[dpdk-dev] [PATCH] app test: fix mempool cache_size not match limited cache_size
Liu, Yong
yong.liu at intel.com
Mon Aug 3 02:51:40 CEST 2015
Thanks Thomas.
> -----Original Message-----
> From: Thomas Monjalon [mailto:thomas.monjalon at 6wind.com]
> Sent: Monday, August 03, 2015 5:27 AM
> To: Liu, Yong
> Cc: dev at dpdk.org; olivier.matz at 6wind.com; Wu, Jingjing
> Subject: Re: [dpdk-dev] [PATCH] app test: fix mempool cache_size not match
> limited cache_size
>
> 2015-07-29 11:22, Yong Liu:
> > In previous setting, mempool size and cache_size are both 32.
> > This is not satisfied with cache_size checking rule by now.
> > Cache size should less than CONFIG_RTE_MEMPOOL_CACHE_MAX_SIZE and
> mempool size / 1.5.
>
> Sorry I don't really understand this explanation.
>
This information is stripped from the description for parameter cache_size of function rte_mempool_create.
Now rte_mempool_create function will check cache_size value less than mempool size /1.5.
In test_sched.c, mempool size and cache size are all 32 and not match mempool cache size checking rule.
This will cause sched_autotest not work.
> > #define NB_MBUF 32
> > #define MBUF_DATA_SZ (2048 + RTE_PKTMBUF_HEADROOM)
> > -#define PKT_BURST_SZ 32
> > +#define PKT_BURST_SZ 0
> > #define MEMPOOL_CACHE_SZ PKT_BURST_SZ
>
> Shouldn't be MEMPOOL_CACHE_SZ to set to 0?
Macro PKT_BURST_SZ not used in this file, MEMPOOL_CACHE_SZ should be set to 0.
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