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I have a 48core linux box. I would like to monitor per core cpu usage. However when I use top and press 1 I get an error message "Sorry, terminal is not big enough" Is there anyway I can increase the terminal window size. Max (putty) my laptop can do is ~46 lines. Increasing window size in putty or shell's ROWS variable hasn't helped.

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The answer depends upon which terminal emulator you are running. Do I understand correctly, that you are running PuTTY on Microsoft Windows to log into your Linux server? – Rob May 25 '11 at 23:35
Yes, I am using PuTTY on Windows – user209051 May 26 '11 at 0:10
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3 Answers

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You can reduce your font size in putty to fit more lines. Using putty, I can see 64-cores in top on a 1920x1200 laptop monitor. You can also look into another way of looking at individual processor statistics.

Is it absolutely essential to see each CPU core's statistics? You could try mpstat -P ALL (installed as part of the sysstat package).

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My screen is only 1280*800. Setting Font to 8pt didn't help, but if you select the option in the answer below, the effective font size seems < 8pt. – user209051 Jun 2 '11 at 2:32
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I had to change rows to 60 under Windows option and set "When window is resized:" option to "Change the size of font" to get it to work

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A simple solution might be using xterm, which by default uses small font. This way, I can observe 64 cores at 1080 vertical resolution.

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