From 25d4d442dfe41698079a9c3d3789876f5c5a3e1b Mon Sep 17 00:00:00 2001 From: Anatoly Burakov Date: Tue, 29 May 2018 16:43:06 +0100 Subject: [PATCH] doc: add multiprocess known issue in release notes Also, reference Bugzilla entry for keeping most current information in one place. Signed-off-by: Anatoly Burakov Acked-by: John McNamara --- doc/guides/rel_notes/release_18_05.rst | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/doc/guides/rel_notes/release_18_05.rst b/doc/guides/rel_notes/release_18_05.rst index c77729147e..ffab503290 100644 --- a/doc/guides/rel_notes/release_18_05.rst +++ b/doc/guides/rel_notes/release_18_05.rst @@ -588,6 +588,19 @@ Known Issues Also, make sure to start the actual text at the margin. ========================================================= +* **Secondary process launch is not reliable.** + + Recent memory hotplug patches have made multiprocess startup less reliable + than it was in the past. A number of workarounds are known to work depending + on the circumstances. As such it isn't recommended to use the secondary + process mechanism for critical systems. The underlying issues will be + addressed in upcoming releases. + + The issue is explained in more detail, including potential workarounds, + in the Bugzilla entry referenced below. + + Bugzilla entry: https://dpdk.org/tracker/show_bug.cgi?id=50 + * **pdump is not compatible with old applications.** As we changed to use generic multi-process communication for pdump negotiation -- 2.20.1