From: Thomas Monjalon <thomas.monjalon@6wind.com>
To: "Van Haaren, Harry" <harry.van.haaren@intel.com>
Cc: "'David Harton (dharton)'" <dharton@cisco.com>,
dev@dpdk.org, "Tahhan, Maryam" <maryam.tahhan@intel.com>,
olivier.matz@6wind.com
Subject: Re: [dpdk-dev] [PATCH] doc: announce xstats api change for 16.07
Date: Wed, 06 Apr 2016 11:22:10 +0200 [thread overview]
Message-ID: <27546869.TpcjJvEkXE@xps13> (raw)
In-Reply-To: <E923DB57A917B54B9182A2E928D00FA6128A41B7@IRSMSX102.ger.corp.intel.com>
2016-04-06 09:02, Van Haaren, Harry:
> + David Harton,
>
> > From: Thomas Monjalon [mailto:thomas.monjalon@6wind.com]
> > Subject: Re: [dpdk-dev] [PATCH] doc: announce xstats api change for 16.07
> > 2016-04-05 18:58, Harry van Haaren:
> > > +* ABI change is planned for the xstats API
>
> > Have you already submitted a RFC patch to let us have an opinion on the change?
> > We need, at least, to see the structure changes.
>
> This API break is to allow changing the API of xstats given the conversation that was on-list, as discussed in this thread:
>
> http://thread.gmane.org/gmane.comp.networking.dpdk.devel/31728/focus=31903
>
> The issue we are going to fix is that currently PMDs copy strings when retrieving statistics, which causes unnecessary overhead. The implementation is not decided yet, but using an int->value mapping seems logical.
I am not sure performance is so much critical when retrieving statistics.
The extended stats can be infinitely extended. So a string identifier seems
a lot more natural.
I do not agree to add a new numeric identifier in the API each time a driver
wants to report a specific statistic for debugging purpose.
> The rte_eth_xstats struct size may be modified, and the API to retrieve statistics will be modified.
next prev parent reply other threads:[~2016-04-06 9:23 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-05 17:58 Harry van Haaren
2016-04-05 18:45 ` Thomas Monjalon
2016-04-06 9:02 ` Van Haaren, Harry
2016-04-06 9:22 ` Thomas Monjalon [this message]
2016-04-06 11:16 ` Van Haaren, Harry
2016-04-06 12:14 ` Thomas Monjalon
2016-04-06 13:49 ` David Harton (dharton)
2016-04-06 13:53 ` Van Haaren, Harry
2016-04-06 13:46 ` Remy Horton
2016-04-06 14:00 ` David Harton (dharton)
2016-04-06 14:25 ` Tahhan, Maryam
2016-04-07 21:36 ` Thomas Monjalon
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