From: Ferruh Yigit <ferruh.yigit@amd.com>
To: Jerin Jacob <jerinjacobk@gmail.com>
Cc: Slava Ovsiienko <viacheslavo@nvidia.com>,
Aman Singh <aman.deep.singh@intel.com>,
Jerin Jacob Kollanukkaran <jerinj@marvell.com>,
"dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [PATCH v2 1/5] app/testpmd: add trace save command
Date: Fri, 23 Jun 2023 13:23:54 +0100 [thread overview]
Message-ID: <28bd9ac6-eb62-b426-61de-17080bedd6ef@amd.com> (raw)
In-Reply-To: <CALBAE1OPv4ZHeAvrN2jrSaYrJf12s0aSAyU=NbtW5HaFbFbqMw@mail.gmail.com>
On 6/23/2023 1:03 PM, Jerin Jacob wrote:
> On Fri, Jun 23, 2023 at 5:23 PM Ferruh Yigit <ferruh.yigit@amd.com> wrote:
>>
>> On 6/23/2023 9:00 AM, Slava Ovsiienko wrote:
>>> Hi, Ferruh
>>>
>>>> -----Original Message-----
>>>> From: Ferruh Yigit <ferruh.yigit@amd.com>
>>>> Sent: Wednesday, June 21, 2023 2:16 PM
>>>> To: Slava Ovsiienko <viacheslavo@nvidia.com>; dev@dpdk.org; Aman Singh
>>>> <aman.deep.singh@intel.com>
>>>> Cc: Jerin Jacob Kollanukkaran <jerinj@marvell.com>
>>>> Subject: Re: [PATCH v2 1/5] app/testpmd: add trace save command
>>>>
>>>> On 6/13/2023 5:58 PM, Viacheslav Ovsiienko wrote:
>>>>> The "save_trace" CLI command is added to trigger saving the trace
>>>>> dumps to the trace directory.
>>>>>
>>>>
>>>> Hi Viacheslav,
>>>>
>>>> Trace is already saved when dpdk application terminated, I guess this is to
>>>> save the trace before exiting the application, what is the use case for this, can
>>>> you please detail in the commit log.
>>>
>>> OK, will update the commit log. The command "save_trace" is useful in some
>>> dynamic debug scenarios to save the trace without restarting the entire application.
>>>
>>>>
>>>> And what happens if this is called multiple times, or what happens on the
>>>> application exit, will it overwrite the file or fail?
>>> It overwrites.
>>>
>>>> Again please explain in the commit log.
>>> Sure, will do.
>>>
>>>>
>>>>> Signed-off-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
>>>>> ---
>>>>> app/test-pmd/cmdline.c | 38 ++++++++++++++++++++++++++++++++++++++
>>>>> 1 file changed, 38 insertions(+)
>>>>>
>>>>
>>>> Can you please update documentation too?
>>>>
>>>>> diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c index
>>>>> a15a442a06..db71ce2028 100644
>>>>> --- a/app/test-pmd/cmdline.c
>>>>> +++ b/app/test-pmd/cmdline.c
>>>>> @@ -39,6 +39,7 @@
>>>>> #include <rte_gro.h>
>>>>> #endif
>>>>> #include <rte_mbuf_dyn.h>
>>>>> +#include <rte_trace.h>
>>>>>
>>>>> #include <cmdline_rdline.h>
>>>>> #include <cmdline_parse.h>
>>>>> @@ -12745,6 +12746,40 @@ static cmdline_parse_inst_t
>>>> cmd_config_tx_affinity_map = {
>>>>> },
>>>>> };
>>>>>
>>>>> +#ifndef RTE_EXEC_ENV_WINDOWS
>>>>> +/* *** SAVE_TRACE *** */
>>>>> +
>>>>> +struct cmd_save_trace_result {
>>>>> + cmdline_fixed_string_t save;
>>>>> +};
>>>>> +
>>>>> +static void cmd_save_trace_parsed(__rte_unused void *parsed_result,
>>>>> + __rte_unused struct cmdline *cl,
>>>>> + __rte_unused void *data)
>>>>> +{
>>>>> + int rc;
>>>>> +
>>>>> + rc = rte_trace_save();
>>>>> + if (rc)
>>>>> + printf("Save trace failed with error: %d\n", rc);
>>>>> + else
>>>>> + printf("Trace saved successfully\n"); }
>>>>> +
>>>>> +static cmdline_parse_token_string_t cmd_save_trace_save =
>>>>> + TOKEN_STRING_INITIALIZER(struct cmd_save_trace_result, save,
>>>>> +"save_trace");
>>>>> +
>>>>
>>>> We have dump_* commands, what do you think to have 'dump_trace'
>>>> command for this?
>>> It was initially (in v1) with "dump_trace" command.
>>> And there is the comment by Jerin:
>>> https://inbox.dpdk.org/dev/CALBAE1Of79a_jHnFT3KX--Enhud-h5RzL02TMQBsmoW721ds7A@mail.gmail.com/#t
>>>
>>> So, I have changed to "save_trace". I have no strong opinion about command name, any allowing trace save is OK for me.
>>>
>>
>> Ah, I missed that.
>>
>>
>> @Jerin,
>> I just saw your comment, agree more exact action can be 'save' but
>> 'dump' also describes enough.
>> Since there are existing 'dump_*' commands, it makes command more
>> intuitive and easy to remember.
>>
>> As an active user of testpmd myself, I am finding it hard to
>> remember/find the command I need as number of commands increased. That
>> is why I am paying extra attention to have more hierarchical, consistent
>> and intuitive commands.
>>
>> For me "dump_trace" works better in that manner, what do you think, do
>> you have strong opinion on 'save_trace'?
>
> dump_* commands dumping on stdout or FILE.
> Trace is mostly saving "current trace buffer" it and internally it
> figure out the FILE.
>
Agree that 'save' can be more accurate, but 'dump_*' is more consistent.
Saving trace buffer to a file, or dumping content of trace buffer to a
file, looks close enough to me.
> But no strong opinion, if testpmd user thinks "dump" is better.
>
OK, lets continue with 'dump_trace'.
next prev parent reply other threads:[~2023-06-23 12:24 UTC|newest]
Thread overview: 76+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-20 10:07 [RFC 0/5] net/mlx5: introduce Tx datapath tracing Viacheslav Ovsiienko
2023-04-20 10:07 ` [RFC 1/5] app/testpmd: add trace dump command Viacheslav Ovsiienko
2023-04-20 10:13 ` Jerin Jacob
2023-04-20 10:08 ` [RFC 2/5] common/mlx5: introduce tracepoints for mlx5 drivers Viacheslav Ovsiienko
2023-04-20 10:11 ` Jerin Jacob
2023-06-13 15:50 ` Slava Ovsiienko
2023-06-13 15:53 ` Jerin Jacob
2023-06-13 15:59 ` Slava Ovsiienko
2023-06-13 16:01 ` Jerin Jacob
2023-06-27 0:39 ` Thomas Monjalon
2023-06-27 6:15 ` Slava Ovsiienko
2023-06-27 7:28 ` Thomas Monjalon
2023-06-27 8:19 ` Slava Ovsiienko
2023-06-27 9:33 ` Thomas Monjalon
2023-06-27 9:43 ` Slava Ovsiienko
2023-06-27 11:36 ` Thomas Monjalon
2023-04-20 10:08 ` [RFC 3/5] net/mlx5: add Tx datapath tracing Viacheslav Ovsiienko
2023-04-20 10:08 ` [RFC 4/5] net/mlx5: add comprehensive send completion trace Viacheslav Ovsiienko
2023-04-20 10:08 ` [RFC 5/5] net/mlx5: add Tx datapath trace analyzing script Viacheslav Ovsiienko
2023-06-09 15:28 ` [PATCH 0/5] net/mlx5: introduce Tx datapath tracing Viacheslav Ovsiienko
2023-06-09 15:28 ` [PATCH 1/5] app/testpmd: add trace dump command Viacheslav Ovsiienko
2023-06-09 15:28 ` [PATCH 2/5] common/mlx5: introduce tracepoints for mlx5 drivers Viacheslav Ovsiienko
2023-06-09 15:28 ` [PATCH 3/5] net/mlx5: add Tx datapath tracing Viacheslav Ovsiienko
2023-06-09 15:28 ` [PATCH 4/5] net/mlx5: add comprehensive send completion trace Viacheslav Ovsiienko
2023-06-09 15:28 ` [PATCH 5/5] net/mlx5: add Tx datapath trace analyzing script Viacheslav Ovsiienko
2023-06-13 16:58 ` [PATCH v2 0/5] net/mlx5: introduce Tx datapath tracing Viacheslav Ovsiienko
2023-06-13 16:58 ` [PATCH v2 1/5] app/testpmd: add trace save command Viacheslav Ovsiienko
2023-06-21 11:15 ` Ferruh Yigit
2023-06-23 8:00 ` Slava Ovsiienko
2023-06-23 11:52 ` Ferruh Yigit
2023-06-23 12:03 ` Jerin Jacob
2023-06-23 12:14 ` Slava Ovsiienko
2023-06-23 12:23 ` Ferruh Yigit [this message]
2023-06-13 16:58 ` [PATCH v2 2/5] common/mlx5: introduce tracepoints for mlx5 drivers Viacheslav Ovsiienko
2023-06-13 16:58 ` [PATCH v2 3/5] net/mlx5: add Tx datapath tracing Viacheslav Ovsiienko
2023-06-13 16:58 ` [PATCH v2 4/5] net/mlx5: add comprehensive send completion trace Viacheslav Ovsiienko
2023-06-13 16:58 ` [PATCH v2 5/5] net/mlx5: add Tx datapath trace analyzing script Viacheslav Ovsiienko
2023-06-20 12:00 ` [PATCH v2 0/5] net/mlx5: introduce Tx datapath tracing Raslan Darawsheh
2023-06-27 0:46 ` Thomas Monjalon
2023-06-27 11:24 ` Slava Ovsiienko
2023-06-27 11:34 ` Thomas Monjalon
2023-06-28 14:18 ` Robin Jarry
2023-06-29 7:16 ` Slava Ovsiienko
2023-06-29 9:08 ` Robin Jarry
2023-06-26 11:06 ` [PATCH] app/testpmd: add trace dump command Viacheslav Ovsiienko
2023-06-26 11:07 ` [PATCH v3] " Viacheslav Ovsiienko
2023-06-26 11:57 ` [PATCH v4] " Viacheslav Ovsiienko
2023-06-27 11:34 ` Ferruh Yigit
2023-06-27 11:39 ` Slava Ovsiienko
2023-06-27 11:58 ` Ferruh Yigit
2023-06-27 14:44 ` [PATCH] app/testpmd: add dump command help message Viacheslav Ovsiienko
2023-06-27 18:03 ` Ferruh Yigit
2023-06-28 9:54 ` [PATCH v2] " Viacheslav Ovsiienko
2023-06-28 13:18 ` Ferruh Yigit
2023-06-27 13:09 ` [PATCH v5] app/testpmd: add trace dump command Viacheslav Ovsiienko
2023-06-27 15:18 ` Ferruh Yigit
2023-06-28 11:09 ` [PATCH v3 0/4] net/mlx5: introduce Tx datapath tracing Viacheslav Ovsiienko
2023-06-28 11:09 ` [PATCH v3 1/4] net/mlx5: introduce tracepoints for mlx5 drivers Viacheslav Ovsiienko
2023-06-28 11:09 ` [PATCH v3 2/4] net/mlx5: add comprehensive send completion trace Viacheslav Ovsiienko
2023-06-28 11:09 ` [PATCH v3 3/4] net/mlx5: add Tx datapath trace analyzing script Viacheslav Ovsiienko
2023-06-28 11:09 ` [PATCH v3 4/4] doc: add mlx5 datapath tracing feature description Viacheslav Ovsiienko
2023-07-05 11:10 ` [PATCH v4 0/4] net/mlx5: introduce Tx datapath tracing Viacheslav Ovsiienko
2023-07-05 11:10 ` [PATCH v4 1/4] net/mlx5: introduce tracepoints for mlx5 drivers Viacheslav Ovsiienko
2023-07-05 11:10 ` [PATCH v4 2/4] net/mlx5: add comprehensive send completion trace Viacheslav Ovsiienko
2023-07-05 11:10 ` [PATCH v4 3/4] net/mlx5: add Tx datapath trace analyzing script Viacheslav Ovsiienko
2023-07-05 11:10 ` [PATCH v4 4/4] doc: add mlx5 datapath tracing feature description Viacheslav Ovsiienko
2023-07-05 15:31 ` [PATCH v5 0/4] net/mlx5: introduce Tx datapath tracing Viacheslav Ovsiienko
2023-07-05 15:31 ` [PATCH v5 1/4] net/mlx5: introduce tracepoints for mlx5 drivers Viacheslav Ovsiienko
2023-07-05 15:31 ` [PATCH v5 2/4] net/mlx5: add comprehensive send completion trace Viacheslav Ovsiienko
2023-07-05 15:31 ` [PATCH v5 3/4] net/mlx5: add Tx datapath trace analyzing script Viacheslav Ovsiienko
2023-07-05 15:31 ` [PATCH v5 4/4] doc: add mlx5 datapath tracing feature description Viacheslav Ovsiienko
2023-07-06 16:27 ` [PATCH v5 0/4] net/mlx5: introduce Tx datapath tracing Raslan Darawsheh
2023-07-11 15:15 ` [PATCH v6 0/2] " Viacheslav Ovsiienko
2023-07-11 15:15 ` [PATCH v6 1/2] net/mlx5: add Tx datapath trace analyzing script Viacheslav Ovsiienko
2023-07-11 15:15 ` [PATCH v6 2/2] doc: add mlx5 datapath tracing feature description Viacheslav Ovsiienko
2023-07-27 10:52 ` [PATCH v6 0/2] net/mlx5: introduce Tx datapath tracing Thomas Monjalon
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