update-manager --no-focus-on-map ??

Oliver Grawert ogra at ubuntu.com
Sat Jan 2 12:49:34 UTC 2016

Am Freitag, den 01.01.2016, 18:40 -0800 schrieb rikona:
> Hello Oliver,
> Thursday, December 31, 2015, 3:30:50 AM, Oliver wrote:
> > hi,
> > Am Dienstag, den 29.12.2015, 14:52 -0800 schrieb rikona:
> >> (1) In htop, I'm getting quite a few instances of "update-manager
> >> --no-focus-on-map". They seem to build up over time and, according to
> >> top, are using up memory [ ~5% each] -- and I eventually seem to get
> >> memory problems. (2) Also over time I seem to lose the update manager
> >> GUI - it shows as a running icon with alt-tab, but selecting it gives
> >> me nothing.
> >> 
> >> How can I fix 1 & 2 re the update mgr? Are 1& 2 related?
> > are you sure you configured htop to not show userland threads by
> > default in the settings ? else you will see multiple instances of
> > apps that do a fork, even if they all use the exact same system
> > resources 
> I didn't understand that option so kept the default, not checked.
> Are you saying that the large amount of memory usage in the many
> instances shown in htop is actually NOT large and equal to only one of
> the instances?
htop does by default show all forks of non-kernel threads of a running
process ... usually these forks use all the same address space and same
RAM (you will notice their identical VIRT/RES/SHR values for memory
usage, only the parent process allocates the actual RAM that gets used
here). this RAM isnt actually used multiple times, so to avoid the
confusing display and to be able to easier see actual RAM usage the app
has the "Hide Userland Threads" option that will only show actually used
resources and hide the forks.


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