Zvlastni (jednoduchy) problem s ext3

[Dalibor Straka]

Ahoj,

mam dva stroje jeden amd64 a druhy amd32. Na obou bezi debian stable.
Udelal jsem patititon ext3 a v ni mam adresar s (bohuzel) 2 miliony
souboru. Stejne operace "rm adresar/ -rf", "chown root:root adr/ -R"
trvaji na jednom stroji s amd64 nekolik hodin a na amd32 minutu.
Posilam vystup "tune2fs -l /dev/md4", lisi se take dir_index, ale
to jsou jen nejake bstromy, ktere by naopak meli urychlovat ;).
Kdyz postvu strace na tentyz proces rm nebo chown na obou strojich
na amd64 bezi jednotky za sekundu, na druhem stovky-tisice/s.

Nedomnivam se, ze by zpomaloval procesor, ale spise nejaky parametr
ext3 nebo nejake jine kontroly systemu. Hdparm -t dava na amd64
66 MB/sec na amd32 51 MB/sec. Na obou je sw raid1 (md) nad ide/sata
disky.

amd64(dualcore opteron):
tune2fs 1.40-WIP (14-Nov-2006)
Filesystem volume name:   <none>
Last mounted on:          <not available>
Filesystem UUID:          384a6534-9ae5-4f06-b81d-57d4da441fb5
Filesystem magic number:  0xEF53
Filesystem revision #:    1 (dynamic)
Filesystem features:      has_journal resize_inode dir_index filetype
needs_recovery sparse_super large_file
Filesystem flags:         signed directory hash 
Default mount options:    (none)
Filesystem state:         clean
Errors behavior:          Continue
Filesystem OS type:       Linux
Inode count:              13434880
Block count:              26854624
Reserved block count:     268546
Free blocks:              24784530
Free inodes:              13373811
First block:              0
Block size:               4096
Fragment size:            4096
Reserved GDT blocks:      1017
Blocks per group:         32768
Fragments per group:      32768
Inodes per group:         16384
Inode blocks per group:   512
Filesystem created:       Tue Jul 31 18:58:29 2007
Last mount time:          Wed Sep 12 20:49:47 2007
Last write time:          Wed Sep 12 20:49:47 2007
Mount count:              17
Maximum mount count:      21
Last checked:             Tue Jul 31 18:58:29 2007
Check interval:           15552000 (6 months)
Next check after:         Sun Jan 27 17:58:29 2008
Reserved blocks uid:      0 (user root)
Reserved blocks gid:      0 (group root)
First inode:              11
Inode size:               128
Journal inode:            8
Default directory hash:   tea
Directory Hash Seed:      a80ed3ed-df64-4659-a75f-647a2dd909a3
Journal backup:           inode blocks


amd32 (Sempron):
tune2fs 1.37 (21-Mar-2005)
Filesystem volume name:   <none>
Last mounted on:          <not available>
Filesystem UUID:          24eb6230-6416-4f3b-b784-abdc502de7a0
Filesystem magic number:  0xEF53
Filesystem revision #:    1 (dynamic)
Filesystem features:      has_journal filetype needs_recovery
sparse_super large_file
Default mount options:    (none)
Filesystem state:         clean
Errors behavior:          Continue
Filesystem OS type:       Linux
Inode count:              7585792
Block count:              15162560
Reserved block count:     758128
Free blocks:              3112550
Free inodes:              4795638
First block:              0
Block size:               4096
Fragment size:            4096
Blocks per group:         32768
Fragments per group:      32768
Inodes per group:         16384
Inode blocks per group:   512
Filesystem created:       Fri Feb 11 03:12:00 2005
Last mount time:          Sat Sep 22 15:03:48 2007
Last write time:          Sat Sep 22 15:03:48 2007
Mount count:              3
Maximum mount count:      39
Last checked:             Sun May 20 16:10:38 2007
Check interval:           15552000 (6 months)
Next check after:         Fri Nov 16 15:10:38 2007
Reserved blocks uid:      0 (user root)
Reserved blocks gid:      0 (group root)
First inode:              11
Inode size:               128
Journal inode:            8
Default directory hash:   tea
Directory Hash Seed:      4d790370-67e7-4dc2-86b3-1a4dd5c2be4b
Journal backup:           inode blocks


Nenapada vas neco?
-- Zcela zeleny Dalibor 
P.S. Mam jedno jedine podezreni (par debilnich procesu prave nad tim
adresarem neco dela, lsof ukaze par viniku, ale jejich intenzitu moc
neposoudim).