[Dovecot] POP3 vs. IMAP Load/Memory usage in Dovecot 1.0.15

Stan Hoeppner stan at hardwarefreak.com
Tue Jul 12 09:59:37 EEST 2011


On 7/12/2011 1:12 AM, Rainer Frey wrote:
> 
> On 11.07.2011, at 17:03, Stan Hoeppner wrote:
> 
>> The R410 is a two socket Xeon box with max 2 x 6 core CPUs.  The 24 CPUs
>> you see is the result of HyperThreading being enabled.  I'd disable HT
>> if I were you, or those boxen mine.
> 
> Why?

It's a troubleshooting step.  HT can cause weird problems with some
systems/kernels.  It can also decrease performance with some workloads.
 As with anything, if it doesn't provide benefit, turn if off to reduce
complexity and potential problems.

-- 
Stan


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