Re: AFF_SPROC questions ..

In article <90gs85$fot$1@news.xmission.com>, Sinha, Niraj <niraj.sinha@BondBook.com> writes > >Hi Guys, > >I have following parameters : > >NUMCPUVPS 4 >AFF_SPROC 0 >AFF_NPROCS 0> AFF_NPROCS = the number of processor which you are using processor affinity on. In this case 0 so you are not using processor affinity AFF_SPROC = the start processor number. On some OS's you should not use CPU 0 so set. AFF_SPROC 1 AFF_NPROCS = Number of cpus in the machine -1 NUMCPUVPS = AFF_NPROCS >Now, does it mean that I am not using Processor affinity as AFF_NPROCS = >0 , or does it mean that I am binding to CPU 0 as defined on AFF_SPROC. >I am running IDS 7.31 FC6 on Digital Unix 5.0a. >The reason I am confused is because in the release notes, it says very >clearly that with digital unix AFF_SPROC should not be set to 0. > >Thanks, > >Niraj > >From the release notes : > > The Processor Affinity feature(ONCONFIG variables AFF_SPROC, >AFF_NPROCS) > that allows the pinning of CPU VPs to physical processors in a >multi-cpu > configuration is supported in this release. > > It is not recommended to set AFF_SPROC to 0. > CPU 0 is a master CPU and under Digital Unix, it is not recommended >to > bind processes to this processor. > > > -- David Williams