Out Of Memory freeze

[koper89]

Hi,
I have a problem with xbian freezing on out of memory, I got working rtorrent + sickrage, but when it's trying to download 2+ files - my raspberry keeps freezing on RPI1 like here:
http://forum.xbian.org/printthread.php?tid=2693
on RPI2 without saying anything.
I suspected it may be out of memory casue i installed syslog and here's output before freeze:

Terminal

Mar 7 15:23:10 xbian kernel: <30>[ 24.876932] udevd[1114]: starting version 175
Mar 7 15:23:10 xbian kernel: [ 25.335103] bcm2708_spi bcm2708_spi.0: master is unqueued, this is deprecated
Mar 7 15:23:10 xbian kernel: [ 25.335606] bcm2708_spi bcm2708_spi.0: SPI Controller at 0x3f204000 (irq 80)
Mar 7 15:23:10 xbian kernel: [ 25.400182] bcm2708_i2c_init_pinmode(1,2)
Mar 7 15:23:10 xbian kernel: [ 25.400203] bcm2708_i2c_init_pinmode(1,3)
Mar 7 15:23:10 xbian kernel: [ 25.400711] bcm2708_i2c bcm2708_i2c.1: BSC1 Controller at 0x3f804000 (irq 79) (baudrate 100000)
Mar 7 15:23:10 xbian kernel: [ 25.572035] smsc95xx 1-1.1:1.0 eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
Mar 7 15:23:10 xbian kernel: [ 25.807001] pcm512x 1-004d: Failed to reset device: -5
Mar 7 15:23:10 xbian kernel: [ 25.807049] pcm512x: probe of 1-004d failed with error -5
Mar 7 15:23:10 xbian kernel: [ 25.807197] pcm512x 1-004c: Failed to reset device: -5
Mar 7 15:23:10 xbian kernel: [ 25.807226] pcm512x: probe of 1-004c failed with error -5
Mar 7 15:23:10 xbian kernel: <12>[ 31.875105] init: failsafe main process (512) killed by TERM signal
Mar 7 15:23:10 xbian kernel: <12>[ 35.713325] init: wait-for-state (xbmcxbmc-loaded) main process (1578) killed by TERM signal
Mar 7 15:23:10 xbian kernel: <12>[ 42.803300] init: xbmc-failed-start main process (930) killed by TERM signal
Mar 7 15:23:10 xbian kernel: <12>[ 42.829024] init: wait-for-state (zram-swapxbmc-done) main process (1275) killed by TERM signal
Mar 7 15:23:10 xbian kernel: [ 43.100164] Adding 84988k swap on /dev/mmcblk0p3. Priority:0 extents:1 across:84988k SSFS
Mar 7 15:23:10 xbian kernel: <12>[ 48.414153] init: rtorrent main process (2261) terminated with status 255
Mar 7 15:23:10 xbian kernel: <12>[ 48.414349] init: rtorrent main process ended, respawning
Mar 7 15:23:10 xbian kernel: <12>[ 48.505727] init: rtorrent main process (2350) terminated with status 255
Mar 7 15:23:10 xbian kernel: <12>[ 48.505895] init: rtorrent main process ended, respawning
Mar 7 15:23:10 xbian kernel: <12>[ 48.595088] init: rtorrent main process (2374) terminated with status 255
Mar 7 15:23:10 xbian kernel: <12>[ 48.595306] init: rtorrent respawning too fast, stopped

Then it's freeze.

I suspect it may be because my swap is really small:

Terminal

root@xbian /var/log # free -m
total used free shared buffers cached
Mem: 738 243 494 0 2 144
-/+ buffers/cache: 97 640
Swap: 82 0 82

Terminal

root@xbian /var/log # swapon -s
Filename Type Size Used Priority
/dev/mmcblk0p3 partition 84988 0 0

I'm running it from usb harddrive, here's my cmdline.txt

Terminal

telnet zswap.enabled=1 zswap.compressor=lz4 partswap sdhci-bcm2708.sync_after_dma=0 dwc_otg.lpm_enable=0 console=tty1 root=LABEL=xbian-copy rootflags=subvol=root/@,thread_pool=2,autodefrag,compress=lz4,commit=120 rootfstype=btrfs rootwait smsc95xx.turbo_mode=N logo.nologo quiet noswap loglevel=0 mod_scsi.scan=sync partswap startevent=mountall splash nohdparm --startup-event mountall

Best wishes
koper89

[Fabio72]

You can try adding a swap file

http://www.cyberciti.biz/faq/linux-add-a-swap-file-howto/

It's the fasted method to add swap space without touching partitioning

[koper89]

Do you think it may solve the problem? And is there any advantage of swap partition or there's no real difference between swap file and swap partition?

[Fabio72]

(9th Mar, 2015 06:40 PM)koper89 Wrote:  Do you think it may solve the problem? And is there any advantage of swap partition or there's no real difference between swap file and swap partition?

I don't known if it can solve, but at least you can exclude out of memory errors. I suggested swap file cause it's the fastest way to add swap space and, if you don't need it anymore, you can easily delete it.

[f1vefour]

It's not that, it's a bug in the network driver. I am working on it.

XBian includes a small swap partition, you can see in the log where it activated it.

*edit*
Your issue appears to not be XBian related exactly, it's rtorrent misbehaving and bringing down the system with it.

[f1vefour]

I have a kernel for the RPi 2 I would like you to try.

[koper89]

(10th Mar, 2015 02:36 AM)f1vefour Wrote:  I have a kernel for the RPi 2 I would like you to try.

I would love to test it - where can i find it?

(9th Mar, 2015 11:47 PM)f1vefour Wrote:  Your issue appears to not be XBian related exactly, it's rtorrent misbehaving and bringing down the system with it.

I can say that's it's in high peak of ram usage in rtorrent - when he's out of memory he is killed by term, I suppouse if there would be more swap this "threshold" would be higher but its just my assumption (I don't have much knowledge about linux)

[f1vefour]

Here is the kernel (RPi 2 only): https://db.tt/k0A4FzzV

After downloading do:

Terminal

sudo dpkg -i linux-image-bcm2836_3.18.9+_armhf.deb

Stress it like you have been and let me know if you still have issues.

[koper89]

Already installed, I'll try to stress it tomorrow and post here results
Thanks for help!

[f1vefour]

Thanks, the sooner the better. If it resolves your problem I can push the changes out.

[Killerbee]

(9th Mar, 2015 05:59 PM)Fabio72 Wrote:  You can try adding a swap file

http://www.cyberciti.biz/faq/linux-add-a-swap-file-howto/

It's the fasted method to add swap space without touching partitioning

This doesn't work on a btrfs file system,
link

[f1vefour]

(10th Mar, 2015 05:49 AM)koper89 Wrote:  Already installed, I'll try to stress it tomorrow and post here results
Thanks for help!

I just started two torrents (legal - Ubuntu ISOs) with aria2c and the system appears to freeze even though it hasn't, the movie I have streaming continues to play. I don't know what to make of this really.

I have 50Mbit downstream and it was pulling in about 7 megabytes/sec until it becomes semi-unreponsive. I switched to a USB drive instead of the systems sdcard and it appeared to be worse.

[koper89]

(10th Mar, 2015 06:40 AM)Killerbee Wrote:  

(9th Mar, 2015 05:59 PM)Fabio72 Wrote:  You can try adding a swap file

http://www.cyberciti.biz/faq/linux-add-a-swap-file-howto/

It's the fasted method to add swap space without touching partitioning

This doesn't work on a btrfs file system,
link

So is there a way to extend swap on xbian? (Can i f.e. resize my partition where btrfs filesystem is? and use what left to make swap partition? )

(10th Mar, 2015 06:58 AM)f1vefour Wrote:  

(10th Mar, 2015 05:49 AM)koper89 Wrote:  Already installed, I'll try to stress it tomorrow and post here results
Thanks for help!

I just started two torrents (legal - Ubuntu ISOs) with aria2c and the system appears to freeze even though it hasn't, the movie I have streaming continues to play. I don't know what to make of this really.

I have 50Mbit downstream and it was pulling in about 7 megabytes/sec until it becomes semi-unreponsive. I switched to a USB drive instead of the systems sdcard and it appeared to be worse.

I have 25Mbit downstream, but i'm using openvpn client connection - but thanks to RPi2 i got pretty high performance compared to RPi1 (RPi2 - 3MB/s down RPi1 max 1MB/s), but if in your case it's a freeze i suppouse it'll be in mine also, but let's wait till tomorrow currently its working like a charm

[f1vefour]

Hopefully it continues to work for you, let me know tomorrow.

[koper89]

It stopped but i stressed it a lot It seems like it lost time because it's back in past
Here are my logs:
syslog
http://pastebin.com/mbB9LTPg
kern.log
http://pastebin.com/0zgFe8Hd