[dpdk-dev] [PATCH] eal: add telemetry callbacks for memory info

[Bruce Richardson]

On Wed, Sep 15, 2021 at 03:23:36PM +0530, Harman Kalra wrote:
> Registering new telemetry callbacks to dump named (memzones)
> and unnamed (malloc) memory information to a file provided as
> an argument.
> 
> Example:
> Connecting to /var/run/dpdk/rte/dpdk_telemetry.v2
> {"version": "DPDK 21.08.0", "pid": 34075, "max_output_len": 16384}
> Connected to application: "dpdk-testpmd"
> --> /eal/malloc_dump,/tmp/malloc_dump
> {"/eal/malloc_dump": {"Malloc elements file: ": "/tmp/malloc_dump"}}
> -->
> --> /eal/malloc_info,/tmp/info
> {"/eal/malloc_info": {"Malloc stats file: ": "/tmp/info"}}
> -->
> -->
> --> /eal/memzone_dump,/tmp/memzone_info
> {"/eal/memzone_dump": {"Memzones count: ": 11, \
> "Memzones info file: ": "/tmp/memzone_info"}}
> 
> Signed-off-by: Harman Kalra <hkalra at marvell.com>
> ---

For this info, why not just send the data out as telemetry data rather than
writing files on the filesystem containing it? If the info is too large to
dump it all in a single go, a shortened form could be sent via some form of
list call, and additional calls could be used to provide more detail on
specific items in the list.

 Also, this seems more a debugging operation than a telemetry one, though I
don't have a strong objection to the info being exported as telemetry
directly (just not via filesystem).

Regards,
/Bruce