contiguous memory allocation problem
peterjeremy at optushome.com.au
Fri Jun 30 20:32:35 UTC 2006
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 memory
>for itself. For example I noticed that FreeBSD was unable to allocate
>350kbytes of contiguous memory after that I had run "konqueror", the KDE web
>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.
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.
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