iotop like tool for mtd devices
mkl at pengutronix.de
Wed Feb 7 11:31:07 PST 2018
On 02/07/2018 07:21 PM, Marc Kleine-Budde wrote:
> On 02/07/2018 02:40 PM, Marc Kleine-Budde wrote:
>> as iotop doesn't work on (NAND) mtd devices, is there a tool, or an API
>> to query the number of read or written bytes per mtd?
> For the record: switching on all the needed kernel config options as
> stated in the iotop manpage helps a lot.
The kernel makes the information available at /proc/$$/io. However
"read_bytes" and "write_bytes" seems not to be accurate for mtd devices.
Poking around a bit in the kernel code makes me wonder if some
task_io_account_read(), task_io_account_write() at the right places
would make the accounting better?
Pengutronix e.K. | Marc Kleine-Budde |
Industrial Linux Solutions | Phone: +49-231-2826-924 |
Vertretung West/Dortmund | Fax: +49-5121-206917-5555 |
Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de |
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