From: Olivier MATZ <olivier.matz@6wind.com>
To: Ferruh Yigit <ferruh.yigit@intel.com>,
Stephen Hemminger <stephen@networkplumber.org>,
dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH, v2] mempool: avoid memory waste with large pagesize
Date: Thu, 10 Mar 2016 12:12:12 +0100 [thread overview]
Message-ID: <56E1568C.5020805@6wind.com> (raw)
In-Reply-To: <56E150FD.2090403@intel.com>
>> It still does not work. When CONFIG_RTE_LIBRTE_MEMPOOL_DEBUG=y:
>>
>> mp = rte_mempool_create("test", 128,
>> 64, 0, 0, NULL, NULL, NULL, NULL, SOCKET_ID_ANY, 0);
>> rte_mempool_dump(stdout, mp);
>>
>> populated_size=128
>> header_size=64
>> elt_size=64
>> trailer_size=64
>> total_obj_size=192
>>
> With --no-huge (since patch updates that part), it gives:
> header_size=64
> elt_size=64
> trailer_size=0
> total_obj_size=128
> private_data_size=3904
>
> 1- private_data still rounds to page size, not sure if this is a problem.
> 2- with MEMPOOL_DEBUG=y, trailer_size is 0, comment in code says it
> should keep cookie, not sure if this is a problem.
Yes the trailer should at least be 8 bytes to store the cookie.
next prev parent reply other threads:[~2016-03-10 11:12 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-09 21:12 Stephen Hemminger
2016-03-10 8:37 ` Olivier MATZ
2016-03-10 10:48 ` Ferruh Yigit
2016-03-10 11:12 ` Olivier MATZ [this message]
2016-03-11 4:09 ` Stephen Hemminger
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