From: Vladimir Medvedkin <medvedkinv@gmail.com>
To: Bruce Richardson <bruce.richardson@intel.com>
Cc: cs5120282@cse.iitd.ac.in, "dev@dpdk.org" <dev@dpdk.org>,
cristian.dumitrescu@intel.com
Subject: Re: [dpdk-dev] Why DPDK is not using compressed TRIE for LPM6?
Date: Mon, 29 May 2017 14:54:16 +0300 [thread overview]
Message-ID: <CANDrEHk5ELmzOsF9errmRwyEA9oGOX5YoMSWSv314yyzPF4Thg@mail.gmail.com> (raw)
In-Reply-To: <20170529093008.GB32120@bricha3-MOBL3.ger.corp.intel.com>
Hi all,
Currently I'm working on compressed trie implementation for LPM4 lib. I
think it could be adapted for LPM6.
2017-05-29 12:30 GMT+03:00 Bruce Richardson <bruce.richardson@intel.com>:
> On Sat, May 27, 2017 at 12:34:57AM +0530, Atul Shree wrote:
> > Hello All,
> >
> > I was doing some experiments related to LPM6 look up and I have added 20K
> > entries in the table. By looking at the rte_lpm6_lookup() code I found an
> > opportunity to compress the TRIE and there is a significant improvement
> > after compression.
> >
>
> Although I'm maintainer for LPM library, I'm not the original author of
> the LPM6 code. However, I'll give my thoughts here. Adding Cristian D. on
> CC as he was involved in the original implementation, IIRC.
>
> > Here are my questions:
> > Q1: Why DPDK is not doing the compression?
>
> It's probably not a deliberate omission, more likely that nobody has
> done it.
>
> > Q2. In the worst case the table will behave like an uncompressed TRIE and
> > in other cases, there is a scope of improvement. Is it worth doing?
> >
>
> If there is improvement in the normal case, with the worst-case perf
> being no worse, it sounds like it may be worth doing. Feel free to
> submit patches for evaluation on the list.
>
> Regards,
> /Bruce
>
>
--
Regards,
Vladimir
next prev parent reply other threads:[~2017-05-29 11:54 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-26 19:04 Atul Shree
2017-05-29 9:30 ` Bruce Richardson
2017-05-29 11:54 ` Vladimir Medvedkin [this message]
2017-05-29 12:42 ` Dumitrescu, Cristian
2017-05-31 6:10 ` Atul Shree
-- strict thread matches above, loose matches on Subject: below --
2017-05-25 6:32 [dpdk-dev] Why DPDK is not using compressed TRIE for LPM6 ? ankit bhardwaj
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