Date: Thu, 18 Sep 2003 18:40:57 -0400 From: Tom Limoncelli <tal@lumeta.com> To: freebsd-questions@freebsd.org Subject: How many nfsd's to run on a Xeon? Message-ID: <2BA835A4-EA29-11D7-809A-000A956888C8@lumeta.com>
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Is it possible to run too many nfsd's?
I remember back in 1992-1994 someone published a paper at Usenix (they
were from Sun or Auspex, I don't remember) saying that performance went
down if you ran more nfsd's than there were built-in process slots in
your CPU. So, a Sparc that had 16 hardware context slots, running more
than 15 nfsd's hurt performance because the CPU was thrashing.
Is there an equiv. setting for a Xeon processor?
--Tom
P.S. Here is the CPU data from dmesg from the host I'm trying to tune:
CPU: Intel(R) XEON(TM) CPU 2.20GHz (2199.76-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0xf24 Stepping = 4
Features=0x3febfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE
,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM>
Hyperthreading: 2 logical CPUs
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