On 8/19/21 10:50 PM, kernel test robot wrote:
Greeting,
FYI, we noticed a -21.3% regression of netperf.Throughput_tps due to commit:
commit: b89fbfbb854c9afc3047e8273cc3a694650b802e ("bpf: Implement minimal BPF perf link")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
Could you do a test again to double check?
The above patch is related to bpf perf_event area.
It should not have any impact with netperf.
in testcase: netperf
on test machine: 192 threads 4 sockets Intel(R) Xeon(R) Platinum 9242 CPU @ 2.30GHz with 192G memory
with following parameters:
ip: ipv4
runtime: 300s
nr_threads: 16
cluster: cs-localhost
test: TCP_CRR
cpufreq_governor: performance
ucode: 0x5003006
test-description: Netperf is a benchmark that can be use to measure various aspect of networking performance.
test-url: http://www.netperf.org/netperf/
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