Re: Scalability requirements for sysv ipc

[Manfred Spraul]

Hi all,

I've revived my Dual-CPU Pentium III/850:
I couldn't notice a scalability-problem (two cpus are around 190%, but 
just the normal performance of 2.6.25-rc3 is abyssimal, 55 to 60% slower 
than 2.6.18.8:

psem    2.6.18  2.6.25  Diff [%]
1 cpu   948.005 398.435 -57,97
2 cpus  1.768.273       734.816 -58,44
Scalability [%] 193,26   192,21
                      
pmsg    2.6.18  2.6.25  Diff [%]
1 cpu   821.582 356.904 -56,56
2 cpus  1.488.058       661.754 -55,53
Scalability [%] 190,56   192,71

Attached are the .config files and the individual results.
Did I accidentially enable a scheduler debug option?

--
   Manfred

Attachment: bench.tar.gz
Description: GNU Zip compressed data