From b56db91bc339e08d2a34b9d14c348b1c228b0349 Mon Sep 17 00:00:00 2001 From: Jim Fehlig Date: Wed, 21 Mar 2018 15:39:27 -0600 Subject: [PATCH] news: Xen: announce removal of hard-code scheduler weight Also describe a possible side-affect due to changes in the default (unspecified) value from 1000 to 256. Signed-off-by: Jim Fehlig Reviewed-by: John Ferlan --- docs/news.xml | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/docs/news.xml b/docs/news.xml index 75a0543084..93ab59cf42 100644 --- a/docs/news.xml +++ b/docs/news.xml @@ -66,6 +66,22 @@ If someone customizing IP address inside VM, it will be helpful. + + + Xen: Remove hard-coded scheduler weight + + + The libxl driver was accidentally hard-coding the per-domain + scheduler weight to 1000, silently ignoring any user-provided + <shares> in <cputune>. The + driver now honors <shares>, and defers setting + a default value to Xen. Note that the Xen default is 256, so any + domains started after this improvement will have one fourth the + shares of previously started domains. If all domains must have + equal CPU shares, administrators must manually set the weight of + previously started domains to 256, or restart them. + +
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