[dpdk-dev] Using valgrind with DPDK app

[dpdk-dev] Using valgrind with DPDK app

[Montorsi, Francesco]

Hi all,
I would like to know if it's possible to run my DPDK application (I'm using DPDK 19.11) under Valgrind.
I tried but it gets stuck apparently while accessing hugepages:

----
AL: Detected memory type: socket_id:0 hugepage_sz:1073741824
EAL: Detected memory type: socket_id:1 hugepage_sz:1073741824
EAL: Creating 4 segment lists: n_segs:32 socket_id:0 hugepage_sz:1073741824
EAL: Ask a virtual area of 0x1000 bytes
EAL: Virtual area found at 0x100033000 (size = 0x1000)
EAL: Memseg list allocated: 0x100000kB at socket 0
EAL: Ask a virtual area of 0x800000000 bytes
EAL: Virtual area found at 0x140000000 (size = 0x800000000)
EAL: Ask a virtual area of 0x1000 bytes
EAL: Virtual area found at 0x940000000 (size = 0x1000)
EAL: Memseg list allocated: 0x100000kB at socket 0
EAL: Ask a virtual area of 0x800000000 bytes
EAL: WARNING! Base virtual address hint (0xa80001000 != 0x1040000000) not respected!
EAL:    This may cause issues with mapping memory into secondary processes
EAL: Virtual area found at 0x1040000000 (size = 0x800000000)
EAL: Ask a virtual area of 0x1000 bytes
EAL: Virtual area found at 0xac0001000 (size = 0x1000)
EAL: Memseg list allocated: 0x100000kB at socket 0
EAL: Ask a virtual area of 0x800000000 bytes
----

I've seen there was some attempt a few years ago:
    http://mails.dpdk.org/archives/dev/2016-February/033108.html
has anything changed since that?

Also I see that Luca has created a project here
  https://github.com/bluca/valgrind-dpdk
but seems like there were no changes since 3 years... I wonder if that works or not with recent DPDK versions...

Thanks for any hint,

Francesco Montorsi

Re: [dpdk-dev] Using valgrind with DPDK app

[Victor Huertas]

Hello,

I have exactly the same problem as you. I have also downloaded, compiled
and installed the very last version of valgrind (v3.17).
As soon as the mempool is created, the program gets stuck.

If valgrind cannot be used with DPDK (I am using v18.11.5) as memory leak
debugger, there must be other tool to do it. Which one?

Thanks for your attention

El vie., 10 jul. 2020 a las 16:59, Montorsi, Francesco (<
fmontorsi@empirix.com>) escribió:

> Hi all,
> I would like to know if it's possible to run my DPDK application (I'm
> using DPDK 19.11) under Valgrind.
> I tried but it gets stuck apparently while accessing hugepages:
>
> ----
> AL: Detected memory type: socket_id:0 hugepage_sz:1073741824
> EAL: Detected memory type: socket_id:1 hugepage_sz:1073741824
> EAL: Creating 4 segment lists: n_segs:32 socket_id:0 hugepage_sz:1073741824
> EAL: Ask a virtual area of 0x1000 bytes
> EAL: Virtual area found at 0x100033000 (size = 0x1000)
> EAL: Memseg list allocated: 0x100000kB at socket 0
> EAL: Ask a virtual area of 0x800000000 bytes
> EAL: Virtual area found at 0x140000000 (size = 0x800000000)
> EAL: Ask a virtual area of 0x1000 bytes
> EAL: Virtual area found at 0x940000000 (size = 0x1000)
> EAL: Memseg list allocated: 0x100000kB at socket 0
> EAL: Ask a virtual area of 0x800000000 bytes
> EAL: WARNING! Base virtual address hint (0xa80001000 != 0x1040000000) not
> respected!
> EAL:    This may cause issues with mapping memory into secondary processes
> EAL: Virtual area found at 0x1040000000 (size = 0x800000000)
> EAL: Ask a virtual area of 0x1000 bytes
> EAL: Virtual area found at 0xac0001000 (size = 0x1000)
> EAL: Memseg list allocated: 0x100000kB at socket 0
> EAL: Ask a virtual area of 0x800000000 bytes
> ----
>
> I've seen there was some attempt a few years ago:
>     http://mails.dpdk.org/archives/dev/2016-February/033108.html
> has anything changed since that?
>
> Also I see that Luca has created a project here
>   https://github.com/bluca/valgrind-dpdk
> but seems like there were no changes since 3 years... I wonder if that
> works or not with recent DPDK versions...
>
> Thanks for any hint,
>
> Francesco Montorsi
>
>
>
>

-- 
Victor

Re: [dpdk-dev] Using valgrind with DPDK app

[Stephen Hemminger]

On Sat, 29 Aug 2020 19:54:08 +0200
Victor Huertas <vhuertas@gmail.com> wrote:

> Hello,
> 
> I have exactly the same problem as you. I have also downloaded, compiled
> and installed the very last version of valgrind (v3.17).
> As soon as the mempool is created, the program gets stuck.
> 
> If valgrind cannot be used with DPDK (I am using v18.11.5) as memory leak
> debugger, there must be other tool to do it. Which one?
> 
> Thanks for your attention
> 
> El vie., 10 jul. 2020 a las 16:59, Montorsi, Francesco (<
> fmontorsi@empirix.com>) escribió:  
> 
> > Hi all,
> > I would like to know if it's possible to run my DPDK application (I'm
> > using DPDK 19.11) under Valgrind.
> > I tried but it gets stuck apparently while accessing hugepages:
> >
> > ----
> > AL: Detected memory type: socket_id:0 hugepage_sz:1073741824
> > EAL: Detected memory type: socket_id:1 hugepage_sz:1073741824
> > EAL: Creating 4 segment lists: n_segs:32 socket_id:0 hugepage_sz:1073741824
> > EAL: Ask a virtual area of 0x1000 bytes
> > EAL: Virtual area found at 0x100033000 (size = 0x1000)
> > EAL: Memseg list allocated: 0x100000kB at socket 0
> > EAL: Ask a virtual area of 0x800000000 bytes
> > EAL: Virtual area found at 0x140000000 (size = 0x800000000)
> > EAL: Ask a virtual area of 0x1000 bytes
> > EAL: Virtual area found at 0x940000000 (size = 0x1000)
> > EAL: Memseg list allocated: 0x100000kB at socket 0
> > EAL: Ask a virtual area of 0x800000000 bytes
> > EAL: WARNING! Base virtual address hint (0xa80001000 != 0x1040000000) not
> > respected!
> > EAL:    This may cause issues with mapping memory into secondary processes
> > EAL: Virtual area found at 0x1040000000 (size = 0x800000000)
> > EAL: Ask a virtual area of 0x1000 bytes
> > EAL: Virtual area found at 0xac0001000 (size = 0x1000)
> > EAL: Memseg list allocated: 0x100000kB at socket 0
> > EAL: Ask a virtual area of 0x800000000 bytes
> > ----
> >
> > I've seen there was some attempt a few years ago:
> >     http://mails.dpdk.org/archives/dev/2016-February/033108.html
> > has anything changed since that?
> >
> > Also I see that Luca has created a project here
> >   https://github.com/bluca/valgrind-dpdk
> > but seems like there were no changes since 3 years... I wonder if that
> > works or not with recent DPDK versions...
> >
> > Thanks for any hint,
> >
> > Francesco Montorsi

Try the address-sanitizer option of Gcc or Clang. It works for applications.
I had issues with running on EAL startup.