On 12/8/08 8:48 AM, "Ayer, Paul W" <[EMAIL PROTECTED]> wrote:
> I have seen notes before that "top lies" but; Like a rug. > Looking at a top display sorted by %CPU I see some processes using over > 200 or 300 % CPU. > This LPAR has 4 IFL's installed and the Linux has access to all four. > Can we use the %cpu below 400 % as an indicator that we are not using > all four at that moment? Probably not. Work is distributed on all available CPUs by the Linux scheduler. You're using less that the total capacity of the four CPUs, but I don't think there are any guarantees that you're only using 3 out of the 4 (ie you could take #4 away without problems). > Also if the %cpu says lets say ... 382% are we using 100% of two CPU's > and 82% of the third maybe? See above. You can conclude that you are using 382% of the total 400% at this instant. Beyond that, you'd need a performance monitor of some sort. ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
