106434 - Plugins do not unload

Status: VERIFIED FIXED

(Core Graveyard :: QuickLaunch (AKA turbo mode), defect)

Description

[Oscar van Vliet]

When finishing with Mozilla in Turbo mode, the OJI (Java) plugin and probably
the quicktime plugin, as far as I can tell from simple memory use, stay active
and loaded in RAM.

While quicklaunch is a very useful feature, the files that stay in RAM should
perhaps be limited to what is needed to start a browser or mailnews window. The
rest of system resources should be released IMHO.

I found another unloading bug in 95130 which has a comment that may bear some
light on this (Greg Miller 2001-08-13 14:12):
>Correct me if I'm out-of-date or wrong, but I don't believe Mozilla currently
>unloads any libraries once they've been loaded. It's also my understanding that
>folders are never closed and unloaded, either.

Putting aside what isn't needed might reduce footprint substantially.

Comment 1

[timeless]

i think this is wontfix fodder. Turbo is a compromise: sacrifice memory to
increase load speed.  Nothing about that compromise says we should make users
pay again to load java.

Comment 2

[Brian Rogers]

What about time-based unloading?
Unload plugins which have gone unused for X minutes.
Do the same with folders.

Push cache entries from memory to disk as well.

After a couple hours, these things probably wouldn't be in memory anyway, and
would have to be paged back in again.  That could be slower than reloading the
plugins anew.

Should seperate bugs be filed?

Comment 3

[timeless]

if your os doesn't do that (swapping LeastRecentlyUsed app memory to disk) on
its own buy a better one

Comment 4

[Bill Law]

What timeless said.

We can't "unload" unless xpcom/componenter-manager, etc. let us.  Setting target
milestone to future.

Comment 5

[Boris Zbarsky [:bzbarsky]]

confirming RFE.

Comment 6

[timeless]

*** Bug 121345 has been marked as a duplicate of this bug. ***

Comment 7

[R.K.Aa.]

*** Bug 141530 has been marked as a duplicate of this bug. ***

Comment 8

[R.K.Aa.]

*** Bug 145013 has been marked as a duplicate of this bug. ***

Comment 9

[Stephen P. Morse]

I'm sure that the new turbo mode introduced by the checkin for bug 98673 has 
fixed this as well.  Therefore closing out as fixed.  Please re-open if I'm 
wrong.

Comment 10

[Henrik Gemal]

java isn't unloaded

Comment 11

[Stephen P. Morse]

Is java unloaded when the browser is closed down w/o turbo?  If not, then this 
is not a turbo bug.  If so, then it is unloaded when the browser is closed down 
with turbo.

Comment 12

[Henrik Gemal]

with build 20020528 it works fine. Java is unload when turbo is on.

Comment 13

[Grace Bush]

verified with trunk build 2002052809 build