From: Bruce Richardson <bruce.richardson@intel.com>
To: Olivier Matz <olivier.matz@6wind.com>
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH] test/mempool: decrease size of requested mempool
Date: Thu, 9 Jul 2015 12:18:31 +0100 [thread overview]
Message-ID: <20150709111831.GE8408@bricha3-MOBL3> (raw)
In-Reply-To: <1436432489-31161-1-git-send-email-olivier.matz@6wind.com>
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>
next prev parent reply other threads:[~2015-07-09 11:18 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-09 9:01 Olivier Matz
2015-07-09 11:18 ` Bruce Richardson [this message]
2015-07-09 15:35 ` Thomas Monjalon
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