I believe I've found the solution to excessive swapping with 1GB of memory.
There is a script "/usr/lib/pm-utils/power.d/laptop-mode" that is setting too
low values to VM tunable kernel parameters when on AC power:
dirty_background_ratio=5
dirty_ratio=10
The line 69 of the script is the following:
write_values 0 10 5 500
Changing the line with these values resulted in being able to run the system
with 1GB without swap partition and good performance even with many large
processes running.
write_values 0 90 20 500
This sets the VM subsystem with these values:
dirty_background_ratio=20
dirty_ratio=90
I think it needs some attention.
Thanks,
Gustavo Rybarczyk.
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