Bio & Biovec-1 increasing cache size, never freed during disk IO

matteo brancaleoni
2006-02-25T20:45:45Z

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Hi.

I'm experiencing a problem with 2.6.15.4 / 2.6.16-rc4, noticed during
high disk IO (copying a lot of data between 2 machines): the system
memory get filled up, until the full swap is used and the system must
be rebooted (or is unusable). Stopping the process does not free the
memory, and happens not only copying via network, but also with a
simple
cp -a dirwithmanybigfiles testdir.

The system is running on athlon64:
Linux morgor 2.6.16-rc4 #2 SMP Sat Feb 25 19:55:36 CET 2006 x86_64
x86_64 x86_64 GNU/Linux
Same issue with 2.6.15.4

The box has a single soft-raid1 device made by 2 sata disk on promise
controller.
Attached slabinfo dump and dmesg dump.

Some system informations:
* This is the modules list:
Linux morgor 2.6.16-rc4 #2 SMP Sat Feb 25 19:55:36 CET 2006 x86_64
x86_64 x86_64 GNU/Linux
[root@morgor ~]# lsmod
Module Size Used by
ipv6 399008 18
ppdev 42888 0
autofs4 55560 1
nfs 251224 2
lockd 97424 2 nfs
nfs_acl 37120 1 nfs
sunrpc 191944 4 nfs,lockd,nfs_acl
rfcomm 105376 0
l2cap 92160 5 rfcomm
bluetooth 117252 4 rfcomm,l2cap
dm_mirror 54912 0
dm_mod 90192 1 dm_mirror
video 50952 0
button 41120 0
battery 43912 0
ac 38920 0
lp 48208 0
parport_pc 63144 1
parport 74636 3 ppdev,lp,parport_pc
nvram 42888 0
ohci1394 67272 0
ehci_hcd 65160 0
sg 69672 0
ieee1394 392216 1 ohci1394
uhci_hcd 65952 0
snd_via82xx 63784 0
gameport 50832 1 snd_via82xx
snd_ac97_codec 136536 1 snd_via82xx
snd_ac97_bus 36224 1 snd_ac97_codec
snd_seq_dummy 37508 0
snd_seq_oss 66688 0
snd_seq_midi_event 41472 1 snd_seq_oss
snd_seq 90144 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event
snd_pcm_oss 85632 0
snd_mixer_oss 51328 1 snd_pcm_oss
snd_pcm 126728 3 snd_via82xx,snd_ac97_codec,snd_pcm_oss
snd_timer 59656 2 snd_seq,snd_pcm
snd_page_alloc 44816 2 snd_via82xx,snd_pcm
snd_mpu401_uart 42112 1 snd_via82xx
snd_rawmidi 61696 1 snd_mpu401_uart
snd_seq_device 43280 4 snd_seq_dummy,snd_seq_oss,snd_seq,snd_rawmidi
i2c_viapro 43160 0
snd 97320 11
snd_via82xx,snd_ac97_codec,snd_seq_oss,snd_seq,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer,snd_mpu401_uart,snd_rawmidi,snd_seq_device
i2c_core 57728 1 i2c_viapro
skge 72720 0
soundcore 44576 1 snd
raid1 54912 2
ext3 163984 2
jbd 93480 1 ext3
sata_promise 45700 6
sata_via 42500 0
libata 93592 2 sata_promise,sata_via
sd_mod 50688 8
scsi_mod 180688 4 sg,sata_promise,libata,sd_mod

* fstab
[root@morgor ~]# cat /etc/fstab
/dev/md1 / ext3 defaults 1 1
/dev/md0 /boot ext3 defaults 1 2
devpts /dev/pts devpts gid=5,mode=620 0 0
tmpfs /dev/shm tmpfs defaults 0 0
proc /proc proc defaults 0 0
sysfs /sys sysfs defaults 0 0
LABEL=SWAP-sda2 swap swap defaults 0 0
LABEL=SWAP-sdb2 swap swap defaults 0 0

* cpuinfo
[root@morgor ~]# cat /proc/cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 15
model : 47
model name : AMD Athlon(tm) 64 Processor 3200+
stepping : 0
cpu MHz : 1800.000
cache size : 512 KB
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext
fxsr_opt lm 3dnowext 3dnow pni lahf_lm
bogomips : 3613.48
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp tm stc

Thanks a lot,

Matteo Brancaleoni

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