Messages in this thread | | | Date | Thu, 27 Jul 2006 14:11:37 +0200 | From | Jan Kasprzak <> | Subject | Re: 3ware disk latency? |
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dean gaudet wrote: : my suspicion is the 3ware lacks any sort of "fairness" in its sharing of : buffer space between multiple units on the same controller. and by : disabling the write caching it limits the amount of controller memory that : the busy disk can consume.
Hmm, do you have a battery backup unit for 9550sx? I don't, and the 3ware BIOS does not even allow me to enable write caching without it. So I don't think the write caching on the controller side is related to my problem.
I have been able to improve the latency by upgrading the firmware to the newest release (wow, they even have a firmware updating utility for Linux!).
-Yenya
-- | Jan "Yenya" Kasprzak <kas at {fi.muni.cz - work | yenya.net - private}> | | GPG: ID 1024/D3498839 Fingerprint 0D99A7FB206605D7 8B35FCDE05B18A5E | | http://www.fi.muni.cz/~kas/ Journal: http://www.fi.muni.cz/~kas/blog/ | > I will never go to meetings again because I think face to face meetings < > are the biggest waste of time you can ever have. --Linus Torvalds < - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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