On Fri, 2024-11-29 at 09:31 +1100, Stephen Morris wrote:
> When I run IOTOP, the first column is TID, what is TID? This display
> is showing in excess of 50 entries for Thunderbird where all of them
> have a unique TID value, is Thunderbird really starting that many
> threads?


Very likely.  Thunderbird, and web browsers are huge apps.  One might
say that Thunderbird is very bloated for something that does email.  I
do, judging it by how slow it is compared to other similar apps.

Behind the scenes what is it doing?  You'll never know everything but
there's a lot going on if you start to think about it...

it's checking for mail, often repeatedly
it's sorting mail
it's managing its cache, in every mail folder
it's checking its calendar
it's probably reporting private stats to the internet
it's probably checking for updates
it's drawing its interface
it's rendering an email into some fancy display
it's updating parts of its interface as you do things
it's listening for what you want to do with it
you're interacting with it

Lot's of what it does is a bunch of separate tasks, rather than just
one processing stepping through a series of things.

You've only got to wiggle the mouse around on top of an app's window,
without even clicking on anything, to see its CPU use go up in top. 
Apps are only somewhat idle when you think they're just sitting there
doing nothing.
 
-- 
 
uname -rsvp
Linux 3.10.0-1160.119.1.el7.x86_64 #1 SMP Tue Jun 4 14:43:51 UTC 2024 x86_64
 
Boilerplate:  All unexpected mail to my mailbox is automatically deleted.
I will only get to see the messages that are posted to the mailing list.
 

-- 
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