Hi Rezki, > From: Uladzislau Rezki <urezki@xxxxxxxxx> > Sent: Tuesday, March 21, 2023 11:16 PM > [...] > > > > > > If possible, may I know the steps, commands, and related parameters to > produce the results above? > > Thank you! > > > Build the kernel with CONFIG_RCU_TRACE configuration. Update your > "set_event" > file with appropriate traces: > > <snip> > XQ-DQ54:/sys/kernel/tracing # echo rcu:rcu_batch_start rcu:rcu_batch_end > rcu:rcu_invoke_callback > set_event > > XQ-DQ54:/sys/kernel/tracing # cat set_event rcu:rcu_batch_start > rcu:rcu_invoke_callback rcu:rcu_batch_end XQ-DQ54:/sys/kernel/tracing # > <snip> > > Collect traces as much as you want: XQ-DQ54:/sys/kernel/tracing # echo 1 > > tracing_on; sleep 10; echo 0 > tracing_on Next problem is how to parse it. Of Thanks for the detailed steps to collect the related testing results. > course you will not be able to parse megabytes of traces. For that purpose i > use a special C trace parser. > If you need an example please let me know i can show here. > Yes, your example parser should save me from a huge amount of traces. ;-) Thanks so much for your sharing. - Qiuxu > -- > Uladzislau Rezki
