[arch-general] System terribly slow
ralph at inputplus.co.uk
Sat Dec 4 09:35:47 UTC 2021
> Superficial symptoms are a general slowness. I'm using just IceWM and
> `startx` to initialize the GUI, and even logging into my account
> previous to that takes almost a minute to get done.
Once logged in, run ‘LC_ALL=C dstat -tap’ and leave it to settle down
with nothing happening. Then start any of the complex GUI programs you
mentioned which take a long time. Observe dstat's output to see where
there's a bottleneck.
$ LC_ALL=C dstat -tap
----system---- --total-cpu-usage-- -dsk/total- -net/total- ---paging-- ---system-- ---procs---
time |usr sys idl wai stl| read writ| recv send| in out | int csw |run blk new
I doubt CPU usr and sys will be the problem; if they are then it
suggests you CPU got slower. If CPU wai(t) it high then the CPUs are
stalled from doing work waiting for I/O, e.g. disk reads. Lots of
paging could show a problem some of the machine's RAM not being used.
Seeing those figures might give you, and us on the list, some idea.
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