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perf(computes): the host's info is read once per request

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The overview read the host's info four times, now once (12 libvirt calls).
A connection object keeps it next to the capabilities, and the VM page and
VM stats take it from there; the VM page's cached_reads block holds only
the VM's own data. Free memory is still read each time.
This commit is contained in:
catborise 2026-10-09 15:52:11 +03:00
parent 9adc808d26
commit 57f592df70
6 changed files with 57 additions and 32 deletions
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4
vrtManager/test_usage.py
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@ -55,7 +55,7 @@ def instance(state, clock):
proxy._read_cache = None
proxy.instance = FakeDomain(state, clock)
proxy._XMLDesc = lambda flags: XML
proxy._host_info = lambda: ["x86_64", 0, 4] # 4 host CPUs
proxy.host_info = ["x86_64", 0, 4] # 4 host CPUs
proxy.get_status = lambda: state
return proxy
@ -106,7 +106,7 @@ class UsageTestCase(unittest.TestCase):
proxy.instance.domain_id = 8
def other_host_cpus(proxy):
proxy._host_info = lambda: ["x86_64", 0, 8]
proxy.host_info = ["x86_64", 0, 8]
def nic_renamed(proxy):
proxy._XMLDesc = lambda flags: XML.replace("vnet0", "vnet1")