Can you please point me to where the diffs you refer to reside?
I'd definitely like to try them out.
Thank you,

Darrian
On Fri, May 16, 2008 at 3:09 AM, mickey  wrote:

quoted text
> the problem is not in the user land.

> the problem is in i386 pmap which abuses kmem_map that is there

> for malloc(9)s use and allocates pv_entries from it.

> this leads to enormous kmem_map fragmentation and unaccounted

> allocations that does not show up in the vmstat and as well leads

> to livelocks (sleeping on kmem_map) and out of space in kmem_map

> panics as well. there is a number of measures to remediate the

> situation proper

> - convert pv_entries allocations to pool (i have a diff if you wanna)

> - backend malloc w/ pool (filed in sendbug)

> - a number of uvm fixes (such as amap ops) that reduce fragmentation.

> cu

> --

>    paranoic mickey       (my employers have changed but, the name has remained)