When I use less read from pipe,even i just output a empty new line to less, the bash running less gets high cpu usage ( picture 1, picture 2 ), and less itself didn't use many cpu, when i quit less, cpu usage of bash drop to normal ( picture 3 ) When I use less read from file,the bash running less gets low cpu usage How can I debug this? I post these three snapshot on imgur if you can't see them: https://imgur.com/a/mDfH8Dl
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