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Subjectfunny free output with all mem for buffers
Hi.

When making several images of Linux install disks with dd
(dd if=/dev/cdrom of=linux.img) I dared to check the mem/cache state:

total used free shared buffers cached
Mem: 513168 510104 3064 992 349720 4294707520
-/+ buffers/cache: -4294547136 4295060304
Swap: 345356 0 345356

See the <0 value ? Strange accounting...
Kernel is 2.4.13-ac5, 512Mb of ram.

If it is worthy, here are the outputs of /proc/meminfo and slabinfo

total: used: free: shared: buffers: cached:
Mem: 525484032 522346496 3137536 1015808 395116544 18446744073370112000
Swap: 353644544 0 353644544
MemTotal: 513168 kB
MemFree: 3064 kB
MemShared: 992 kB
Buffers: 385856 kB
Cached: 4294635812 kB
SwapCached: 0 kB
Active: 324320 kB
Inact_dirty: 114476 kB
Inact_clean: 1432 kB
Inact_target: 104856 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 513168 kB
LowFree: 3064 kB
SwapTotal: 345356 kB
SwapFree: 345356 kB

slabinfo - version: 1.1 (SMP)
kmem_cache 64 64 244 4 4 1 : 252 126
tcp_tw_bucket 1 40 96 1 1 1 : 252 126
tcp_bind_bucket 130 226 32 2 2 1 : 252 126
tcp_open_request 0 0 64 0 0 1 : 252 126
inet_peer_cache 2 118 64 2 2 1 : 252 126
ip_fib_hash 10 226 32 2 2 1 : 252 126
ip_dst_cache 11 72 160 3 3 1 : 252 126
arp_cache 2 30 128 1 1 1 : 252 126
blkdev_requests 9216 9240 96 231 231 1 : 252 126
journal_head 3933 7800 48 53 100 1 : 252 126
revoke_table 1 253 12 1 1 1 : 252 126
revoke_record 0 0 32 0 0 1 : 252 126
dnotify cache 0 0 20 0 0 1 : 252 126
file lock cache 84 126 92 3 3 1 : 252 126
fasync cache 1 202 16 1 1 1 : 252 126
uid_cache 2 113 32 1 1 1 : 252 126
skbuff_head_cache 353 696 160 29 29 1 : 252 126
sock 271 333 832 37 37 2 : 124 62
sigqueue 116 116 132 4 4 1 : 252 126
kiobuf 0 0 8768 0 0 4 : 0 0
cdev_cache 270 295 64 5 5 1 : 252 126
bdev_cache 7 118 64 2 2 1 : 252 126
mnt_cache 15 118 64 2 2 1 : 252 126
inode_cache 1129 1674 448 186 186 1 : 124 62
dentry_cache 888 3480 128 116 116 1 : 252 126
filp 1693 1720 96 43 43 1 : 252 126
names_cache 3 3 4096 3 3 1 : 60 30
buffer_head 212644 215920 96 5395 5398 1 : 252 126
mm_struct 144 144 160 6 6 1 : 252 126
vm_area_struct 2706 2773 64 46 47 1 : 252 126
fs_cache 236 236 64 4 4 1 : 252 126
files_cache 108 108 416 12 12 1 : 124 62
signal_act 96 96 1312 32 32 1 : 60 30
size-131072(DMA) 0 0 131072 0 0 32 : 0 0
size-131072 0 0 131072 0 0 32 : 0 0
size-65536(DMA) 0 0 65536 0 0 16 : 0 0
size-65536 0 0 65536 0 0 16 : 0 0
size-32768(DMA) 0 0 32768 0 0 8 : 0 0
size-32768 1 1 32768 1 1 8 : 0 0
size-16384(DMA) 0 0 16384 0 0 4 : 0 0
size-16384 7 8 16384 7 8 4 : 0 0
size-8192(DMA) 0 0 8192 0 0 2 : 0 0
size-8192 4 6 8192 4 6 2 : 0 0
size-4096(DMA) 0 0 4096 0 0 1 : 60 30
size-4096 51 51 4096 51 51 1 : 60 30
size-2048(DMA) 0 0 2048 0 0 1 : 60 30
size-2048 36 44 2048 20 22 1 : 60 30
size-1024(DMA) 0 0 1024 0 0 1 : 124 62
size-1024 168 168 1024 42 42 1 : 124 62
size-512(DMA) 0 0 512 0 0 1 : 124 62
size-512 680 680 512 85 85 1 : 124 62
size-256(DMA) 0 0 256 0 0 1 : 252 126
size-256 450 450 256 30 30 1 : 252 126
size-128(DMA) 0 0 128 0 0 1 : 252 126
size-128 923 930 128 31 31 1 : 252 126
size-64(DMA) 0 0 64 0 0 1 : 252 126
size-64 566 767 64 13 13 1 : 252 126
size-32(DMA) 0 0 32 0 0 1 : 252 126
size-32 1058 2599 32 23 23 1 : 252 126


--
J.A. Magallon # Let the source be with you...
mailto:jamagallon@able.es
Mandrake Linux release 8.2 (Cooker) for i586
Linux werewolf 2.4.13-ac5-beo #1 SMP Tue Oct 30 00:10:00 CET 2001 i686
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