Memory usage and cached memory
we have a Linux server where we are running Tomcat and Apache
Our Sys Admins are telling us that there is no memory left on the box and they need to reboot the box
This is the server uname output
Linux 2.6.18-92.el5 #1 SMP Fri May 23 23:40:43 EDT 2008 x86_64 x86_64 x86_64 GNU/Linux
Using vmstat,nmon and free, we get the following readings
vmstat 10 5
procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu------
r b swpd free buff cache si so bi bo in cs us sy id wa st
1 0 124 344360 262384 4688888 0 0 0 16 0 0 10 1 89 0 0
1 0 124 344136 262384 4688892 0 0 0 49 1043 2679 7 0 93 0 0
1 0 124 344392 262384 4688892 0 0 0 74 1074 2551 7 0 93 0 0
1 0 124 344360 262384 4688896 0 0 0 58 1033 2645 8 1 91 0 0
1 0 124 349484 262384 4688896 0 0 0 26 1039 2633 7 0 92 0 0
nmon
RAM High Low Swap
Total MB 7985.7 0.0 7985.7 8128.0
Free MB 343.2 0.0 343.2 8127.9
Free Percent 4.3% 0.0% 4.3% 100.0%
MB MB MB