Messages in this thread | | | Date | Wed, 7 Dec 2022 15:32:56 -0800 | From | Jakub Kicinski <> | Subject | Re: [PATCH linux-next] net: record times of netdev_budget exhausted |
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On Wed, 7 Dec 2022 20:30:08 +0800 (CST) yang.yang29@zte.com.cn wrote: > > Presumably, modern tracing techniques can let you do what you want > > without adding new counters. > > By the way, should we add a tracepoint likes trace_napi_poll() to make > it easier? Something likes: > if (unlikely(budget <= 0 || > time_after_eq(jiffies, time_limit))) { > sd->time_squeeze++; > + trace_napi_poll(budget, jiffies, time_limit); > break; > }
In my experience - no this is not useful.
Sorry if this is too direct, but it seems to me like you're trying hard to find something useful to do in this area without a clear use case. We have coding tasks which would definitely be useful and which nobody has time to accomplish. Please ask if you're trying to find something to do.
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