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Bizarre kernel memory usage
Hi,
As a followup, I've been trying to compile kernels with KMEMSTATS. Later,
I also tried DIAGNOSTIC and DEBUG, and something interesting happened - on
my Amiga 4000, with KMEMSTATS and DEBUG, the system is now well behaved -
even after compiling for a couple of days, kernel usage has hovered around
35 megs for a system with 128 megs.
Now here's the strange thing - for mac68k, a kernel with DIAGNOSTIC,
DEBUG, and KMEMSTATS will boot on one Quadra 605 which has 36 megs of
memory, but not on another Quadra 605 which has 132 megs of memory. Both
systems have identical System 7.6.1 partitions, identical bootloaders, and
both have been working fine for months. The system with 132 megs says this
in the boot window:
transparent = 1
Boot error: This kernel is not in a format which the booter can execute.
I double checked the kernel, recopied it, and it's not a bad copy.
Anyway, here's vmstat -m from the machine with 36 megs (right before it
crashed). It said kernel usage was 32 megs (!)
Memory statistics by bucket size
Size In Use Free Requests HighWater Couldfree
16 404 108 49679 1280 0
32 180 76 42859 640 0
64 423 729 41983 320 1010
128 198 26 9005 160 0
256 85 11 10027 80 0
512 39 9 322 40 0
1024 254 10 4403 20 0
2048 19 5 3432 10 0
4096 12 3 16 5 0
8192 2 0 3 5 0
16384 8 0 123 5 0
65536 1 0 1 5 0
131072 1 0 1 5 0
Memory usage type by bucket size
Size Type(s)
16 VM swap, UVM aobj, UVM amap, ifaddr, namecache, soname, pipe,
proc,
in_multi, ip_moptions, UFS mount, routetbl, temp, pcb, devbuf,
exec,
kernfs mount, NDP
32 VM swap, UVM amap, ifmedia, ether_multi, ifaddr, soname,
sysctldata,
fragtbl, routetbl, temp, pcb, devbuf
64 UVM amap, vnodes, lockf, prop, session, in_multi, routetbl,
temp, pcb,
devbuf, exec, NFS diroff, NFS req, NDP
128 VM swap, UVM amap, ifaddr, soname, ttys, prop, sysctlnode, cred,
proc,
routetbl, temp, devbuf, kevent, inodedep, NDP
256 VM map, UVM amap, ifaddr, vnodes, subproc, proc, routetbl, temp,
devbuf, exec, kevent, newblk, NFS daemon, NFS diroff
512 UVM amap, ifaddr, mount, proc, UFS mount, temp, pcb, devbuf,
exec,
ioctlops, NFS mount, NFS srvsock
1024 UVM aobj, UVM amap, ttys, sysctlnode, temp, devbuf, exec, NQNFS
Lease
2048 UVM amap, ifaddr, namecache, sysctlnode, in_multi, UFS mount,
temp,
devbuf, exec, pagedep
4096 UVM amap, sysctlnode, UFS mount, temp, devbuf
8192 namecache, sysctlnode, MSDOSFS mount
16384 namecache, sysctlnode, UFS mount, temp, devbuf, UFS quota,
inodedep,
NFS node, ISOFS mount
65536 temp
131072 devbuf
Memory statistics by type Type Kern
Type InUse MemUse HighUse Limit Requests Limit Limit Size(s)
VM swap 5 1K 1K 5530K 5 0 0 16,32,128
VM map 4 1K 1K 5530K 4 0 0 256
UVM aobj 2 2K 2K 5530K 2 0 0 16,1024
UVM amap 761 63K 71K 5530K 123823 0 0
16,32,64,128,256,512,1024,2048,4096
ifmedia 1 1K 1K 5530K 1 0 0 32
ether_multi 5 1K 1K 5530K 5 0 0 32
ifaddr 33 9K 9K 5530K 33 0 0
16,32,128,256,512,2048
mount 4 2K 2K 5530K 7 0 0 512
vnodes 45 8K 57K 5530K 854 0 0 64,256
lockf 2 1K 1K 5530K 52 0 0 64
namecache 4 27K 27K 5530K 4 0 0
16,2048,8192,16384
soname 2 1K 1K 5530K 97 0 0 16,32,128
ttys 336 218K 218K 5530K 336 0 0 128,1024
pipe 0 0K 1K 5530K 2 0 0 16
prop 2 1K 1K 5530K 2 0 0 64,128
sysctldata 0 0K 1K 5530K 1 0 0 32
sysctlnode 46 77K 77K 5530K 65 0 0
128,1024,2048,4096,8192,16384
cred 8 1K 1K 5530K 1149 0 0 128
subproc 4 1K 2K 5530K 11 0 0 256
session 13 1K 1K 5530K 27 0 0 64
proc 4 1K 1K 5530K 7 0 0
16,128,256,512
in_multi 28 3K 3K 5530K 28 0 0 16,64,2048
ip_moptions 1 1K 1K 5530K 1 0 0 16
UFS mount 7 31K 31K 5530K 7 0 0
16,512,2048,4096,16384
fragtbl 0 0K 1K 5530K 2219 0 0 32
routetbl 73 5K 5K 5530K 103 0 0
16,32,64,128,256
temp 11 61K 78K 5530K 20273 0 0
16,32,64,128,256,512,1024,2048,4096,16384,65536
pcb 20 4K 4K 5530K 137 0 0
16,32,64,512
devbuf 154 159K 161K 5530K 201 0 0
16,32,64,128,256,512,1024,2048,4096,16384,131072
exec 1 1K 5K 5530K 6759 0 0
16,64,256,512,1024,2048
kevent 2 1K 1K 5530K 2 0 0 128,256
ioctlops 0 0K 1K 5530K 12 0 0 512
UFS quota 1 16K 16K 5530K 1 0 0 16384
newblk 1 1K 1K 5530K 1 0 0 256
inodedep 1 16K 17K 5530K 38 0 0 128,16384
pagedep 1 2K 2K 5530K 1 0 0 2048
NFS mount 1 1K 1K 5530K 1 0 0 512
NFS srvsock 2 1K 1K 5530K 2 0 0 512
NFS daemon 1 1K 1K 5530K 1 0 0 256
NFS diroff 24 3K 5K 5530K 133 0 0 64,256
NFS req 0 0K 1K 5530K 5432 0 0 64
NQNFS Lease 1 1K 1K 5530K 1 0 0 1024
NFS node 1 16K 16K 5530K 1 0 0 16384
MSDOSFS mount 1 8K 8K 5530K 1 0 0 8192
kernfs mount 1 1K 1K 5530K 1 0 0 16
ISOFS mount 1 16K 16K 5530K 1 0 0 16384
NDP 11 1K 1K 5530K 13 0 0 16,64,128
Memory totals: In Use Free Requests
749K 93K 161857
Memory resource pool statistics
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg
Maxpg Idle
phpool 40 104 0 39 1 0 1 1 0
inf 0
pcgpool 140 9 0 5 1 0 1 1 0
inf 0
vmsppl 232 4237 0 4208 2 0 2 2 0
inf 0
vmmpepl 96 131573 0 130911 22 3 19 19 0
inf 3
vmmpekpl 96 5274 0 5245 3 0 3 3 0
inf 0
uaoeltpl 88 8 0 2 1 0 1 1 0
inf 0
aobjpl 52 1 0 0 1 0 1 1 0
inf 0
pmappl 36 4237 0 4208 1 0 1 1 0
inf 0
amappl 40 35553 0 35301 4 1 3 3 0
inf 0
bufpl 128 15874 0 15545 15 1 14 14 0
inf 3
buf1k 1024 1 0 1 1 0 1 1 1
1 1
buf2k 2048 662 0 465 12 5 7 8 1
1 0
buf4k 4096 18 0 11 1 0 1 1 1
1 0
buf8k 8192 30 0 23 2 1 1 2 1
1 0
buf16k 16384 343 0 225 60 26 34 34 1
1 0
buf32k 32768 5 0 5 3 2 1 3 1
1 1
mbpl 256 77 0 46 4 1 3 4 1
inf 1
mclpl 2048 24 0 12 14 4 10 10 4
2048 4
kqueuepl 296 1 0 0 1 0 1 1 0
inf 0
knotepl 80 5 0 0 1 0 1 1 0
inf 0
sockpl 200 184 0 159 2 0 2 2 0
inf 0
ttypl 264 67 0 0 5 0 5 5 0
inf 0
rndsample 528 130 0 128 1 0 1 1 0
inf 0
procpl 408 4246 0 4208 5 0 5 5 0
inf 1
lwppl 128 4246 0 4208 2 0 2 2 0
inf 0
pgrppl 16 52 0 37 1 0 1 1 0
inf 0
pcredpl 24 4246 0 4208 1 0 1 1 0
inf 0
plimitpl 160 5 0 2 1 0 1 1 0
inf 0
pstatspl 224 4246 0 4208 3 0 3 3 0
inf 0
rusgepl 72 4208 0 4208 2 1 1 1 0
inf 1
ptimerpl 124 11 0 7 1 0 1 1 0
inf 0
filepl 56 21650 0 21581 2 0 2 2 0
inf 1
cwdipl 12 4237 0 4208 1 0 1 1 0
inf 0
fdescpl 280 4237 0 4208 3 0 3 3 0
inf 0
pnbufpl 1024 7 0 4 1 0 1 1 0
inf 0
vnodepl 168 5744 0 3498 94 0 94 94 0
inf 0
ncachepl 84 7286 0 5446 56 17 39 39 0
inf 0
sdpcpool 128 4603 0 4603 21 10 11 13 0
inf 11
pagedeppl 72 525 0 523 4 3 1 4 0
inf 0
inodedeppl 88 6929 0 6920 78 71 7 74 0
inf 6
newblkpl 40 16058 0 16058 1 0 1 1 0
inf 1
bmsafemappl 36 90 0 90 1 0 1 1 0
inf 1
allocdirectpl 80 15872 0 15872 14 6 8 10 0
inf 8
indirdeppl 32 16 0 16 1 0 1 1 0
inf 1
allocindirpl 72 186 0 186 1 0 1 1 0
inf 1
freefragpl 40 2419 0 2419 1 0 1 1 0
inf 1
freeblkspl 176 3384 0 3384 136 135 1 135 0
inf 1
freefilepl 36 3482 0 3482 29 28 1 28 0
inf 1
diraddpl 36 6559 0 6550 6 3 3 5 0
inf 2
mkdirpl 32 484 0 484 1 0 1 1 0
inf 1
dirrempl 36 6559 0 6559 28 27 1 28 0
inf 1
newdirblkpl 20 11 0 11 1 1 0 1 0
inf 0
ffsinopl 192 10160 0 8001 107 0 107 107 0
inf 0
dino1pl 128 10160 0 8001 73 0 73 73 0
inf 0
nfsnodepl 304 203 0 124 9 0 9 9 0
inf 2
nfsvapl 112 203 0 124 4 0 4 4 0
inf 1
ncr53c9x_ecb 52 8399 0 8399 3 0 3 3 1
inf 3
scxspl 148 8274 0 8274 8 0 8 8 1
inf 8
rtentpl 132 34 0 1 2 0 2 2 0
inf 0
in6pcbpl 156 22 0 12 1 0 1 1 0
inf 0
inpcbpl 108 41 0 32 1 0 1 1 0
inf 0
inmltpl 32 2 0 0 1 0 1 1 0
inf 0
ipqepl 44 13009 0 13009 1 0 1 1 0
inf 1
tcpcbpl 316 11 0 2 1 0 1 1 0
inf 0
tcpipqepl 44 1 0 1 1 0 1 1 0
inf 1
synpl 184 2 0 2 1 0 1 1 0
inf 1
sigapl 2052 4237 0 4208 33 0 33 33 0
inf 4
extent 20 72 0 68 1 0 1 1 0
inf 0
pipepl 144 3610 0 3602 1 0 1 1 0
inf 0
In use 3890K, total allocated 4924K; utilization 79.0%
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