* [dpdk-dev] Memory footprint of a PMD
[not found] <899934402.3791304.1556876242992.ref@mail.yahoo.com>
@ 2019-05-03 9:37 ` P Smith
2019-05-03 9:37 ` P Smith
2019-05-03 10:02 ` Burakov, Anatoly
0 siblings, 2 replies; 6+ messages in thread
From: P Smith @ 2019-05-03 9:37 UTC (permalink / raw)
To: dev
Hi, Given that a dpdk driver uses rte_malloc_xx() and friends to allocate/free its memory what is the best way to find out the runtime memory footprint of a PMD ? One can use 'malloc_info' to dump the malloc output in case of general 'malloc' ...but what is the way here since it's all hugepages ? How to know the memory /footprint of my testpmd /application at different points during run-time?Is there a tool or some API i can invoke to find out the same?
Thanks P
^ permalink raw reply [flat|nested] 6+ messages in thread
* [dpdk-dev] Memory footprint of a PMD
2019-05-03 9:37 ` [dpdk-dev] Memory footprint of a PMD P Smith
@ 2019-05-03 9:37 ` P Smith
2019-05-03 10:02 ` Burakov, Anatoly
1 sibling, 0 replies; 6+ messages in thread
From: P Smith @ 2019-05-03 9:37 UTC (permalink / raw)
To: dev
Hi, Given that a dpdk driver uses rte_malloc_xx() and friends to allocate/free its memory what is the best way to find out the runtime memory footprint of a PMD ? One can use 'malloc_info' to dump the malloc output in case of general 'malloc' ...but what is the way here since it's all hugepages ? How to know the memory /footprint of my testpmd /application at different points during run-time?Is there a tool or some API i can invoke to find out the same?
Thanks P
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [dpdk-dev] Memory footprint of a PMD
2019-05-03 9:37 ` [dpdk-dev] Memory footprint of a PMD P Smith
2019-05-03 9:37 ` P Smith
@ 2019-05-03 10:02 ` Burakov, Anatoly
2019-05-03 10:02 ` Burakov, Anatoly
2019-05-03 19:03 ` Stephen Hemminger
1 sibling, 2 replies; 6+ messages in thread
From: Burakov, Anatoly @ 2019-05-03 10:02 UTC (permalink / raw)
To: P Smith, dev
On 03-May-19 10:37 AM, P Smith wrote:
> Hi, Given that a dpdk driver uses rte_malloc_xx() and friends to allocate/free its memory what is the best way to find out the runtime memory footprint of a PMD ? One can use 'malloc_info' to dump the malloc output in case of general 'malloc' ...but what is the way here since it's all hugepages ? How to know the memory /footprint of my testpmd /application at different points during run-time?Is there a tool or some API i can invoke to find out the same?
> Thanks P
>
I don't think there is a way to do this currently, other than tracing
all PMD's allocations.
That said, there is an API to find total usage of DPDK memory - look int
rte_malloc_heap_stats related API's.
--
Thanks,
Anatoly
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [dpdk-dev] Memory footprint of a PMD
2019-05-03 10:02 ` Burakov, Anatoly
@ 2019-05-03 10:02 ` Burakov, Anatoly
2019-05-03 19:03 ` Stephen Hemminger
1 sibling, 0 replies; 6+ messages in thread
From: Burakov, Anatoly @ 2019-05-03 10:02 UTC (permalink / raw)
To: P Smith, dev
On 03-May-19 10:37 AM, P Smith wrote:
> Hi, Given that a dpdk driver uses rte_malloc_xx() and friends to allocate/free its memory what is the best way to find out the runtime memory footprint of a PMD ? One can use 'malloc_info' to dump the malloc output in case of general 'malloc' ...but what is the way here since it's all hugepages ? How to know the memory /footprint of my testpmd /application at different points during run-time?Is there a tool or some API i can invoke to find out the same?
> Thanks P
>
I don't think there is a way to do this currently, other than tracing
all PMD's allocations.
That said, there is an API to find total usage of DPDK memory - look int
rte_malloc_heap_stats related API's.
--
Thanks,
Anatoly
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [dpdk-dev] Memory footprint of a PMD
2019-05-03 10:02 ` Burakov, Anatoly
2019-05-03 10:02 ` Burakov, Anatoly
@ 2019-05-03 19:03 ` Stephen Hemminger
2019-05-03 19:03 ` Stephen Hemminger
1 sibling, 1 reply; 6+ messages in thread
From: Stephen Hemminger @ 2019-05-03 19:03 UTC (permalink / raw)
To: Burakov, Anatoly; +Cc: P Smith, dev
On Fri, 3 May 2019 11:02:15 +0100
"Burakov, Anatoly" <anatoly.burakov@intel.com> wrote:
> On 03-May-19 10:37 AM, P Smith wrote:
> > Hi, Given that a dpdk driver uses rte_malloc_xx() and friends to allocate/free its memory what is the best way to find out the runtime memory footprint of a PMD ? One can use 'malloc_info' to dump the malloc output in case of general 'malloc' ...but what is the way here since it's all hugepages ? How to know the memory /footprint of my testpmd /application at different points during run-time?Is there a tool or some API i can invoke to find out the same?
> > Thanks P
> >
>
> I don't think there is a way to do this currently, other than tracing
> all PMD's allocations.
>
> That said, there is an API to find total usage of DPDK memory - look int
> rte_malloc_heap_stats related API's.
>
rte_malloc and friends allocate from memory pool in huge pages, not the normal
malloc heap. The mempool does have compile option for debug which does keep statistics.
Then rte_mempool_dump (or rte_mempool_walk and rte_mempool_dump) can be used to show info.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [dpdk-dev] Memory footprint of a PMD
2019-05-03 19:03 ` Stephen Hemminger
@ 2019-05-03 19:03 ` Stephen Hemminger
0 siblings, 0 replies; 6+ messages in thread
From: Stephen Hemminger @ 2019-05-03 19:03 UTC (permalink / raw)
To: Burakov, Anatoly; +Cc: P Smith, dev
On Fri, 3 May 2019 11:02:15 +0100
"Burakov, Anatoly" <anatoly.burakov@intel.com> wrote:
> On 03-May-19 10:37 AM, P Smith wrote:
> > Hi, Given that a dpdk driver uses rte_malloc_xx() and friends to allocate/free its memory what is the best way to find out the runtime memory footprint of a PMD ? One can use 'malloc_info' to dump the malloc output in case of general 'malloc' ...but what is the way here since it's all hugepages ? How to know the memory /footprint of my testpmd /application at different points during run-time?Is there a tool or some API i can invoke to find out the same?
> > Thanks P
> >
>
> I don't think there is a way to do this currently, other than tracing
> all PMD's allocations.
>
> That said, there is an API to find total usage of DPDK memory - look int
> rte_malloc_heap_stats related API's.
>
rte_malloc and friends allocate from memory pool in huge pages, not the normal
malloc heap. The mempool does have compile option for debug which does keep statistics.
Then rte_mempool_dump (or rte_mempool_walk and rte_mempool_dump) can be used to show info.
^ permalink raw reply [flat|nested] 6+ messages in thread
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2019-05-03 9:37 ` [dpdk-dev] Memory footprint of a PMD P Smith
2019-05-03 9:37 ` P Smith
2019-05-03 10:02 ` Burakov, Anatoly
2019-05-03 10:02 ` Burakov, Anatoly
2019-05-03 19:03 ` Stephen Hemminger
2019-05-03 19:03 ` Stephen Hemminger
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