Eric Sandeen wrote: > Alex Tomas wrote: >> please, try the patch attached. > > Looks quite a bit better: > > http://people.redhat.com/esandeen/seekwatcher/ext4-alex.png > http://people.redhat.com/esandeen/seekwatcher/ext4-alex-ext4-dd-write.png > http://people.redhat.com/esandeen/seekwatcher/ext4-alex-ext4-xfs-dd-write.png > > It is much less fragmented, although still not exactly the nice linear > allocation I'd expect from a single threaded large write on a fresh fs... Note, we're still getting out-of-order extents, too: First block: 122880 Last block: 2694143 Discontinuity: Block 7424 is at 101376 (was 130303) Discontinuity: Block 28160 is at 133120 (was 122111) Discontinuity: Block 58368 is at 188416 (was 163327) Discontinuity: Block 66304 is at 180224 (was 196351) Discontinuity: Block 73984 is at 172032 (was 187903) Discontinuity: Block 81664 is at 167936 (was 179711) Discontinuity: Block 84736 is at 221184 (was 171007) Discontinuity: Block 92416 is at 212992 (was 228863) Discontinuity: Block 100096 is at 204800 (was 220671) Discontinuity: Block 107776 is at 198656 (was 212479) ... I'm trying to find time to look into this but other things are knocking at my door so no promises... -Eric - To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
