[Pkg-mailman-hackers] Bug#891937: Bug#891937: Bug#891937: mailman3-full install issues

[Pierre-Elliott Bécue]

Le vendredi 19 octobre 2018 à 14:02:07+0200, Pierre-Elliott Bécue a écrit :
> Le vendredi 19 octobre 2018 à 12:32:40+0200, Markus Gschwendt a écrit :
> > On Thu, 2018-10-18 at 13:20 +0200, Pierre-Elliott Bécue wrote:
> > > Le jeudi 18 octobre 2018 à 12:54:20+0200, Markus Gschwendt a écrit :
> > > > On Thu, 2018-10-18 at 11:02 +0200, Pierre-Elliott Bécue wrote:
> > > > > Le mardi 16 octobre 2018 à 14:39:38+0200, Markus Gschwendt a écrit :
> > > > > > 
> > > > 
> > > > ...
> > > > > What is a "huge memory footprint" when translated to numbers?
> > > > 
> > > > I would say for a VM only running the list software with a few not too
> > > > busy lists and exim light 128MB should sufficient.
> > > > With a mailman-web-gui _not_ more than 250-500MB.
> > > 
> > > You misunderstood my question.
> > 
> > Sorry. You are right. I did not understand it that way.
> > 
> > > How much RAM, according to your friend, does mailman3 use on his system?
> > 
> > 700MB only for mailman3
> > See the Post of him (mailman-users list, Thursday, 13 September 2018
> > 2:05 p.m.)
> > https://lists.mailman3.org/archives/list/mailman-users@mailman3.org/thr
> > ead/5LZNBMEMYPZHW5XE7KMPUOAAECK3KP6D/
> > 
> > I had a short chat with him yesterday. He didn't answer the comment
> > of  Mark Sapiro because of lack of time at the moment. But in short:
> > There is not such a thing like 'idle memory'. It is RSS, not virtual
> > memory. And mailman3 releases the memory not before exiting.
> > 
> > Myself i was not able to run exim4-light +mailman3 +web-gui packages on
> > a VM below ~1.8GB RAM.
> > 
> > My production mailserver exim4-heavy +mailman2 +mailman-web-gui
> > +dovecot +spamassassin +clamav is running on 3GB RAM, where most of the
> > memory is used by clamav+sa. Only ~50MB by mailman2.
> 
> I'm quite surprised by what you say.
> 
> My mailman3 instances takes 50MB RSS RAM (it's running since june the 2nd)
> list     15305  0.0  0.3 172120 50232 ?        Ss   juin02   0:01 /usr/bin/python3 /usr/lib/mailman3/bin/master -C /etc/mailman3/mailman.cfg
> 
> The web part takes 76MB RSS RAM.
> www-data  5082  0.0  0.4 506556 76776 ?        Sl   juin02   0:01 /usr/bin/uwsgi --ini /etc/mailman3/uwsgi.ini
> 
> I have no clue of what could explain such a consumption in your case.
> 
> I'm really open to find solutions as soon as we identify the issue.

Ah, sorry, I misunderstood this time.

Indeed, it takes 50 MB per process, instead of 18 MB per process for
mailman2 (in my case), and since the number of runners is quite higher, this
leads to a quite bigger footprint. I guess a part of this can be explained
by the bigger framework that is loaded by python (sqlalchemy, ...).

The thing on idle memory seems quite irrelevant to me, but I'm no expert on
this part.

I'll try to follow the discussion.

-- 
Pierre-Elliott Bécue
GPG: 9AE0 4D98 6400 E3B6 7528  F493 0D44 2664 1949 74E2
It's far easier to fight for one's principles than to live up to them.