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Peeking into Linux kernel-land using /proc filesystem for quick’n’dirty troubleshooting | Tanel Poder Consulting #23

Open utterances-bot opened 3 years ago

utterances-bot commented 3 years ago

Peeking into Linux kernel-land using /proc filesystem for quick’n’dirty troubleshooting | Tanel Poder Consulting

This blog entry is about modern Linuxes. In other words RHEL6 equivalents with 2.6.3x kernels and not the ancient RHEL5 with 2.6.18 kernel (wtf?!), which is the most common in enterprises unfortunately. And no, I’m not going to use kernel debuggers or SystemTap scripts here, just plain old “cat /proc/PID/xyz” commands against some useful /proc filesystem entries. Troubleshooting a “slow” process Here’s one systematic troubleshooting example I reproduced in my laptop. A DBA was wondering why their find command had been running “much slower”, without returning any results for a while. Knowing the environment, we had a hunch, but I got asked about what would be the syste

https://tanelpoder.com/2013/02/21/peeking-into-linux-kernel-land-using-proc-filesystem-for-quickndirty-troubleshooting/

vishalkanaujia commented 3 years ago

great knowledge shared. Thanks so much.

wubo0067 commented 1 year ago

Very good, thank you!

pguggila commented 1 year ago

Very helpful. Thanks for sharing this info.