Date: Sat, 1 Jul 2006 06:32:26 +1000 From: Peter Jeremy <peterjeremy@optushome.com.au> To: Hans Petter Selasky <hselasky@c2i.net> Cc: freebsd-hackers@freebsd.org Subject: Re: contiguous memory allocation problem Message-ID: <20060630203226.GG734@turion.vk2pj.dyndns.org> In-Reply-To: <200606302029.28563.hselasky@c2i.net> References: <200605271102.19799.hselasky@c2i.net> <200606021556.00231.hselasky@c2i.net> <200606131939.23799.hselasky@c2i.net> <200606302029.28563.hselasky@c2i.net>
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--Yia77v5a8fyVHJSl Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, 2006-Jun-30 20:29:28 +0200, Hans Petter Selasky wrote: >I sometimes see that the USB driver is unable to allocate contiguous memor= y=20 >for itself. For example I noticed that FreeBSD was unable to allocate=20 >350kbytes of contiguous memory after that I had run "konqueror", the KDE w= eb=20 >browser and various other memory consuming applications for a while. I reported this about 18 months ago and I'm fairly certain you even contributed to the thread at the time. >Any comments? The latest concensus seems to be that the USB system should make use of the scatter-gather facilities in the hardware to avoid the need to allocate large contiguous memory chunks. iedowse@ had mostly finished implementing this in mid May. --=20 Peter Jeremy --Yia77v5a8fyVHJSl Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.3 (FreeBSD) iD8DBQFEpYpZ/opHv/APuIcRAjxVAKCTqQ0w/BhWCkGJ2Xg5fZE/MyALswCcDxw2 9FmvK4D82NGvlcZj1JE9+ng= =DFrr -----END PGP SIGNATURE----- --Yia77v5a8fyVHJSl--
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