Added known issue of rte_abort taking a long time on FreeBSD due to recent memory subsystem rework.
Signed-off-by: Reshma Pattan <reshma.pat...@intel.com> --- doc/guides/rel_notes/release_18_05.rst | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/doc/guides/rel_notes/release_18_05.rst b/doc/guides/rel_notes/release_18_05.rst index 3dcb62538..c01781956 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 due to memory subsytsem rework.** + + With the recent memory subsystem changes, DPDK processes now allocate a large + area of virtual memory address space. During rte_abort FreeBSD will dump 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 ----------------------- -- 2.14.3
