[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen master] docs: Update credit/credit2 feature docs reflecting new default scheduler
commit 9db777dda33ba92c0a0feca76de5bba57358ebcc Author: George Dunlap <george.dunlap@xxxxxxxxxx> AuthorDate: Thu Feb 7 12:05:43 2019 +0000 Commit: George Dunlap <george.dunlap@xxxxxxxxxx> CommitDate: Fri Feb 8 11:37:00 2019 +0000 docs: Update credit/credit2 feature docs reflecting new default scheduler Signed-off-by: George Dunlap <george.dunlap@xxxxxxxxxx> Acked-by: Jan Beulich <jbeulich@xxxxxxxx> Release-acked-by: Juergen Gross <jgross@xxxxxxxx> --- docs/features/sched_credit.pandoc | 11 +++++++---- docs/features/sched_credit2.pandoc | 15 +++++++-------- 2 files changed, 14 insertions(+), 12 deletions(-) diff --git a/docs/features/sched_credit.pandoc b/docs/features/sched_credit.pandoc index 79587d8ad9..706513de6e 100644 --- a/docs/features/sched_credit.pandoc +++ b/docs/features/sched_credit.pandoc @@ -12,16 +12,18 @@ # Overview -Credit (also known as Credit1) is the default virtual CPU (vCPU) scheduler +Credit (also known as Credit1) is the old virtual CPU (vCPU) scheduler of the Xen hypervisor. It is a general purpose, weighted fair-share scheduler. # User details -Xen supports multiple schedulers. As said, Credit is the default, so it -is used automatically, unless the `sched=$SCHED` (with `$SCHED` different -than `credit`) parameter is passed to Xen via the bootloader. +Xen supports multiple schedulers. Credit is no longer the default. In +order to use it as the Xen scheduler the following parameter should be +passed to the hypervisor at boot: + + `sched=credit` Once the system is live, for creating a cpupool with Credit as its scheduler, either compile a cpupool configuration file, as described @@ -94,4 +96,5 @@ by also doing the following: Date Revision Version Notes ---------- -------- -------- ------------------------------------------- 2016-10-14 1 Xen 4.8 Document written +2019-02-7 3 Xen 4.12 No longer default scheduler ---------- -------- -------- ------------------------------------------- diff --git a/docs/features/sched_credit2.pandoc b/docs/features/sched_credit2.pandoc index bce843e1fc..436ff9f8f6 100644 --- a/docs/features/sched_credit2.pandoc +++ b/docs/features/sched_credit2.pandoc @@ -12,21 +12,19 @@ # Overview -Credit2 is one of the virtual CPU (vCPU) scheduler available in the +Credit2 is the default virtual CPU (vCPU) scheduler available in the Xen hypervisor. Credit2 was designed as a general purpose scheduler, with particular focus on improving handling of mixed workloads, scalability and -support for low latency applications inside VMs, with respect to -Credit1. +support for low latency applications inside VMs. # User details -Credit2 is not in use by default. In order to use it as the Xen -scheduler the following parameter should be passed to the hypervisor -at boot: - - `sched=credit2` +Xen supports multiple schedulers. As said, Credit2 is the default, so +it is used automatically, unless the `sched=$SCHED` (with `$SCHED` +different than `credit2`) parameter is passed to Xen via the +bootloader. Other parameters are available for tuning the behavior of Credit2 (see `docs/misc/xen-command-line.markdown` for a complete list and @@ -106,4 +104,5 @@ Date Revision Version Notes ---------- -------- -------- ------------------------------------------- 2016-10-14 1 Xen 4.8 Document written 2017-11-6 2 Xen 4.10 Soft-affinity and caps implemented +2019-02-7 3 Xen 4.12 Made the default scheduler ---------- -------- -------- ------------------------------------------- -- generated by git-patchbot for /home/xen/git/xen.git#master _______________________________________________ Xen-changelog mailing list Xen-changelog@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/xen-changelog
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