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SubjectRe: 2.4.16 memory badness (fixed?)
Date


In a personal email, Mike Galbraith wrote to me:

| On Sat, 8 Dec 2001, Leigh Orf wrote:
|
| > inode_cache 439584 439586 512 62798 62798 1
| > dentry_cache 454136 454200 128 15140 15140 1
|
| I'd try moving shrink_[id]cache_memory to the very top of vmscan.c::shrink_caches.
|
| -Mike

Mike,

I tried what you suggested starting with a stock 2.4.16 kernel, and it
did fix the problem with 2.4.16 ENOMEM being returned.

Now with that change and after updatedb runs, here's what the memory
situation looks like. Note inode_cache and dentry_cache are almost
nothing. Dunno if that's a good thing or not, but I'd definitely
consider this for a patch.

home[1002]:/home/orf% free
total used free shared buffers cached
Mem: 1029828 1020316 9512 0 719596 145768
-/+ buffers/cache: 154952 874876
Swap: 2064344 0 2064344

home[1003]:/home/orf% cat /proc/meminfo
total: used: free: shared: buffers: cached:
Mem: 1054543872 1044979712 9564160 0 736870400 149282816
Swap: 2113888256 0 2113888256
MemTotal: 1029828 kB
MemFree: 9340 kB
MemShared: 0 kB
Buffers: 719600 kB
Cached: 145784 kB
SwapCached: 0 kB
Active: 462276 kB
Inactive: 481572 kB
HighTotal: 130992 kB
HighFree: 2044 kB
LowTotal: 898836 kB
LowFree: 7296 kB
SwapTotal: 2064344 kB
SwapFree: 2064344 kB

home[1001]:/home/orf% cat /proc/slabinfo
slabinfo - version: 1.1
kmem_cache 65 68 112 2 2 1
ip_conntrack 13 30 384 3 3 1
nfs_write_data 0 0 384 0 0 1
nfs_read_data 0 0 384 0 0 1
nfs_page 0 0 128 0 0 1
ip_fib_hash 10 112 32 1 1 1
urb_priv 0 0 64 0 0 1
clip_arp_cache 0 0 128 0 0 1
ip_mrt_cache 0 0 128 0 0 1
tcp_tw_bucket 0 30 128 0 1 1
tcp_bind_bucket 8 112 32 1 1 1
tcp_open_request 0 0 128 0 0 1
inet_peer_cache 1 59 64 1 1 1
ip_dst_cache 21 40 192 2 2 1
arp_cache 3 30 128 1 1 1
blkdev_requests 640 660 128 22 22 1
journal_head 0 0 48 0 0 1
revoke_table 0 0 12 0 0 1
revoke_record 0 0 32 0 0 1
dnotify cache 0 0 20 0 0 1
file lock cache 2 42 92 1 1 1
fasync cache 2 202 16 1 1 1
uid_cache 5 112 32 1 1 1
skbuff_head_cache 293 300 192 15 15 1
sock 209 213 1280 70 71 1
sigqueue 2 29 132 1 1 1
cdev_cache 21 295 64 3 5 1
bdev_cache 8 59 64 1 1 1
mnt_cache 19 59 64 1 1 1
inode_cache 7151 16905 512 2412 2415 1
dentry_cache 3043 12630 128 421 421 1
dquot 0 0 128 0 0 1
filp 1990 2010 128 67 67 1
names_cache 0 2 4096 0 2 1
buffer_head 220278 220350 128 7344 7345 1
mm_struct 64 80 192 4 4 1
vm_area_struct 2779 3180 128 93 106 1
fs_cache 63 118 64 2 2 1
files_cache 63 72 448 7 8 1
signal_act 71 72 1344 24 24 1
size-131072(DMA) 0 0 131072 0 0 32
size-131072 0 0 131072 0 0 32
size-65536(DMA) 0 0 65536 0 0 16
size-65536 1 1 65536 1 1 16
size-32768(DMA) 0 0 32768 0 0 8
size-32768 1 1 32768 1 1 8
size-16384(DMA) 0 0 16384 0 0 4
size-16384 1 5 16384 1 5 4
size-8192(DMA) 0 0 8192 0 0 2
size-8192 4 5 8192 4 5 2
size-4096(DMA) 0 0 4096 0 0 1
size-4096 72 78 4096 72 78 1
size-2048(DMA) 0 0 2048 0 0 1
size-2048 61 96 2048 32 48 1
size-1024(DMA) 0 0 1024 0 0 1
size-1024 1475 2988 1024 532 747 1
size-512(DMA) 0 0 512 0 0 1
size-512 1650 4168 512 351 521 1
size-256(DMA) 0 0 256 0 0 1
size-256 486 2340 256 45 156 1
size-128(DMA) 2 30 128 1 1 1
size-128 3483 10050 128 230 335 1
size-64(DMA) 0 0 64 0 0 1
size-64 1792 3304 64 56 56 1
size-32(DMA) 34 59 64 1 1 1
size-32 4159 11092 64 159 188 1

Leigh Orf


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