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From:Dan Nelson Date:July 20 1999 10:34pm
Subject:Re: Dual Processor
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In the last episode (Jul 20), sinisa@stripped said:
> Stephen Roderick writes:
> > A quick question. I am setting up a db server on FreeBSD, with a
> > RAID 0+1 for maximum performance and redundancy. If I install 2
> > processors will I see a big improvement in performance (being
> > multi-threaded) or will I really need to run two seperate processes
> > on different ports?
> > 
> > The tests that we have run are bound by disk IO since we haven't
> > purchased the new hardware yet. We just want to make sure that we
> > will actually benefit from the dual processors before we buy them.
> 
> You will profit from obtaining 2 processors, if CPU was a bottleneck.
> 
> Regarding your first question, MySQL is fully multi-threaded, as you
> know, so do not run 2 servers, please !!

Multi-threaded != multi-processing.  FreeBSD's thread implementation is
user-level, so the entire mysql process would run on one CPU.

	-Dan Nelson
	dnelson@stripped
Thread
Dual ProcessorStephen Roderick20 Jul
  • Re: Dual ProcessorScott Hess20 Jul
  • Dual Processorsinisa20 Jul
    • Re: Dual ProcessorDan Nelson21 Jul
      • Re: Dual ProcessorStephen Roderick21 Jul
        • Re: Dual ProcessorOrlando Andico21 Jul
          • Re: Dual ProcessorFred Read21 Jul
            • Re: Dual Processorsinisa21 Jul
            • Re: Dual ProcessorOrlando Andico21 Jul
              • Re: Dual ProcessorPatrick Greenwell21 Jul
                • Re: Dual ProcessorOrlando Andico21 Jul
                  • Re: Dual ProcessorPatrick Greenwell21 Jul
                    • Re: Dual ProcessorOrlando Andico21 Jul
                      • Re: Dual ProcessorStephen Roderick21 Jul
                      • Re: Dual ProcessorPatrick Greenwell21 Jul
      • Re: Dual Processorsinisa21 Jul
        • Re: Dual ProcessorVivek Khera21 Jul
          • Re: Dual Processorsinisa22 Jul
            • Re: Dual ProcessorEric Peters22 Jul
        • Re: Dual ProcessorDan Nelson21 Jul