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Description of problem:
KVM based virtualization require specific settings. Currently we describe the profile in our Best Practices Guide and users have to copy and paste it.
We think it would make totally sense to add it to the tuned-profiles-sap-hana RPM package since there is already a package that is shipped specifically for SAP HANA (which the sap-hana-kvm-guest profile actually includes).
Target version and exact parameter set is TBD but let's get the discussion and (hopefully) approval through this BZ going.
This is the content of /usr/lib/tuned/sap-hana-kvm-guest/haltpoll.sh (mode: 0744)
#!/bin/bash
if [ "$1" == "start" ]; then
modprobe cpuidle-haltpoll force
fi
This is the content of /usr/lib/tuned/sap-hana-kvm-guest/tuned.conf
#
# tuned configuration
#
[main]
summary=Optimize for running SAP HANA on KVM inside a virtual guest
include=sap-hana
[haltpoll]
type=script
script=${i:PROFILE_DIR}/haltpoll.sh
[sysfs]
/sys/devices/system/clocksource/clocksource0/current_clocksource=tsc
/sys/module/haltpoll/parameters/guest_halt_poll_ns=2400000
/sys/module/haltpoll/parameters/guest_halt_poll_grow_start=2400000
# This are the parameters that we need to clarify if we need to change them or the can stay on default/what sap-hana profile sets
# [sysctl]
# kernel.sched_latency_ns=12000000
# kernel.sched_migration_cost_ns=500000
# kernel.sched_min_granularity_ns=12000000
# kernel.sched_wakeup_granularity_ns=15000000
[bootloader]
cmdline_saphana=skew_tick=1
Comment 4Jaroslav Škarvada
2023-06-14 08:53:23 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (tuned bug fix and enhancement update), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHBA-2023:7182
Comment 24Red Hat Bugzilla
2024-04-18 04:25:04 UTC
The needinfo request[s] on this closed bug have been removed as they have been unresolved for 120 days