How to change kernel.msgmni parameter?

I would like to test Enduro/x on my ubuntu box, using the getting started guide provided with the product

It seems that i need to increase values for kernel.msgmni, kernel.msgmax and kernel.msgmnb.

Actually Enduro/x doesn't start and complain with log messages witch let me think that this kind of tuning is necessary according to the Enduro/x admin manual.

I have customized /ect/sysctl.conf for that, but when i try to apply the changes Ubuntu Linux complains that kernel.msgmni is an invalid parameter ... i try to set it to 40000 when it's 32000 now (check with ipcs), the two other values were changed fine. Can somebody tell me why ?

My Linux install : Ubuntu Focal Fosa : Linux MyOwnPC 5.4.0-89-generic #100-Ubuntu SMP Fri Sep 24 14:50:10 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

Best regards

1 Answer

msgmni has a max value of 32768 unless you add pcmni_extend as a command-line option for the kernel.

Set it by adding the ipcmni_extend option to GRUB_CMDLINE_LINUX line in /etc/default/grub and update grub with sudo update-grub before rebooting

2

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