Messages in this thread | | | Date | Thu, 9 Dec 1999 15:16:27 -0500 | From | Paul Ho <> | Subject | Re: Slow lmbench on IBM Netfinity |
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At 07:52 PM +0100 12/09/99, Ragnar Kjørstad wrote: >On Thu, Dec 09, 1999 at 01:43:19PM -0500, Paul Ho wrote: >> Thanks for the reply. /proc/cpuinfo show 2 cpu with reasonable BogoMIPS. >> However, 2nd cpu show up as processor 2. i.e. I have processor 0 and 2. >> Is this normal? > >I'm not sure. our SMB machine show up with processor 0 and 1... > >Even if the mips indicator was normal, it could still be mtrr-releated >(I guess). > >>From Configure.help: > > Saying Y here also fixes a problem with buggy SMP BIOSes which only > set the MTRRs for the boot CPU and not the secondary CPUs. This can > lead to all sorts of problems. > > >I'd suggest you try with MTTR enabled - if it doesn't help you should >reply to your own message saying your processors are numbered 0 and 2. >Probably someone else can tell you if it's ok or not (I'm not a hardcore >kernel-hacker).
MTRR is on. /proc/mtrr show: reg00: base=0x00000000 ( 0MB), size= 256MB: write-through, count=1
is this looks normal?
I suspect memory problem because of the high Mmap Latency, Prot Fault and Page Fault in lmbench:
>File & VM system latencies in microseconds - smaller is better >-------------------------------------------------------------- >Host OS 0K File 10K File Mmap Prot Page > > Create Delete Create Delete Latency Fault Fault >--------- ------------- ------ ------ ------ ------ ------- ----- ----- >i686-linu Linux 2.2.13- 148 29 320 42 191531 20 7.4K
Paul
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