add func for performance

zhangmeng

2024-02-05 a3df1ad41bce6d8d3094014c6e369072e594e7be

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ipcrm -a
rm *.txt
./test_lostdata
sort -n c.txt  > c1.txt
sort -n p.txt  > p1.txt
diff -u p1.txt c1.txt