From: Slava Ovsiienko <viacheslavo@mellanox.com>
To: Bruce Richardson <bruce.richardson@intel.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>,
"bernard.iremonger@intel.com" <bernard.iremonger@intel.com>,
"ferruh.yigit@intel.com" <ferruh.yigit@intel.com>
Subject: Re: [dpdk-dev] [PATCH] app/testpmd: add profiling for Rx/Tx burst routines
Date: Thu, 27 Jun 2019 04:48:32 +0000 [thread overview]
Message-ID: <AM4PR05MB3265D1F334F4FE9D8646FC57D2FD0@AM4PR05MB3265.eurprd05.prod.outlook.com> (raw)
In-Reply-To: <20190626132124.GD862@bricha3-MOBL.ger.corp.intel.com>
OK, what do you think about this:
#ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
if (record_cycle & RECORD_TX_CORE_CYCLES) {
.. do measurement stuff ..
}
#endif
+ add some new command to config in runtime: "set record_cycle 3"
We keep existing RTE_TEST_PMD_RECORD_CORE_CYCLES, do not introduce
new build-time configs and get some new runtime configuring.
WBR,
Slava
> -----Original Message-----
> From: Bruce Richardson <bruce.richardson@intel.com>
> Sent: Wednesday, June 26, 2019 16:21
> To: Slava Ovsiienko <viacheslavo@mellanox.com>
> Cc: dev@dpdk.org; bernard.iremonger@intel.com; ferruh.yigit@intel.com
> Subject: Re: [dpdk-dev] [PATCH] app/testpmd: add profiling for Rx/Tx burst
> routines
>
> On Wed, Jun 26, 2019 at 01:19:24PM +0000, Slava Ovsiienko wrote:
> > Hi, Bruce
> >
> > Do you mean using "if (core_rx_cycle_enabled) {...}" instead of #ifdef ?
> >
> > No, I did not try runtime control settings.
> > Instead I compared performance with all RECORD_CORE_XX_CYCLES
> options
> > enabled/disabled builds and have seen the ~1-2% performance difference
> on my setups (mainly fwd txonly with retry).
> > So, ticks measuring is not free.
> >
> > With best regards,
> > Slava
> >
> Yes, I realise that measuring ticks is going to have a performance impact.
> However, what I was referring to was exactly the former - using an "if"
> rather than an "ifdef". I would hope with ticks disable using this option shows
> no perf impact, and we can reduce the use of build-time configs.
>
> /Bruce
next prev parent reply other threads:[~2019-06-27 4:48 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-26 12:48 Viacheslav Ovsiienko
2019-06-26 12:57 ` Bruce Richardson
2019-06-26 13:19 ` Slava Ovsiienko
2019-06-26 13:21 ` Bruce Richardson
2019-06-27 4:48 ` Slava Ovsiienko [this message]
2019-06-28 13:45 ` Iremonger, Bernard
2019-06-28 14:20 ` Bruce Richardson
2019-07-01 4:57 ` Slava Ovsiienko
2019-07-01 8:15 ` Bruce Richardson
2019-09-30 12:32 ` Yigit, Ferruh
2020-03-19 13:50 ` [dpdk-dev] [PATCH v2 0/3] app/testpmd: qualify Rx/Tx profiling data on burst size Viacheslav Ovsiienko
2020-03-19 13:50 ` [dpdk-dev] [PATCH v2 1/3] app/testpmd: add profiling flags set command Viacheslav Ovsiienko
2020-04-02 11:15 ` Thomas Monjalon
2020-04-09 11:56 ` Ferruh Yigit
2020-04-13 7:56 ` Slava Ovsiienko
2020-04-13 12:23 ` Thomas Monjalon
2020-04-14 9:07 ` Ferruh Yigit
2020-03-19 13:50 ` [dpdk-dev] [PATCH v2 2/3] app/testpmd: gather Rx and Tx routines profiling Viacheslav Ovsiienko
2020-04-02 11:20 ` Thomas Monjalon
2020-04-02 11:23 ` Slava Ovsiienko
2020-03-19 13:50 ` [dpdk-dev] [PATCH v2 3/3] app/testpmd: qualify profiling statistics on burst size Viacheslav Ovsiienko
2020-03-20 6:13 ` Jerin Jacob
2020-04-09 11:46 ` Ferruh Yigit
2020-04-09 12:49 ` Jerin Jacob
2020-03-20 16:03 ` Andrzej Ostruszka
2020-04-02 11:21 ` Thomas Monjalon
2020-04-09 12:03 ` Ferruh Yigit
2020-04-09 12:09 ` Thomas Monjalon
2020-04-02 11:13 ` [dpdk-dev] [PATCH v2 0/3] app/testpmd: qualify Rx/Tx profiling data " Thomas Monjalon
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