hi to all
i would want to get kernel debugging informations in order to get more
information and understand why my migration times are so slow in my
i only know that i must boot with kdb=on on the kernel parameters, so i
have many questions:
- do i have to enable kdb on all node? if so , how to do that on
slave node which are booting via PXE on another kernel (where can i
pass this kernel option (kdb=on) for slave nodes?
- after that, when kernel debugging is enabled, what have i to do?
i have understood that i must launch the kdb command or get a kdb
prompt?... but i didnt' find any kdb command on my debian system
how do i place every node into kdb and get the kdb prompt?
and last, from the kdb prompt, how do i collate the informations in a file?
thanks for any debuggins tips and tricks
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