21395313330
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Ran 27 Jan 2026 11:25AM UTC

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Files 34

Run time 1min

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Committed 27 Jan 2026 11:24AM UTC coverage: 80.459%. Remained the same

Build # 21395313330

Build Type

push

github

Committed by

web-flow

Commit Message

CA-423173: XAPI underestimates low memory emergency pool size (#6855)

The only Xen command-line related to this is `low_mem_virq_limit`, which
is 64MiB.

A new quicktest has shown that we are sometimes off by ~10MiB (between
`Host.compute_free_memory` and actual free memory as measured by a call
to Xenctrl physinfo) or more, and get failures booting VMs even after
`assert_can_boot_here` said yes. Sometimes the error messages can be
quite ugly, internal xenguest/xenopsd errors, instead of
HOST_NOT_ENOUGH_FREE_MEMORY.

After this change (together with
https://github.com/xapi-project/xen-api/pull/6854) the new quicktest
doesn't fail anymore.

PR to feature branch because this will need testing together with all
the other NUMA changes, it may expose latent bugs elsewhere.


The new testcase will get its own PR because it is quite large.

Run Details

3504 of 4355 relevant lines covered (80.46%)

0.8 hits per line

Jobs

ID	Job ID	Ran	Files	Coverage
1	python3.11 - 21395313330.1	27 Jan 2026 11:25AM UTC	34	80.46	GitHub Action Run

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