From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <vdavydov.dev@gmail.com>
Date: Mon, 20 May 2019 13:03:53 +0300
From: Vladimir Davydov <vdavydov.dev@gmail.com>
Subject: Re: [PATCH v5 0/2] Implement support of strip_core functionality
Message-ID: <20190520100353.3knli6qxzq2o4lak@esperanza>
References: <20190516214559.3310-1-gorcunov@gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20190516214559.3310-1-gorcunov@gmail.com>
To: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: tml <tarantool-patches@freelists.org>, Alexander Turenko <alexander.turenko@tarantool.org>
List-ID: <tarantool-patches.dev.tarantool.org>

On Fri, May 17, 2019 at 12:45:57AM +0300, Cyrill Gorcunov wrote:
> Volodya, could you please help with more intensive testing since I'm not sure
> how to fill memtx from console or some script yet.

Just type in the console or a script:

  -- alloc 1 GB for memtx tuple arena
  box.cfg{memtx_memory = 1024 * 1024 * 1024}

  -- create a test space
  s = box.schema.space.create('test')
  s:create_index('primary')

  -- fill it until we run out of memory
  for i = 1, math.huge do s:insert{i, string.rep('x', 100 * 1024)} end

  -- double the size of memtx arena by adding more slabs
  box.cfg{memtx_memory = 2 * 1024 * 1024 * 1024}

  -- fill them up too
  for i = 1, math.huge do s:insert{i, string.rep('x', 100 * 1024)} end

Then kill the tarantool with SIGSEGV to generate a core. The core size
should be considerably less than 2 GB with strip_core enabled.