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From: Stephen Hemminger <stephen@networkplumber.org>
To: Ferruh Yigit <ferruh.yigit@intel.com>
Cc: "Min Hu (Connor)" <humin29@huawei.com>,
	dev@dpdk.org, bruce.richardson@intel.com,
	thomas.monjalon@6wind.com, lihuisong@huawei.com
Subject: Re: [dpdk-dev] [RFC V4] app/testpmd: fix queue stats mapping configuration
Date: Fri, 20 Nov 2020 15:21:37 -0800
Message-ID: <20201120152137.37d11e99@hermes.local> (raw)
In-Reply-To: <94a17751-c71a-a1c0-7cfd-d7990ff265e5@intel.com>

On Fri, 20 Nov 2020 17:26:55 +0000
Ferruh Yigit <ferruh.yigit@intel.com> wrote:

> On 11/20/2020 11:50 AM, Min Hu (Connor) wrote:
> > From: Huisong Li <lihuisong@huawei.com>
> > 
> > Currently, the queue stats mapping has the following problems:
> > 1) Many PMD drivers don't support queue stats mapping. But there is no
> >   failure message after executing the command "set stat_qmap rx 0 2 2".
> > 2) Once queue mapping is set, unrelated and unmapped queues are also
> > displayed.
> > 3) The configuration result does not take effect or can not be queried
> > in real time.
> > 4) The mapping arrays, "tx_queue_stats_mappings_array" &
> > "rx_queue_stats_mappings_array" are global and their sizes are based on
> > fixed max port and queue size assumptions.
> > 5) These record structures, 'map_port_queue_stats_mapping_registers()'
> >   and its sub functions are redundant for majority of drivers.
> > 6) The display of the queue stats and queue stats mapping is mixed
> >   together.
> > 
> > Since xstats is used to obtain queue statistics, we have made the following
> >   simplifications and adjustments:
> > 1) If PMD requires and supports queue stats mapping, configure to driver in
> >   real time by calling ethdev API after executing the command
> >   "set stat_qmap rx/tx ...". If not, the command can not be accepted.
> > 2) Based on the above adjustments, these record structures,
> > 'map_port_queue_stats_mapping_registers()' and its sub functions can be
> >   removed. "tx-queue-stats-mapping" & "rx-queue-stats-mapping" parameters,
> >   and 'parse_queue_stats_mapping_config()' can be removed too.
> > 3) remove display of queue stats mapping in 'fwd_stats_display()' &
> >   'nic_stats_display()', and obtain queue stats by xstats.
> >   Since the record structures are removed, 'nic_stats_mapping_display()'
> >   can be deleted.
> > 
> > Fixes: 4dccdc789bf4b ("app/testpmd: simplify handling of stats mappings error")
> > Fixes: 013af9b6b64f6 ("app/testpmd: various updates")
> > Fixes: ed30d9b691b21 ("app/testpmd: add stats per queue")
> > 
> > Signed-off-by: Huisong Li <lihuisong@huawei.com>  
> 
> Overall	looks good to me.
> I did a quick test didn't see anything unexpected. 'xstats' or 'dpdk-proc-info' 
> app still can be used to get queue stats and "set stat_qmap ..." is working as 
> expected.
> 
> But it is a little late for this release cycle, would you be OK to get this at 
> the beginning of next release?

Could we plan to deprecate queue stats mapping in future when xstats work is done?

  reply	other threads:[~2020-11-20 23:21 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-20  8:26 [dpdk-dev] [RFC V2 0/2] fix queue stats mapping Min Hu (Connor)
2020-10-20  8:26 ` [dpdk-dev] [RFC V2 1/2] app/testpmd: fix queue stats mapping configuration Min Hu (Connor)
2020-10-30 20:54   ` Ferruh Yigit
2020-11-03  6:30     ` Min Hu (Connor)
2020-11-12  2:28       ` Min Hu (Connor)
2020-11-12  9:52         ` Ferruh Yigit
2020-11-18  3:39           ` Min Hu (Connor)
2020-11-20 11:50           ` [dpdk-dev] [RFC V4] " Min Hu (Connor)
2020-11-20 17:26             ` Ferruh Yigit
2020-11-20 23:21               ` Stephen Hemminger [this message]
2020-11-20 23:33                 ` Ferruh Yigit
2020-11-21  4:29                   ` Stephen Hemminger
2020-11-23  7:22                     ` Min Hu (Connor)
2020-11-23  9:51                     ` Ferruh Yigit
2020-11-30  8:29                       ` Min Hu (Connor)
2020-12-02 10:44                         ` Ferruh Yigit
2020-12-02 12:48                           ` [dpdk-dev] [PATCH V1] " Min Hu (Connor)
2020-12-08 15:48                             ` Ferruh Yigit
2020-12-07  1:28                           ` [dpdk-dev] [RFC V4] " Min Hu (Connor)
2020-10-20  8:26 ` [dpdk-dev] [RFC V2 2/2] app/testpmd: fix starting failed with queue-stats-mapping Min Hu (Connor)

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