Output of ps and gtop differ. Surprising gtop behaviour.
- From: Juan Toledo <toledo users sourceforge net>
- To: gnome-devel-list gnome org
- Subject: Output of ps and gtop differ. Surprising gtop behaviour.
- Date: Mon, 14 May 2001 11:21:09 +0200
I am developing EtherApe, which is a network monitor application.
Being a monitor which also provides some nice eye candy, a lot of people
run it continuously on their machines, and so I have to be very careful
about memory leaks.
Using gtop and several stress tests I was pretty sure there were no
more leaks, but recently I've realized that there are strange things going on:
-- ps and Gtop output differ. For the same progam instance, I have
Size Rss Resident Share
---- ---- -------- -----
PS 9360 3524
GTOP 4104 3524 3528 1928
-- For a fresh started etherape process, gtop reports
5356 for size, rss and resident; and 3896 for shared.
Then, after some time the numbers magically come down almost
a couple of megabytes.
Can somebody explain to me what is going on? If I understand correctly
the size field should report all virtual memory that has been allocated
to a process (which is what I want to track to make sure I am not leaking)
and there should be no way by which the program reduces the initial usage.
And why is there such a difference with the vss reported by ps? Which
program should I trust?
Somebody please enlighten me.
EtherApe, a graphical network monitor modeled after etherman
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