Jared D. McNeill wrote:

> Quoting enami tsugutomo <enami@sm.sony.co.jp>:
> 
>> With appended patch, elapsed time to extract mozilla source is not so
>> slow with comparing to 1.5 as listed below.
> 
> 
> Do you think you could try the ffs_dirpref() patch I posted here yesterday with 
> this and post numbers for that (with your patch) as well?

I did it on Tbird-1G and the test result was amazing.
Unfortunately, however, neither of those patches made kernel
compiling faster. Anyway, I'm so pleased with this result. :)
(It also showed softdep helped untar performance boost)

-current:
$ time tar xfz sys.tar.gz
2.3u 4.6s 3:40.99 3.1% 0+0k 4659+39230io 0pf+0w

-current with Jaromir's pipe:
$ time tar xfz sys.tar.gz
2.3u 3.8s 3:27.45 2.9% 0+0k 5002+38995io 5pf+0w

-current with pipe and Jared's ufs_dirpref:
$ time tar xfz sys.tar.gz
2.5u 3.5s 2:01.87 5.0% 0+0k 606+34693io 32pf+0w

-current with pipe, ufs_dirpref and enami's ufs_inode:
$ time tar xfz sys.tar.gz
2.3u 3.4s 1:27.08 6.6% 0+0k 487+34657io 0pf+0w

-current with pipe, ufs_dirpref, ufs_inode and softdep:
$ time tar xfz sys.tar.gz
2.4u 3.3s 1:12.53 7.8% 0+0k 653+5108io 32pf+0w

Jun-Young