catborise f5276655fd perf(instances): the VM page reads each kind of domain XML once ... The VM page's getters read the domain XML on their own: one load made 86 libvirt calls for a real VM, 29 of them for the same three XML documents (live, live with secrets, persistent) and 6 for the host capabilities. Each call is a round trip to the host. wvmInstance.cached_reads() is a block in which _XMLDesc (per flags value) and get_cap_xml are read from libvirt once; it ends with the block, even on an error, does not nest, and _defineXML drops it. Outside a block every read goes to libvirt as before. Only the VM page view, which does not change the VM, uses it, around its rendering. Views that change the VM keep reading fresh XML: most changes (devices, QoS, memory) do not go through _defineXML, and several views read, change and define more than once in one request. Measured on the test host: 86 -> 55 calls (XMLDesc 29 -> 3, getCapabilities 6 -> 1) for one VM, 82 -> 54 for another; the page took 0.23-0.25 s before, 0.14-0.15 s after. The HTML of both pages is identical before and after (CSRF tokens aside). A test renders the page on libvirt's test driver through the real getters: 25 XML reads before, one per kind now.		2026-10-05 21:24:07 +03:00
..
api	fix(instances): CD-ROM bus, USB controller and MACs of a new VM	2026-10-04 18:33:28 +03:00
fixtures	Instances overhaul	2020-07-13 15:33:09 +06:00
migrations	fix(computes): VM ownership survives a move or a short absence	2026-10-04 01:08:11 +03:00
templates	fix(instances): every VM state has a label and the actions it allows	2026-10-05 19:34:30 +03:00
templatetags	fix(instances): every VM state has a label and the actions it allows	2026-10-05 19:34:30 +03:00
__init__.py	Fixe migrations for new deployments	2020-05-28 18:19:25 +06:00
apps.py	format python code with black	2022-11-02 08:54:35 +03:00
forms.py	fix(instances): only administrators choose where a console listens	2026-10-05 15:07:31 +03:00
livetest.py	fix(instances): domain edits start from the persistent definition	2026-10-04 01:08:11 +03:00
models.py	fix(instances): lists show a VM that cannot be read as unknown	2026-10-05 11:03:32 +03:00
states.py	fix(instances): every VM state has a label and the actions it allows	2026-10-05 19:34:30 +03:00
test_change_network.py	fix(instances): change the edited NIC instead of adding a new one	2026-10-04 01:08:11 +03:00
test_change_xml.py	fix(instances): the XML editor saves only while the VM is shut off	2026-10-04 19:13:20 +03:00
test_clone_permission.py	fix(instances): clone name and MAC read the same dhcpd.conf	2026-10-04 19:39:29 +03:00
test_console_listener.py	fix(instances): only administrators choose where a console listens	2026-10-05 15:07:31 +03:00
test_console_rule.py	chore: drop references to the local roadmap from code and tests	2026-10-04 11:09:25 +03:00
test_console_settings_access.py	fix(instances): the page of a VM on an unreachable host points to the list	2026-10-05 12:32:42 +03:00
test_create_instance.py	fix(instances): CD-ROM bus, USB controller and MACs of a new VM	2026-10-04 18:33:28 +03:00
test_create_rollback.py	chore: drop references to the local roadmap from code and tests	2026-10-04 11:09:25 +03:00
test_destroy.py	fix(instances): destroy and volume delete no longer lose disks	2026-10-04 01:08:11 +03:00
test_detail_reads.py	perf(instances): the VM page reads each kind of domain XML once	2026-10-05 21:24:07 +03:00
test_detail_unreachable.py	fix(instances): the page of a VM on an unreachable host points to the list	2026-10-05 12:32:42 +03:00
test_disk_isolation.py	chore: drop references to the local roadmap from code and tests	2026-10-04 11:09:25 +03:00
test_error_handling.py	fix(instances): failures reach the user; no redirect to other sites	2026-10-04 12:23:54 +03:00
test_gstfsd.py	fix: stop ignoring SIGCHLD process-wide	2026-10-04 13:40:53 +03:00
test_index.py	fix(instances): guard mutations and refresh lists after sync	2026-09-28 14:56:19 +03:00
test_index_host_alerts.py	fix(instances): host errors on the instance list are for administrators	2026-10-05 11:49:46 +03:00
test_list_rpc.py	perf(instances): instance lists read a VM's info once per row	2026-10-05 10:17:47 +03:00
test_list_unreachable.py	fix(instances): lists show a VM that cannot be read as unknown	2026-10-05 11:03:32 +03:00
test_live_clone.py	chore: drop references to the local roadmap from code and tests	2026-10-04 11:09:25 +03:00
test_live_create.py	fix(instances): CD-ROM bus, USB controller and MACs of a new VM	2026-10-04 18:33:28 +03:00
test_live_dataloss.py	chore: drop references to the local roadmap from code and tests	2026-10-04 11:09:25 +03:00
test_live_guest.py	test(instances): the guest sees the hardware WebVirtCloud configures	2026-10-04 16:39:02 +03:00
test_live_iso.py	chore: drop references to the local roadmap from code and tests	2026-10-04 11:09:25 +03:00
test_live_xml.py	chore: drop references to the local roadmap from code and tests	2026-10-04 11:09:25 +03:00
test_live_xml_effects.py	fix(instances): disk and agent channel changes on paused VMs	2026-10-04 17:10:49 +03:00
test_quota.py	fix(instances): the page of a VM on an unreachable host points to the list	2026-10-05 12:32:42 +03:00
test_quota_lock.py	fix(instances): disk edits keep their XML; changes lock per VM	2026-10-04 01:08:11 +03:00
test_root_pass.py	chore: drop references to the local roadmap from code and tests	2026-10-04 11:09:25 +03:00
test_security_mutations.py	chore: drop references to the local roadmap from code and tests	2026-10-04 11:09:25 +03:00
test_states.py	fix(instances): every VM state has a label and the actions it allows	2026-10-05 19:34:30 +03:00
test_template_flag.py	chore: drop references to the local roadmap from code and tests	2026-10-04 11:09:25 +03:00
test_update_console.py	feat(console): VNC is the only console type	2026-10-04 01:08:11 +03:00
test_xss.py	chore: drop references to the local roadmap from code and tests	2026-10-04 11:09:25 +03:00
tests.py	feat(console): VNC is the only console type	2026-10-04 01:08:11 +03:00
urls.py	fix: add an authorization matrix test and close the endpoints it finds	2026-10-02 20:33:12 +03:00
utils.py	fix(instances): the quota counts every VM and refuses what it cannot verify	2026-10-05 12:26:57 +03:00
views.py	perf(instances): the VM page reads each kind of domain XML once	2026-10-05 21:24:07 +03:00