Re: nfs slowdown since 2.5.4

[Matthias Welk <welk@fokus.gmd.de>]

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Trond Myklebust wrote:

>On Tuesday 04 June 2002 19:16, Matthias Welk wrote:
>  
>
>>On Tuesday 04 June 2002 18:48, Trond Myklebust wrote:
>>    
>>
>>>On Tuesday 04 June 2002 17:56, Matthias Welk wrote:
>>>      
>>>
>>>>To get more info about this problem I compared the compile time and the
>>>>nfs traffic between 2.4.18-4 and 2.5.20 on a RedHat 7.3 system.
>>>>The sources (mosfet-liquid0.9.5.tar.gz - KDE style) were located on the
>>>>local disc and the libraries were linked over nfs.
>>>>The results attached to this mail show the big difference !
>>>>        
>>>>
>
>Does the appended patch make a difference
>

Yes, the lookup rate increased 1/3 compared to the unpatched version.
I have attached updated results of the build process, because there was a
mistake for the 2.4.18 version.

Now the addition to my last mail:

NFS-Server:        Auspex NS3010
NFS-Filesystem:    Auspex-specific (FastFLO Journaling File System)

Greetings, Matthias
---------------------------------------------------------------
From: Matthias Welk                   office:  +49-30-3463-7272
      FHG Fokus                       mobile:  +49-179- 1144752
      Kaiserin-Augusta-Allee 31       fax   :  +49-30-3463-8672
      10589 Berlin                    email : welk@fokus.fhg.de
----------------------------------------------------------------


[-- Attachment #2: build_2.4.18.txt --]
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#time to build on a RedHat 7.3 system with 2.4.18-4

real	1m8.473s
user	0m51.510s
sys	0m7.800s

# packets:	7757
lookup:		2952
getattr:	175
readdir:	72
readlink:	119
read:		567
frag:		4144
other:		0

[-- Attachment #3: build_2.5.20.txt --]
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#time to build on a RedHat 7.3 system with 2.5.20

real    1m48.509s
user    0m51.320s
sys     0m12.790s

# packets:	149859
lookup:		143791
getattr:	1273
readdir:	24
readlink:	119
read:		828
frag:		4232
other:		0

[-- Attachment #4: build_2.5.20_patched.txt --]
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#time to build on a RedHat 7.3 system with 2.5.20 patched

real    2m11.262s
user    0m50.960s
sys     0m14.260s

# packets:	234552
lookup:		229030
getattr:	728
readdir:	24
readlink:	119
read:		827
frag:		4231
other:		0