Hello, On Wed, Mar 20, 2024 at 07:02:16PM +0800, Kemeng Shi wrote: > /* all writeback info of bdi is successfully collected */ > # cat /sys/kernel/debug/bdi/252:16/stats: > BdiWriteback: 448 kB ... > > /* per wb writeback info is collected */ > # cat /sys/kernel/debug/bdi/252:16/wb_stats: > cat wb_stats > WbCgIno: 1 ... > > /* monitor writeback info */ > # ./wb_monitor.py 252:16 -c > writeback reclaimable dirtied written avg_bw > 252:16_1 0 0 0 0 102400 > 252:16_4284 672 820064 9230368 8410304 685612 > 252:16_4325 896 819840 10491264 9671648 652348 > 252:16 1568 1639904 19721632 18081952 1440360 > > > writeback reclaimable dirtied written avg_bw > 252:16_1 0 0 0 0 102400 > 252:16_4284 672 820064 9230368 8410304 685612 > 252:16_4325 896 819840 10491264 9671648 652348 > 252:16 1568 1639904 19721632 18081952 1440360 > ... Ah you have the example outputs here. It'd be nice to have these in the commit messages too. I'm not sure about the last patch but patchset looks good to me otherwise. I don't feel particularly enthusiastic about adding more debugfs files especially given that some distros disable debugfs completely, but no harm in adding them either. Thanks. -- tejun
