[OpenAFS] Extremely poor write performance.

Robin Yamaguchi rhy@physics.ucsb.edu
Thu, 16 Jan 2003 17:43:21 -0800 (PST)


>>>>>>>> Conclusion: No effect.

I concluded the same thing.  The load average on my client hit a record 
high 30+.  Rubino, I am the same situation you are, and relate completely 
to your posts.

Any suggestions for a memory cache size on a client with 256 megs of ram?  
I will play with this more tomorrow.

-Robin 

> > Practically speaking: What happens if you drastically 
> > increase the number of afsd daemons (to say 300 instead 
> > default of 3 for "Medium" in the /etc/sysconfig/afs file)?
> > 
> > How does this affect the "delete 10000 small files" performance? 
> > 
> > Robin and Rubino, could you try this and report, please ? 
> 
> ############### daemons = 300
> 
> Version  1.03       ------Sequential Output------ --Sequential Input-
> --Random-
>                     -Per Chr- --Block-- -Rewrite- -Per Chr- --Block--
> --Seeks--
> Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  /sec
> %CP
> i44pc56.info.u 128M  2128  58  4282  12  3124  13  3265  86 29197  45 495.0
> 5
>                     ------Sequential Create------ --------Random
> Create--------
>                     -Create-- --Read--- -Delete-- -Create-- --Read---
> -Delete--
>               files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec
> %CP
>                  16    99  41   812  84   167  36    90  37   344  47   159
> 22
> i44pc56.info.uni-karlsruhe.de,128M,2128,58,4282,12,3124,13,3265,86,29197,45,
> 495.0,5,16,99,41,812,84,167,36,90,37,344,47,159,22
> 
> >>>>>>>> Conclusion: No effect.
>