On 29 Dec 2021, at 19:51, Paolo Valerio wrote:
> Eelco Chaudron <[email protected]> writes:
>
>> This patch adds a series of NetLink flow operation USDT probes.
>> These probes are in turn used in the upcall_cost Python script,
>> which in addition of some kernel tracepoints, give an insight into
>> the time spent on processing upcall.
>>
>> Signed-off-by: Eelco Chaudron <[email protected]>
>> ---
>> v2:
>> - Fixed path naming
>> - Fixed some typos
>> - Updated script header
>>
>
> TIME seems a bit misaligned, althought it's not that important (it's
> more a reference rather than a pretty print):
Guess it depends on how long your system has been up and running ;)
> EVENT COMM PID CPU TIME
> EVENT DATA[dpif_name/dp_port/pkt_len/pkt_frag_len]
> [openvswitch__dp_upcall] iperf 1959468 [010] 119564.082192551:
> ovs-system 2 118 0
> [openvswitch__dp_upcall] iperf 1959499 [004] 119564.082192633:
> ovs-system 2 118 0
> ...
>
Thanks for reviewing Paolo!
> Other than that,
> Acked-by: Paolo Valerio <[email protected]>
>
>> Documentation/topics/usdt-probes.rst | 86 ++
>> lib/dpif-netlink.c | 16
>> utilities/automake.mk | 4
>> utilities/usdt_scripts/upcall_cost.py | 1787
>> +++++++++++++++++++++++++++++++++
>> 4 files changed, 1892 insertions(+), 1 deletion(-)
>> create mode 100755 utilities/usdt_scripts/upcall_cost.py
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