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From: "Kinsella, Ray" <ray.kinsella@intel.com>
To: Thomas Monjalon <thomas@monjalon.net>,
	Syam Prasad N Pearson <syam.pearson@gadgeon.com>
Cc: "users@dpdk.org" <users@dpdk.org>, "dev@dpdk.org" <dev@dpdk.org>,
	"Wang, Yipeng1" <yipeng1.wang@intel.com>,
	"Gobriel, Sameh" <sameh.gobriel@intel.com>,
	"Richardson, Bruce" <bruce.richardson@intel.com>,
	"Medvedkin, Vladimir" <vladimir.medvedkin@intel.com>
Subject: RE: [dpdk-dev] Doubt regarding DPDK hash Library implementation
Date: Thu, 4 Nov 2021 14:46:53 +0000
Message-ID: <PH0PR11MB47769F949D7FD3273A0ABB48908D9@PH0PR11MB4776.namprd11.prod.outlook.com> (raw)
In-Reply-To: <35568061.LRaTyjEjOM@thomas>

I would guess it - I would say it is related to cache alignment.
Assuming each entry is 8 bytes 😊

Ray K

> -----Original Message-----
> From: Thomas Monjalon <thomas@monjalon.net>
> Sent: Thursday 4 November 2021 14:12
> To: Syam Prasad N Pearson <syam.pearson@gadgeon.com>
> Cc: users@dpdk.org; dev@dpdk.org; Wang, Yipeng1
> <yipeng1.wang@intel.com>; Gobriel, Sameh <sameh.gobriel@intel.com>;
> Richardson, Bruce <bruce.richardson@intel.com>; Medvedkin, Vladimir
> <vladimir.medvedkin@intel.com>
> Subject: Re: [dpdk-dev] Doubt regarding DPDK hash Library
> implementation
> 
> +Cc hash lib maintainers
> 
> 01/11/2021 11:55, Syam Prasad N Pearson:
> > Dear Sir/Madam,
> > I am a developer trying to get familiar with the DPDK hash library.
> I
> > tried to make and use a hash table successfully.
> > During the development I came across a variable
> >
> > /** Number of items per bucket. */
> > *#define RTE_HASH_BUCKET_ENTRIES 8*
> >
> > defined inside:
> > dpdk-20.11.3/dpdk-stable-20.11.3/lib/librte_hash /rte_cuckoo_hash.h
> >
> > Why does the library take this value as *8*, is there any particular
> > reason for this? what if it is 16,32... etc.
> >
> > I am using DPDK 20.11.3 LTS.
> >
> > Please help.
> 
> 


  reply	other threads:[~2021-11-04 14:47 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-01 10:55 Syam Prasad N Pearson
2021-11-04 14:11 ` [dpdk-dev] " Thomas Monjalon
2021-11-04 14:46   ` Kinsella, Ray [this message]
2021-11-04 16:39     ` Medvedkin, Vladimir
2021-11-04 16:49       ` Thomas Monjalon
2021-11-06 23:23         ` Syam Prasad N Pearson

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