diff mbox

[dpdk-dev,v2] doc: add known issue of rte abort on FreeBSD

Message ID 1526897776-23859-1-git-send-email-reshma.pattan@intel.com (mailing list archive)
State Superseded, archived
Delegated to: Thomas Monjalon
Headers

Checks

Context Check Description
ci/checkpatch success coding style OK
ci/Intel-compilation success Compilation OK

Commit Message

Pattan, Reshma May 21, 2018, 10:16 a.m. UTC 
  Added known issue of rte_abort taking a long time
on FreeBSD due to recent memory subsystem rework.

Signed-off-by: Reshma Pattan <reshma.pattan@intel.com>
Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>
---
v2: reworded.
---
 doc/guides/rel_notes/release_18_05.rst | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

Comments

Kovacevic, Marko May 23, 2018, 3:44 p.m. UTC | #1 
> Added known issue of rte_abort taking a long time on FreeBSD due to recent
> memory subsystem rework.
> 
> Signed-off-by: Reshma Pattan <reshma.pattan@intel.com>
> Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>
> ---
> v2: reworded.
> ---
>  doc/guides/rel_notes/release_18_05.rst | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
> 
<...>

Acked-by: Marko Kovacevic <marko.kovacevic@intel.com>
John McNamara May 28, 2018, 3:30 p.m. UTC | #2 
> -----Original Message-----
> From: Pattan, Reshma
> Sent: Monday, May 21, 2018 11:16 AM
> To: dev@dpdk.org
> Cc: Burakov, Anatoly <anatoly.burakov@intel.com>; Mcnamara, John
> <john.mcnamara@intel.com>; Pattan, Reshma <reshma.pattan@intel.com>
> Subject: [PATCH v2] doc: add known issue of rte abort on FreeBSD
> 
> Added known issue of rte_abort taking a long time on FreeBSD due to recent
> memory subsystem rework.
> 
> Signed-off-by: Reshma Pattan <reshma.pattan@intel.com>
> Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>

Could you open an Bugzilla defect for this and add it to the text.

Like this patch: http://dpdk.org/dev/patchwork/patch/40475/

Thanks,

John
diff mbox

Patch

diff --git a/doc/guides/rel_notes/release_18_05.rst b/doc/guides/rel_notes/release_18_05.rst
index 3dcb62538..65014a284 100644
--- a/doc/guides/rel_notes/release_18_05.rst
+++ b/doc/guides/rel_notes/release_18_05.rst
@@ -485,6 +485,21 @@  Known Issues
   dpdk-pdump example and any other applications using librte_pdump, cannot work
   with older version DPDK primary applications.
 
+* **rte_abort takes a long time on FreeBSD.**
+
+  DPDK processes now allocates a large area of virtual memory address space,
+  with this change during rte_abort FreeBSD now dumps the contents of the
+  whole reserved memory range, not just the used portion, to a core dump file.
+  Write this large core file can take a significant amount of time, causing
+  processes to appear hung on the system.
+
+  The work around for the issue is to set the system resource limits for core
+  dumps before running any tests e.g."limit coredumpsize 0". This will
+  effectively disable core dumps on FreeBSD. If they are not to be completely
+  disabled, a suitable limit, e.g. 1G might be specified instead of 0. This
+  needs to be run per-shell session, or before every test run. This change
+  can also be made persistent by adding "kern.coredump=0" to /etc/sysctl.conf
+
 
 Shared Library Versions
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