On Fri, 4 Feb 2005, Chuck Silvers wrote:

> after one of your earlier reports of the problem, I tried to reproduce it
> on a quadra 650, but everything was normal for me.

  I checked my amiga after I upgraded it to 2.0 last night, and the kernel
memory use was relatively low.  When I checked it today, it had increased
significantly.  I suspect the daily cron job could have caused this.

> if that's not it, other things to try would be:
>
>  (1) with the machine in the fully-leaked state, print out all the vm_page
>      structures and look at the uobject, uoffset and uanon fields and see if
>      there's any pattern to them.  pretty much all of them would have been
>      leaked by the time the machine wedges up.  you could write a little
>      C function to call from ddb and just print all the info to the serial
>      console.

  Is this similar to the info that pmap(1) can print?

amiga$ pmap -v -p0 -a
Start    End         Size  Offset   rwxpc  RWX  I/W/A Dev     Inode - File
00000000-004affff    4800k 00000000 rwxs- (rwx) 2/0/1 00:00       0 -   [ stack ]
004b0000-0052dfff     504k 004b0000 rwxs- (rwx) 2/0/1 00:00       0 -   [ uvm_aobj ]
0052e000-0252dfff   32768k 00000000 rwxs- (rwx) 2/0/1 00:00       0 -   [ kmem_map ]
0252e000-0352dfff   16384k 00000000 rwxs- (rwx) 2/0/1 00:00       0 -   [ pager_map ]
0352e000-03597fff     424k 0352e000 rwxs- (rwx) 2/0/1 00:00       0 -   [ uvm_aobj ]
03598000-03997fff    4096k 00000000 rwxs- (rwx) 2/0/1 00:00       0 -   [ exec_map ]
03998000-04997fff   16384k 00000000 rwxs- (rwx) 2/0/1 00:00       0 -   [ phys_map ]
04998000-04a17fff     512k 00000000 rwxs- (rwx) 2/0/1 00:00       0 -   [ mb_map ]
04a18000-04a8ffff     480k 04a18000 rwxs- (rwx) 2/0/1 00:00       0 -   [ uvm_aobj ]
04a90000-0528ffff    8192k 00000000 rwxs- (rwx) 2/0/1 00:00       0 -   [ ubc_pager ]
05290000-05869fff    5992k 05290000 rwxs- (rwx) 2/0/1 00:00       0 -   [ uvm_aobj ]
0586e000-058d1fff     400k 0586e000 rwxs- (rwx) 2/0/1 00:00       0 -   [ uvm_aobj ]
058d4000-058fffff     176k 058d4000 rwxs- (rwx) 2/0/1 00:00       0 -   [ uvm_aobj ]
05902000-05903fff       8k 05902000 rwxs- (rwx) 2/0/1 00:00       0 -   [ uvm_aobj ]
05908000-0590bfff      16k 05908000 rwxs- (rwx) 2/0/1 00:00       0 -   [ uvm_aobj ]
05916000-0591bfff      24k 05916000 rwxs- (rwx) 2/0/1 00:00       0 -   [ uvm_aobj ]
0591e000-05921fff      16k 0591e000 rwxs- (rwx) 2/0/1 00:00       0 -   [ uvm_aobj ]
05926000-05929fff      16k 05926000 rwxs- (rwx) 2/0/1 00:00       0 -   [ uvm_aobj ]
0592e000-05931fff      16k 0592e000 rwxs- (rwx) 2/0/1 00:00       0 -   [ uvm_aobj ]
05934000-0649ffff   11696k 05934000 rwxs- (rwx) 2/0/1 00:00       0 -   [ uvm_aobj ]
064a2000-064a3fff       8k 064a2000 rwxs- (rwx) 2/0/1 00:00       0 -   [ uvm_aobj ]
064a8000-064abfff      16k 064a8000 rwxs- (rwx) 2/0/1 00:00       0 -   [ uvm_aobj ]
064ae000-07827fff   19944k 064ae000 rwxs- (rwx) 2/0/1 00:00       0 -   [ uvm_aobj ]
07830000-0784ffff     128k 07830000 rwxs- (rwx) 2/0/1 00:00       0 -   [ uvm_aobj ]
089ba000-091fffff    8472k 00000000 ---s- (---) 2/0/1 00:00       0 -   [ anon ]
20000000-2102ffff   16576k 00000000 rwxs- (rwx) 2/0/1 00:00       0 -   [ pt_map ]
 total             139576k
amiga$ ps up0
USER PID %CPU %MEM VSZ   RSS TT STAT STARTED    TIME COMMAND
root   0  0.0 38.7   0 50656 ?? DKs  11:26PM 0:00.48 [swapper]

>
>  (2) add a bit of code to uvm_page{alloc,free}() that keeps a histogram of
>      the return addresses.  when the machine hangs, dump out all the counters
>      and see what doesn't match up.

--
Michael L. Hitch			mhitch@montana.edu
Computer Consultant
Information Technology Center
Montana State University	Bozeman, MT	USA