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RobertDudley

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13 years ago

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RobertDudley

2 Intern

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448 Posts

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February 25th, 2014 08:00

VMAX FA proc % busy doesnt add up

I am looking at the HEAT map for a VMAX and it is showing two FA processors at 80% busy and when I open it up to show both ports they dont match up.  The overall busy is running right around 80% however port 0 is showing 14% and port 1 2-4% busy.  The data chart is at the default which is to show the average for the time.

  • RobertDudley

    2 Intern

    •

    448 Posts

    324

    1

    Posted February 25th, 2014 08:00

    Thanks Quincy as usual a good answer that makes sense now.  You were pretty darn fast too.

  • Quincy561

    1281 Posts

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    1

    Posted February 25th, 2014 08:00

    The port utilization is looking at the available pipe bandwidth, not CPU usage.  Your CPU could be 100% busy doing 512 byte IOs, while the 8gb pipe (up to 800 MB/sec) could just be doing a small amount of MBs/sec, so the ports will show low utilization.