On Tue, 24 Oct 2023 at 21:56, Kienan Stewart <kstew...@efficios.com> wrote:
> Hi Lin, > > could you keep the lttng-dev list in CC on your replies in the future? > Yes, sure. > > > On 2023-10-24 09:25, Lin ArcX wrote: > > Thanks for your response. i fixed the names. here is new commands: > > # enable event for traced functions > > sudo lttng enable-event --kernel > irq_handler_entry,napi_poll,net_dev_queue > > > > # different name with kernel > > sudo lttng enable-event --kernel > > > net_if_rx_entry,net_if_rx_ni_entry,net_napi_gro_receive_entry,net_if_receive_skb_list_entry,net_if_receive_skb > > > > Now In new tracefile i can see a lot of new events come. but still can't > > see any trace from these: > > > > net_if_rx_ni_entry > > net_napi_gro_receive_entry > > net_if_receive_skb_list_entry > > > This looks fine to me. > > On a linux 4.19 system, I ran a test with using lttng-modules 2.12.14. I > saw events for "net_napi_gro_receive_entry". > > In parallel with the LTTng tracing session, I ran > > perf stat -e > > net:netif_rx_ni_entry,net:netif_receive_skb_list_entry,net:napi_gro_receive_entry > > The above allowed me to confirm that there were > "net:napi_gro_receive_entry_events", but no "net:netif_rx_ni_entry" or > "net:netif_receive_skb_list_entry" occurrences in my test. > > Are you seeing a situation where another tool is recording occurrences > of the events that you think aren't being seen during your tracing session? > No, nothing, I'm running my client/server application inside wsl and no other tools are running. > > thanks, > kienan >
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