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sudo perf record -F 99 -p 3887 -g -- sleep 30 sudo perf report -n --stdio 生成火焰图 git clone https://github.com/brendangregg/FlameGraph.git perf script -i perf.data &> perf.unfold ./stackcollapse-perf.pl perf.unfold &> perf.folded./flamegraph.pl perf.folded > perf.svg
红/蓝火焰图
164 perf record -F 99 -ag -- sleep 30 165 perf script > test1 166 ls 167 perf record -F 99 -ag -- sleep 30 168 perf script > test2 169 cd FlameGraph/ 170 cd .. 171 ./FlameGraph/stackcollapse-perf.pl test1 > test1 .folded 172 ./FlameGraph/stackcollapse-perf.pl test2 >test2.folded173 ./FlameGraph/difffolded.pl test1 .folded test2.folded | ./FlameGraph/flamegraph.pl > diff.svg
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