Linux – How to increase size of Terminal on Linux

linuxterminaltop

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.

Best Answer

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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Linux – How to increase MTU size on Linux 2.6

I'd warn you not not to do it unless you are really certain, that this is what you really want (like having two servers directly connected by cross-over cable over Gigabit Ethernet interfaces).

There's already PMTUD algorithm, which is able to deduce MTU size across the path. And when rising MTU above that you'll either experience some packet loss or will make network-administrating guys sad, because their routers and switches will have to fragment your packets using CPU as opposed to fast routing with ASICs.

If that's what you want, then you may want to see http://wiki.archlinux.org/index.php/Jumbo_Frames, which has some nice numbers and hints. The basic command is ip link set mtu 4000 dev eth0 (or ifconfig eth0 mtu 4000 for older ifconfig tool) for 4K packets.

Linux Bash – How to Sort du -h Output by Size

As of GNU coreutils 7.5 released in August 2009, sort allows a -h parameter, which allows numeric suffixes of the kind produced by du -h:

du -hs * | sort -h

If you are using a sort that does not support -h, you can install GNU Coreutils. E.g. on an older Mac OS X:

brew install coreutils
du -hs * | gsort -h

From sort manual:

-h, --human-numeric-sort compare human readable numbers (e.g., 2K 1G)

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Related Solutions

Linux – How to increase MTU size on Linux 2.6

Linux Bash – How to Sort du -h Output by Size

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