[pve-devel] [RFC ha-manager] make static usage calculation faster

[Fiona Ebner]

by avoiding overhead from load_config().

Benchmarked recompute_online_node_usage() again with ~300 HA services
(minimal containers) running on my virtual test cluster.

Timings with 'basic' were between 0.0004 - 0.002 seconds
(a bit worse today than last time)
Timings before these patches were between 0.007 - 0.016 seconds
(also a bit worse than last time)
Timings after these patches were between 0.0035 - 0.006 seconds

So only about twice as fast unfortunately. Reducing the number of
recompute_online_node_usage() calls might be necessary after all.

Probably not worth applying, as this didn't get much testing and is
not a huge improvement :/


Fiona Ebner (3):
  resources: get static stats: add cache parameter
  env: add get_static_guest_stats method
  manager/usage: cache static service stats to avoid overhead

 src/PVE/HA/Env.pm             |  6 ++++++
 src/PVE/HA/Env/PVE2.pm        | 15 +++++++++++++++
 src/PVE/HA/Manager.pm         |  1 +
 src/PVE/HA/Resources.pm       |  2 +-
 src/PVE/HA/Resources/PVECT.pm |  5 +++--
 src/PVE/HA/Resources/PVEVM.pm |  6 ++++--
 src/PVE/HA/Sim/Env.pm         |  7 +++++++
 src/PVE/HA/Sim/Resources.pm   |  2 +-
 src/PVE/HA/Usage/Static.pm    | 13 ++++++++++---
 9 files changed, 48 insertions(+), 9 deletions(-)

-- 
2.30.2