Re: SMP boards with VIA 694X

[Vladimir G Ivanovic <vladimir acm org>]

I get

/dev/sda:
 Timing buffer-cache reads:   128 MB in  0.96 seconds =133.33 MB/sec

on my CUV4X-DLS (dual PIIIs 1 GHz) without any tweaking with RH7.1

--- Vladimir

Vladimir G. Ivanovic                    http://www.leonora.org/~vladimir
2770 Cowper St.                                         vladimir acm org
Palo Alto, CA 94306-2447                                 +1 650 678 8014

"JS" == Juha Saarinen <juha saarinen org> writes:

  JS> :: I've seen motherboards that support two CPUs available with
  JS> this :: chipset from several vendors including :: ASIS :: Gigabyte
  JS> :: ABIT :: MSI :: Tyan :: :: Their prices are attractive - around
  JS> the price of a Pentium III 866 :: here - for the low-cost (no
  JS> SCSI, no LAN) versions. :: :: Have any people here had any
  JS> experience with these? I'm keen to have :: SMP, and there's no
  JS> competition here in their price range. :: :: It would upgrading my
  JS> Pentium II system, currently running RHL 7.1.

  JS> Yes! Avoid, avoid, avoid!

  JS> I've got a Tyan Tiger 133 here that I'm trying to bash into shape
  JS> with RHL 7.1. It had problems with USB under Win2K, and couldn't
  JS> do UDMA-66 until a BIOS upgrade plus a VIA's 4-in-1 4.31 drivers. 
  JS> Never worked with my GeForce 2GTS either.

  JS> Another issue is the limited memory bandwidth. Even with PC 133
  JS> SDRAM, you'll get worse throughput than a 440BX board. I've tried
  JS> tweaking the box with setpci to enable 4-way memory interleaving,
  JS> but it's still not very good.

  JS> Check this:

  JS> /dev/hda:
  JS>  Timing buffer-cache reads: 128 MB in 1.32 seconds = 96.97 MB/sec

  JS> This is with setpci tweaks, on a dual 500MHz P3 with 192MB of good
  JS> PC100 SDRAM.

  JS> My P2-400 (440BX) beats it easily, without any tweaks:

  JS> /dev/hdb:
  JS>  Timing buffer-cache reads: 128 MB in 1.17 seconds =109.40 MB/sec



  JS> -- Juha





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