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

Neil Brown
2006-02-27T22:49:11Z

On Monday February 27, mbrancaleoni@gmail.com wrote:
> FYI, this problem on 2.6.14.7 does not happens at all...
>
> anyone has any idea about?

Apparently not. Fingers are pointing at md/raid1 - with reasonable
cause - but I cannot find any error in that code, not can I reproduce
the problem.

Are you able to narrow down the difference between working and
not-working.

Possibly use 'git bisect' (This is the best option, but not having
used it myself yet, I don't feel comfortable recommending it).

Possibly just try the various 2.6.15-rcX kernels and find the first
one that breaks.

That would be a great help.

NeilBrown

>
> Greetings, Matteo.
>
> On 2/25/06, matteo brancaleoni <mbrancaleoni@gmail.com> wrote:
> > 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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