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Date: Thu, 9 Jul 2015 12:18:31 +0100
From: Bruce Richardson <bruce.richardson@intel.com>
To: Olivier Matz <olivier.matz@6wind.com>
Message-ID: <20150709111831.GE8408@bricha3-MOBL3>
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Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH] test/mempool: decrease size of requested
 mempool
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On Thu, Jul 09, 2015 at 11:01:29AM +0200, Olivier Matz wrote:
> In test application, the default size of allocated mempool is calculated
> as following:
> 
>   (RTE_MAX_LCORE * (RTE_MEMPOOL_CACHE_MAX_SIZE + max_kept_objects)) - 1
> 
> The objective is to ensure that all cores can fill their cache and keep
> 'max_kept_objects' at the same time. As RTE_MAX_LCORE is 128 and
> RTE_MEMPOOL_CACHE_MAX_SIZE is 512 in the default configuration, it can
> produce very large mempools (170 MB).
> 
> We can replace the number of core by a dynamic value, which drastically
> reduces the amount of memory needed for this test (5 MB with 4 cores).
> 
> Signed-off-by: Olivier Matz <olivier.matz@6wind.com>

Acked-by: Bruce Richardson <bruce.richardson@intel.com>