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InterviewSolution
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What is IRIX Mode in top command? |
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Answer» CPU usage percentage is very common confusion in LINUX. Sometimes, User or new SYSTEM ADMINISTRATOR complaint that CPU is SHOWING >100% which is some configuration issues or VM issues. But this is not true. Linux treats all processors individually and when you RUN top common, it should CPU usage per processor wise. Here, System is not considering all processors as a whole and showing usage of each processor individually which lead to total PU utilization to >100%. To resolve this confusion, IRIX mode has been introduced. This is the DEFAULT mode of Linux now. In Irix Mode, System considers all processors as a whole and CPU usage can vary from 0 to 100 only. IRIX feature was introduced in Solaris and adopted by Linux later. |
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