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Top Forums UNIX for Advanced & Expert Users Troubleshooting sudden high memory usage Post 303042158 by anaigini45 on Tuesday 17th of December 2019 12:45:53 AM
Old 12-17-2019
Troubleshooting sudden high memory usage

Hi,


This morning there was an app that caused a sudden spike in I/O and memory usage in the server. We found the reason for the I/O, however the memory spike was something new, as it had never happened before.

I figured out what caused the memory spike, however, how do I investigate why the sudden memory spike (which has never happened before)?


The application is called Redmine and runs on Ruby.


Is it possible that we have to configure limits.conf? Or some file from the application side?


Best Regards,
Aigini

Last edited by anaigini45; 12-17-2019 at 02:00 AM..
 

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WHACK(1)						      General Commands Manual							  WHACK(1)

NAME
whack - mangle requests to a printer or damage a printer SYNOPSIS
whack [-h | -v] [-i] [-w] ids whack [-j] [-v] [-s] [-w] printers DESCRIPTION
whack mangles line printer requests or damages line printers. When the first form of the command is used, the printed output of the job is mangled as specified by the options. When the second form of the command is used, the printer itself is damaged as specified by the options. OPTIONS
-h Horizontal. Make the output run across the page horizontally, ignoring linefeeds and other form movement characters or embedded commands. -v Vertical. Make the output run vertically in one column (the current column) down the paper, ignoring any form movement characters or embedded commands. -i ISO mode. Select, at random, a different ISO code set to use while printing the rest of the job. -w Write a taunting message on the user's terminal after the jobs have been whacked. If the user is not logged in locally, then mail will be sent instead. -j Jam. Self-explanitory. -v Voltage surge. Send a voltage spike down the transmit lead(s) of the printer. Physical contact with the printer should be avoided while using the -v option. -s Spit. Causes the printer to rapidly eject it's paper load into the output bin. Depending upon the speed of the ejection, a few characters could actually print on each page. FILES
/etc/termcap HISTORY
Written by Eric L. Pederson <eric@bofh.org.uk>. 28 September 1995 WHACK(1)
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