loadavg always >=1.00 on debian

Started by hnb2907, August 21, 2013, 11:48:36 pm

Previous topic - Next topic

hnb2907

August 21, 2013, 11:48:36 pm Last Edit: August 21, 2013, 11:50:09 pm by hnb2907
Hi all,

I'm running the revision 2 debian image from here https://www.olimex.com/wiki/A20-OLinuXino-MICRO.  The loadavg never drops below 1.00, and will sit at exactly "load average: 1.00, 1.00, 1.00" if the system is idling for many hours.  The CPU's are normally ~99% idle.

Is it similar to this issue seen here: http://ict-crew.nl/qube:high_load_average_fix  How to fix for debian on the A20?

For reference, some results from my A20 board:
root@A20:~# uptime
21:28:14 up 35 min,  2 users,  load average: 1.00, 1.01, 0.93
root@A20:~#


top - 21:42:26 up 49 min,  2 users,  load average: 1.00, 1.01, 0.97
Tasks:  73 total,   1 running,  72 sleeping,   0 stopped,   0 zombie
%Cpu(s):  0.1 us,  0.8 sy,  0.0 ni, 99.0 id,  0.1 wa,  0.0 hi,  0.1 si,  0.0 st
KiB Mem:    998524 total,   129656 used,   868868 free,    34128 buffers
KiB Swap:        0 total,        0 used,        0 free,    62876 cached

  PID USER      PR  NI  VIRT  RES  SHR S  %CPU %MEM    TIME+  COMMAND
    3 root      20   0     0    0    0 S   2.4  0.0   1:16.28 [ksoftirqd/0]
    9 root      20   0     0    0    0 S   2.3  0.0   1:00.06 [ksoftirqd/1]
3777 root      20   0  4068 1188  896 R   0.3  0.1   0:00.07 top -b -n 2 -d 10 -c
  711 root      20   0     0    0    0 S   0.2  0.0   0:03.25 [hdmi proc]
3774 root      20   0     0    0    0 S   0.2  0.0   0:00.06 [kworker/0:0]
  481 root      20   0     0    0    0 S   0.1  0.0   0:02.89 [kworker/1:1]
    1 root      20   0  1684  624  520 S   0.0  0.1   0:03.60 init [2]
    2 root      20   0     0    0    0 S   0.0  0.0   0:00.00 [kthreadd]
    6 root      rt   0     0    0    0 S   0.0  0.0   0:00.00 [migration/0]
    7 root      rt   0     0    0    0 S   0.0  0.0   0:00.00 [migration/1]
   10 root       0 -20     0    0    0 S   0.0  0.0   0:00.00 [khelper]
   11 root      20   0     0    0    0 S   0.0  0.0   0:00.00 [kdevtmpfs]
   12 root       0 -20     0    0    0 S   0.0  0.0   0:00.00 [netns]
   13 root      20   0     0    0    0 S   0.0  0.0   0:00.11 [kworker/u:1]
   16 root       0 -20     0    0    0 S   0.0  0.0   0:00.00 [sync_system_wor]
   21 root       0 -20     0    0    0 S   0.0  0.0   0:00.00 [earlysuspend_ho]
  236 root      20   0     0    0    0 S   0.0  0.0   0:00.01 [sync_supers]
  238 root      20   0     0    0    0 S   0.0  0.0   0:00.00 [bdi-default]
  240 root       0 -20     0    0    0 S   0.0  0.0   0:00.00 [kblockd]
  259 root      20   0     0    0    0 S   0.0  0.0   0:00.06 [khubd]
  264 root       0 -20     0    0    0 S   0.0  0.0   0:00.00 [cpufreq_uevent]
  307 root       0 -20     0    0    0 S   0.0  0.0   0:00.00 [cfg80211]
  308 root      20   0     0    0    0 S   0.0  0.0   0:00.13 [kworker/0:1]
  396 root      20   0     0    0    0 D   0.0  0.0   0:00.21 [usb-hardware-sc]
  403 root       0 -20     0    0    0 S   0.0  0.0   0:00.00 [rpciod]
  407 root      20   0     0    0    0 S   0.0  0.0   0:00.00 [kswapd0]
  408 root      20   0     0    0    0 S   0.0  0.0   0:00.00 [fsnotify_mark]
  409 root       0 -20     0    0    0 S   0.0  0.0   0:00.00 [nfsiod]
  413 root       0 -20     0    0    0 S   0.0  0.0   0:00.00 [crypto]
  462 root      20   0     0    0    0 S   0.0  0.0   0:00.00 [khvcd]
  517 root      20   0     0    0    0 S   0.0  0.0   0:00.01 [scsi_eh_0]
  520 root      20   0     0    0    0 S   0.0  0.0   0:00.12 [kworker/u:2]
  566 root      20   0     0    0    0 S   0.0  0.0   0:00.00 [scsi_eh_1]
  567 root      20   0     0    0    0 S   0.0  0.0   0:00.02 [usb-storage]
  582 root       0 -20     0    0    0 S   0.0  0.0   0:00.00 [f_mtp]
  587 root      20   0     0    0    0 S   0.0  0.0   0:00.00 [file-storage]
  616 root      20   0     0    0    0 S   0.0  0.0   0:00.00 [kworker/1:2]
  635 root       0 -20     0    0    0 S   0.0  0.0   0:00.00 [fantasys]
  720 root      20   0     0    0    0 S   0.0  0.0   0:02.95 [mmcqd/0]
  728 root      20   0     0    0    0 S   0.0  0.0   0:00.05 [flush-179:0]
  729 root      20   0     0    0    0 S   0.0  0.0   0:00.06 [jbd2/mmcblk0p2-]
  730 root       0 -20     0    0    0 S   0.0  0.0   0:00.00 [ext4-dio-unwrit]
  843 root      20   0  2484 1248  624 S   0.0  0.1   0:00.46 udevd --daemon
  944 root      20   0  2480 1072  432 S   0.0  0.1   0:00.04 udevd --daemon
  945 root      20   0  2480 1016  388 S   0.0  0.1   0:00.00 udevd --daemon
2253 root      20   0  4104 1960  248 S   0.0  0.2   0:00.00 dhclient -v -pf /run/dhclient.eth0.pid -lf /var/lib/dhcp/dhclient.eth0.leases eth0
2288 root      20   0     0    0    0 S   0.0  0.0   0:00.14 [cifsd]
2400 root      20   0  1892  744  528 S   0.0  0.1   0:00.02 /sbin/rpcbind -w
2431 statd     20   0  2204 1084  676 S   0.0  0.1   0:00.01 /sbin/rpc.statd
2443 root      20   0  7068  832  332 S   0.0  0.1   0:00.00 /usr/sbin/rpc.idmapd
2674 lp        20   0  1652  472  348 S   0.0  0.0   0:00.00 /usr/sbin/lpd -s
2688 daemon    20   0  1720  300  172 S   0.0  0.0   0:00.00 /usr/sbin/atd
2868 messageb  20   0  2584  892  612 S   0.0  0.1   0:00.03 /usr/bin/dbus-daemon --system
2907 root      20   0  3352  692  532 S   0.0  0.1   0:00.01 /usr/sbin/cron
3116 root      20   0  8148 1424  960 S   0.0  0.1   0:00.15 /usr/sbin/nmbd -D
3169 root      20   0  5188  960  540 S   0.0  0.1   0:00.00 /usr/sbin/sshd
3187 root      20   0 15572 2748 2076 S   0.0  0.3   0:00.10 /usr/sbin/smbd -D
3212 root      20   0 16088 1092  420 S   0.0  0.1   0:00.00 /usr/sbin/smbd -D
3225 root      20   0 12228 1964 1420 S   0.0  0.2   0:00.03 /usr/sbin/winbindd
3244 root      20   0 12228 1232  684 S   0.0  0.1   0:00.01 /usr/sbin/winbindd
3245 Debian-e  20   0  9416 1108  524 S   0.0  0.1   0:00.00 /usr/sbin/exim4 -bd -q30m
3292 minidlna  20   0 36700 3692 1124 S   0.0  0.4   0:00.49 /usr/bin/minidlna -f /etc/minidlna.conf -P /run/minidlna/minidlna.pid
3293 root      20   0  3340  708  580 S   0.0  0.1   0:00.01 /sbin/getty 38400 tty1
3294 root      20   0  3340  708  580 S   0.0  0.1   0:00.01 /sbin/getty 38400 tty2
3295 root      20   0  3632 1568 1128 S   0.0  0.2   0:00.06 /bin/login -f
3298 root      20   0 27468 3256 2160 S   0.0  0.3   0:00.16 /usr/sbin/console-kit-daemon --no-daemon
3365 root      20   0 22196 2516 2028 S   0.0  0.3   0:00.09 /usr/lib/policykit-1/polkitd --no-debug
3374 root      20   0  5272 2744 1248 S   0.0  0.3   0:00.31 -bash
3393 root      20   0 11884 3560 2680 S   0.0  0.4   0:00.97 sshd: root@pts/1
3398 root      20   0  5300 2864 1332 S   0.0  0.3   0:01.45 -bash
3626 root      20   0     0    0    0 S   0.0  0.0   0:00.00 [jbd2/sda2-8]
3627 root       0 -20     0    0    0 S   0.0  0.0   0:00.00 [ext4-dio-unwrit]
3700 root      20   0     0    0    0 S   0.0  0.0   0:02.59 [kworker/0:2]



Many thanks,
Chris.

PaceyIV

You're right.

I upload at link https://drive.google.com/folderview?id=0BzF5qrRdBNDbR0ZCdkJ3LWJCWEE&usp=sharing the script.bin modified. You can save this to the boot partition on the microSD.

I do this:

XFer

Note: with this "fix", on my board the OTG USB port does not work anymore.

Reverting this "fix", it works again.

Fernando

PaceyIV

I haven't tried to use the UBS port.
I use the board as a server, so it's not a things to worry about.

XFer

Good for you, but people reading the board should be informed about this problem.

Fernando

PaceyIV

Maybe there are some options in the kernel that can change the functionality.
I saw that there are some difference between your kernel config (posted in ReCompile Kernel for Debian Image) and Isidoro about USB and USB OTG.

XFer

The whole USB support is flawed in 3.3.
I had to modify stuff in the usb drivers and in one of the Makefiles to have it work with at least one of my MIDI keyboards.
It's not a matter of config (mine is different because I needed more USB options to get MIDI keyboards working), in fact they are rewriting a lot of USB stuff for 3.4 (but 3.4 has other issues).  :-\

Anyway about the script.fex: a good compromise for the mini-USB port is

[usbc0]
usb_used = 1
usb_port_type = 1
usb_detect_type = 0
usb_id_gpio = port:PH04<0><1><default><default>
usb_det_vbus_gpio = port:PH05<0><0><default><default>
usb_drv_vbus_gpio = port:PB09<1><0><default><0>
usb_host_init_state = 1
usb_restric_flag = 0


which keeps the low load (low ksoftirq cpu usage) AND keeps OTG port (mini-USB) working both with USB 1.1 and with USB 2.0 devices, if only in Host mode (which is the most useful anyway).

Fernando

fitmik

Its not a problem specific to the 3.3 kernel. This is the same on 3.4.

I have this issue on both the A20 and the A10s boards with the last debian image from Olimex.


fitmik

December 27, 2013, 06:59:02 pm #8 Last Edit: December 27, 2013, 07:00:33 pm by fitmik
Here is a quick how to fix this yourself:

git clone git://github.com/linux-sunxi/sunxi-tools.git
cd sunxi-tools/
make fex2bin

Then retrieve the original script_a20.fex from your sdcard and copy it.

vi script_a20.fex

I use this setup on the buggy USB port (thanks to Xfer) :

[usbc0]
usb_used = 1
usb_port_type = 1
usb_detect_type = 0
usb_id_gpio = port:PH04
usb_det_vbus_gpio = port:PH05
usb_drv_vbus_gpio = port:PB09
usb_host_init_state = 1
usb_restric_flag = 0

"which keeps the low load (low ksoftirq cpu usage) AND keeps OTG port (mini-USB) working both with USB 1.1 and with USB 2.0 devices, if only in Host mode (which is the most useful anyway)." Xfer

Then you convert it back to script bin.

./fex2bin -v script_a20.fex script.bin

And you copy it back to the root of your sdcard.

This should be the default until an official fix is found imho.

fushfush

There do you find that script then the A20 is started?

nabbal

This issue still exists in the newer A20-OLinuXino-LIME2 Debian Jessie with kernel 3.4.103+ release 3.

I managed to fix it with the following commands:
sudo apt-get install build-essential libusb-1.0
sudo mount /dev/mmcblk0p1 /media/olimex/6B4C-FFFD
cd ~
git clone https://github.com/linux-sunxi/sunxi-tools
cd sunxi-tools
make
sudo su
./bin2fex /media/olimex/6B4C-FFFD/script.bin > /media/olimex/6B4C-FFFD/script.fex
vim /media/olimex/6B4C-FFFD/script.fex
#Change these values:
[usbc0]
usb_port_type = 1
usb_detect_type = 0
usb_host_init_state = 1
# save the file
cp /media/olimex/6B4C-FFFD/script.bin /media/olimex/6B4C-FFFD/script.bin.save
./fex2bin /media/olimex/6B4C-FFFD/script.fex /media/olimex/6B4C-FFFD/script.bin