Why are there many processes listed under the same title in htop?

Posted by javanix on Super User See other posts from Super User or by javanix
Published on 2010-03-09T23:11:05Z Indexed on 2010/03/12 11:37 UTC
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linux

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Performance

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ubuntu-9.10

Can anyone explain to me why there are sometimes 10 or 15 processes with the same title and "stats" listed in htop? I'm guessing there are multiple threads running - but that many of them obviously couldn't be running concurrently.

Is there any sort of performance hit taken if a process uses say, 15 non-concurrent threads vs. 10 non-concurrent threads?

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