Is there any ready-to-use solution to log the memory consumption from the start of the system? I'd like to log the data to simple text file or some database so I can analyze it later.
I'm working on Linux 2.4-based embedded system. I need to debug the problem related to memory consumption. My application automatically start on every system start. I need the way to get the data with timestamps from regular intervals (as often as possible), so I can track down problem.
The symptoms of my problem: when system starts it launched my main application and GUI to visualize the main parameters of the system. GUI based on GTK+ (X server). If I disable GUI and X server then my application works OK. If I enable GUI and X server it does not work when I have 256 MiB or 512 MiB of physical memory installed on the motherboard. If I have 1 GiB of memory installed then everything is OK.
The following script prints time stamps and a header.
#!/bin/bash -e
echo " date time $(free -m | grep total | sed -E 's/^ (.*)/\1/g')"
while true; do
echo "$(date '+%Y-%m-%d %H:%M:%S') $(free -m | grep Mem: | sed 's/Mem://g')"
sleep 1
done
The output looks like this (tested on Ubuntu 15.04, 64-bit).
date time total used free shared buffers cached
2015-08-01 13:57:27 24002 13283 10718 522 693 2308
2015-08-01 13:57:28 24002 13321 10680 522 693 2308
2015-08-01 13:57:29 24002 13355 10646 522 693 2308
2015-08-01 13:57:30 24002 13353 10648 522 693 2308