frustratingly slow box at 4GB, but not 1GB of memory

From: Todd Lewis (todd_at_qdsdirect.com)
Date: 02/08/04

  • Next message: Patrick Dung: "Re: OSU Open Source Lab Benchmark Challenge" 
    Date: Sat, 07 Feb 2004 20:57:22 -0600
To: freebsd-performance@freebsd.org

    Did you try compiling the kernel with the option

    options PAE

    Your at the 4 gig marker. It wouldn't supprise me if your system is having
    dificulty accessing the 4gigs. My rule of thumb is 1 gig of memory for every
    256k of on chip cache. P4 have 256k~512k 1~2g memory. Xenons have 512k, 2g
    for each processor. Xenon MP 512k to 1meg cache etc. etc.
      
    http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig-config.html

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