lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date:	Thu, 27 Jul 2006 11:30:54 -0700 (PDT)
From:	David Lang <dlang@...italinsight.com>
To:	Jan Kasprzak <kas@...muni.cz>
cc:	dean gaudet <dean@...tic.org>, Alan Cox <alan@...rguk.ukuu.org.uk>,
	linux-kernel@...r.kernel.org
Subject: Re: 3ware disk latency?

On Thu, 27 Jul 2006, Jan Kasprzak wrote:

> 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.

interesting, on the 9500 series cards I have it pops up a 'are you really sure, 
this is dangerous' warning, but it did allow me to turn on write caching (I've 
since received the batteries, but I did test it before that)

David Lang

> 	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
>
>
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists