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[openEuler 22.03] crct10dif校验算法劣化

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2021-11-27 14:33

问题现象:1、在4.19内核中,使用crct10dif_ce算法时,使用单job跑io时,请求带宽只有200M左右;通过top命令可以观察到,当前跑fio的cpu利用率已经达到100%,因此当前我们怀疑ce算法比较消耗cpu
2、通过增加线程数的方式,fio带宽可以达到标准值
3、以前neon算法,使用单job(单线程)进行fio测试,带宽可以达到标准值(1G),而且跑fio的cpu占用率只有80%左右

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luwei06 created任务
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Hi luwei_os, welcome to the openEuler Community.
I'm the Bot here serving you. You can find the instructions on how to interact with me at
https://gitee.com/openeuler/community/blob/master/en/sig-infrastructure/command.md.
If you have any questions, please contact the SIG: Kernel, and any of the maintainers: @XieXiuQi , @YangYingliang , @成坚 (CHENG Jian) .

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