* [dpdk-users] DPDK Memory in GDB
@ 2017-10-03 9:41 Kumaraparameshwaran Rathnavel
2017-10-03 15:49 ` Stephen Hemminger
0 siblings, 1 reply; 2+ messages in thread
From: Kumaraparameshwaran Rathnavel @ 2017-10-03 9:41 UTC (permalink / raw)
To: users
Hi All,
We have been using the mempool of the DPDK for our application. Whenever there is a core dump and if I try to print the contents of the pointer allocated from rte_malloc gdb is throwing an error saying cannot access the memory at address. During run time this is working fine . This happens only when examining a core. I replaced rte_mallloc with malloc and in this case I am able to print the contents of the pointer. I have built DPDK with -g option. Am I doing anything wrong here?
Thanking You,
Param.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [dpdk-users] DPDK Memory in GDB
2017-10-03 9:41 [dpdk-users] DPDK Memory in GDB Kumaraparameshwaran Rathnavel
@ 2017-10-03 15:49 ` Stephen Hemminger
0 siblings, 0 replies; 2+ messages in thread
From: Stephen Hemminger @ 2017-10-03 15:49 UTC (permalink / raw)
To: Kumaraparameshwaran Rathnavel; +Cc: users
On Tue, 3 Oct 2017 15:11:32 +0530
Kumaraparameshwaran Rathnavel <krath@cloudsimple.com> wrote:
> Hi All,
>
> We have been using the mempool of the DPDK for our application. Whenever there is a core dump and if I try to print the contents of the pointer allocated from rte_malloc gdb is throwing an error saying cannot access the memory at address. During run time this is working fine . This happens only when examining a core. I replaced rte_mallloc with malloc and in this case I am able to print the contents of the pointer. I have built DPDK with -g option. Am I doing anything wrong here?
>
> Thanking You,
> Param.
That is probably intentional. Core dumps don't dump huge page memory (to save space). A 16G core file would not work well.
Also hugepages are shared between multiple processes.
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