100+0 records out >> 419430400 bytes (419 MB) copied, 5.12768 s, 81.8 MB/s > > (caches dropped before each test of course) What if you set 1024 or greater value ? Is bandwidth relative to the read ahead size? -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
