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References: <20180720092516.GA23759@dcvr> <20180720093416.GA27657@dcvr>
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From: Sam Saffron <sam.saffron@gmail.com>
Date: Thu, 26 Jul 2018 15:02:59 +1000
Message-ID: <CAAtdryNv726Aq=Dy7re8PZjQj080ceG22UWe0LXDohRF0Woe2Q@mail.gmail.com>
Subject: Re: [ANN] mwrap 2.0.0 mwrap - LD_PRELOAD malloc wrapper for Ruby
To: Eric Wong <e@80x24.org>
Cc: Ruby users <ruby-talk@ruby-lang.org>, mwrap-public@80x24.org
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List-Id: <mwrap-public.80x24.org>

Yes, this patch looks right to me.

Even if we don't have perfect fidelity here it will give absolute
clarity on "leak" vs "fragmentation related bloat". Even though
jemalloc tries hard to compensate for fragmentation bloat is still
possible.

For full context here is a dump when I started the process (it was 500meg rss)

https://transfer.sh/Q9zQS/start.txt

Here is how it looks now (1.2G rss):

https://transfer.sh/14fokY/now.txt


The script I use to generate this stuff is:

https://github.com/discourse/discourse/blob/master/script/mwrap_sidekiq