Sean Mooney db305d2a4b enable openstack-cli-server and other perfromace tunings ...

This commit enabeles a number of performance optimizations
to tune the host vms memory and io by leveraging zswap
and other kernel parmaters to minimize the effect of io
latency and memory pressure.

The openstack-cli-server has been enabled in the nova ci
for several months now and has proven to speed up devstack
signifcantly, while this change does not enable it by
default in devstack it does enable it by default in the ci
jobs.

simiarly the zswap and other tuning remain disabled by default
in devstack but are enabled by default in the devstack job.

This change limits the qemu tb_cache_size to 128MB form 1G,
this requires libvirt 8.0.0 or newer. as bullseye and
openeuler-22.03 do not meet that requirement they have been
removed. libvirt 8.0.0 will be the new min version supported
in nova in the 2025.1 release so the decions was made
to drop supprot for older release now instead of doing it
at the start of the 2025.1 cycle. debain coverage is still
provided by the newer bookworm relase. openeuler-22.03 has
been superseded by the openeuler-24.03 lts release.
openeuler-24.03 is not currnetly aviable in ci but supprot
could be readded if desired however that is out os scope of
this change.

Change-Id: Ib45ca08c7e3e833b14f7e6ec496ad2d2f7073f99

2024-06-25 11:01:54 +01:00

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