IOTop

[TeMpL]

is it possible to add kernel support for iotop

http://talk.maemo.org/showthread.php?t=73905

http://maemo.org/packages/view/iotop/


Package is in (asus) OptWare, but keniel/Linux missing support for:

- Linux >= 2.6.20 with I/O accounting support (CONFIG_TASKSTATS, CONFIG_TASK_DELAY_ACCT, CONFIG_TASK_IO_ACCOUNTING): Not found

ARM rt-ac68u

thanks.

 

[TeMpL]

https://bbs.archlinux.org/viewtopic.php?id=38646

""I've been in contact with the author of iotop.py, and the "fix" was to enable four options in the kernel:

CONFIG_TASKSTATS=y
CONFIG_TASK_DELAY_ACCT=y
CONFIG_TASK_XACCT=y
CONFIG_TASK_IO_ACCOUNTING=y

So, I synced my ABS tree, copied the kernel26 stuff to another directory, and edited the config file to include these four options. There is a spot for them, just replace the line

# CONFIG_TASKSTATS is not set


Could this be done for our kernels ?

 

[RMerlin]

Depends. Any reason why this would be useful to a router?

 

[maryhit]

Hi Merlin, the Asus router wizard

Some of us take things to extreme. Myself I use it like a NAS.
Sometimes HDD starts running like crazy, and using top I can't understand what's killing the hdd.

Is there other better way than iotop (already in entware) ?

Thanks in advance for your reply.

 

[ryzhov_al]

CONFIG_TASKSTATS=y
CONFIG_TASK_DELAY_ACCT=y
CONFIG_TASK_XACCT=y
CONFIG_TASK_IO_ACCOUNTING=y

Even after this fix, we still can't control I\O priority by ionice or similar tools. We've got noop scheduler, which is hard-compiled. No any other schedulers (like cfq, deadline or any other) are available:

admin@RTN66U:/tmp/home/root# cat /sys/block/sda/queue/scheduler
[noop]

IMHO, adding other I\O schedulers for router is overkill.

 

[ngoonee]

Just installed iotop from entware and realized this issue. It would be helpful to have this enabled in the kernel config for those using routers as an all-in-one (including NAS) as mentioned above. Not sure there are any downsides, either.