Messages in this thread | | | Date | Mon, 14 Feb 2005 10:38:22 -0800 | From | Mingming Cao <> | Subject | Re: [Ext2-devel] Re: Latest ext3 patches (extents, mballoc, delayed allocation) |
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Alex Tomas wrote:
> Good day all, > > I've updated the patchset against 2.6.10. A bunch of bugs have been > fixed and mballoc now behaves smarter a bit. Extents and mballoc > patches collects some stats they print upon umount. NOTE: they must > not be used to store important data. A lot of things are to be done. >
Thanks Alex, for the hard work.
> Please review. Any comments and suggestions are very welcome.
Will do.
> > > The followins crazy listing shows tiobench's results for SMP box: > > Random Reads > File Blk Num Avg CPU > Identifier Size Size Thr Rate (CPU%) Latency Eff > ---------------------------- ------ ----- --- ------ ------ --------- ----- > ext2 512 4096 1 119.05 40.37% 0.031 295 > ext3 512 4096 1 134.78 37.08% 0.028 363 > ext3rs 512 4096 1 25.18 8.377% 0.154 301
The throughput here is really weird. Reservation code does not touch read code path. I could imagine that it maybe change the disk layout and make a difference on sequential reads, but I am not sure how it will affect the random read. And this is happening on 1 thread and 4 threads, but for 2 threads, reservation case is the best. I will see if I could repeat the same results here.
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