Hi Christoph, hi list,

I don;t have ONE dir with that 11 million files, it's one dir with many
directories and a total of about 11 million files AND dirs! See output
below!

On 02/13/2012 10:16 PM, Christoph Hellwig wrote:

On Mon, Feb 13, 2012 at 07:48:58PM +0100, Richard Ems wrote:

quoted

I already updated to 3.2.4 and started the same "find dir" command again
that previously took 100 min to run. It has been running now for over 30
min ...

Should this "find" run time also improve ?

No, not by that change anyway.

It didn't improve, 100 min again.

quoted

Or will only unlink run time improve ?

Yes.

rm took about 110 min.

quoted

Do I have to mount the XFS partition with some new/old/special option?

I'd have to look into it in more detail.  IIRC you said you're using
RAID6 which can be fairly nasty for small reads.  Did you use the
inode64 mount option on the filesystem?

No, I did not use it, but I was thinking about and ran the script from
http://sandeen.net/misc/summarise_stat.pl and got as an example on /bin:

# /net/c3m/usr/local/software/XFS/summarise_stat.pl /bin/
      9  6.2% are scripts (shell, perl, whatever)
     65 44.8% don't use any stat() family calls at all
     61 42.1% use 32-bit stat() family interfaces only
      9  6.2% use 64-bit stat64() family interfaces only
      1  0.7% use both 32-bit and 64-bit stat() family interfaces

So I was not sure if I should use inode64 or not.



This are the times that the run took yesterday:

Mon Feb 13 19:14:07 CET 2012

+ wc -l
+ find 2012-02-13/
11377443

real    101m30.811s
user    0m17.365s
sys     1m4.632s


Mon Feb 13 20:55:38 CET 2012

+ wc -l
+ find 2012-02-13/ -type d
834591

real    103m52.686s
user    0m11.765s
sys     1m41.018s


+ wc -l
+ find 2012-02-13/ -type f
10539154

real    104m38.421s
user    0m19.905s
sys     1m47.551s


+ /bin/rm -i -rf 2012-02-13/

real    110m55.764s
user    0m13.401s
sys     4m3.115s

Tue Feb 14 02:15:05 CET 2012


Thanks again,
Richard


-- 
Richard Ems       mail: Richard.Ems@Cape-Horn-Eng.com

Cape Horn Engineering S.L.
C/ Dr. J.J. Dómine 1, 5º piso
46011 Valencia
Tel : +34 96 3242923 / Fax 924
http://www.cape-horn-eng.com

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