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Full Discussion: Performance Bottleneck in server, Need help
Top Forums UNIX for Advanced & Expert Users Performance Bottleneck in server, Need help Post 302992500 by smart_guy471 on Sunday 26th of February 2017 07:32:28 PM
Old 02-26-2017
Quote:
Originally Posted by Aia
Your bottleneck is IO. Compare between under load and normal load:
20.9%wa -> That's the percentage the CPU had to wait for IO. (Slow)
0.1%wa -> Normal load.

I am going to assume that this is a Linux kernel operating system based on how top looks; you did not say:
cached means memory not used and since it would be wasted, the kernel is using it for caching disk. At any time needed by any application use, it will be taken. You should not be concerned with it. You should considerate it free memory.

Sorry I forgot to mention that its Red Hat Linux & We are running this from Amazon Cloud.. so not sure if the IO problem is due to the box being in cloud. Is there a way to isolate which process is getting affected due to IO problem ?

Regards,
Jey
Last edited by smart_guy471; 02-26-2017 at 08:32 PM.. Reason: typo
 

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LEARN ABOUT DEBIAN

wmbubble

WMBUBBLE(1x)															      WMBUBBLE(1x)

NAME

       wmbubble - system load monitor

SYNOPSIS

       wmbubble [options] [program1] [program2]

DESCRIPTION

       This  manual  page  documents briefly the wmbubble command.  This manual page was written for the Debian GNU/Linux distribution because the
       original program does not have a manual page.

       wmbubble is a dockapp-style CPU, memory, swap and load average monitor.	Based on the GNOME BubbleMon applet, this program has been consid-
       erably improved.

       The  higher  the  water level, the more memory is in use. The more profuse the bubbles, the higher the CPU usage. There is also a real-time
       CPU percentage display.

       When the mouse is moved into the window, the display will change to show the load history, or, if the right shift is held, the current mem-
       ory  usage.  If	you press the right mouse button, the window will freeze in that state. You can unfreeze the display by pressing the right
       mouse button again.

       program1 and program2 are the programs to spawn when either the left or middle mouse button is pressed, respectively.

OPTIONS

       -d     disable swimming duck

       -u     disable upside-down duck

       -c     disable CPU meter

       -m     disable memory screen

       -p     use alternative color scheme in memory info screen

       -k     display memory and swap statistics in megabytes

       -h     display help

AUTHOR

       wmbubble was written by timecop <timecop@japan.co.jp>

       This manual page was written by John H. Robinson, IV <jaqque@debian.org>, for the Debian GNU/Linux system (but may be used by others).

								  March 28, 2004						      WMBUBBLE(1x)
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