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[Qemu-devel] [PATCH v2 0/8] Migration stats
From: |
Juan Quintela |
Subject: |
[Qemu-devel] [PATCH v2 0/8] Migration stats |
Date: |
Sat, 18 Aug 2012 13:17:07 +0200 |
Hi
v2:
- rebase on top of master
- apply all review comments for Eric & Luiz (1st time writting Eric correctly)
- dropped dirty_pages_rate: requires migration bitmap changes
- add examples were missing
- get feedback from several people that they were useful
- Intregrated migration bitmap sync, otherwise, we are transferring
unmapped pages twice
- once there, minimal g_realloc() not needed NULL test
Please comment
v1:
This modifies the output of info migrate/qmp_query_migrate to add the
stats that I got request for.
- It moves total time to MigrationInfo instead of ram (luiz suggestion)
- Prints the real downtime that we have had
really, it prints the total downtime of the complete phase, but the
downtime also includes the last ram_iterate phase. Working on
fixing that one.
- Prints the expected downtime of the last time that w
e synchronized
the dirty bitmap with kvm. So we have one idea of what downtime
value we need for migration to converge.
- Prints the dirty_pages_rate, that is the number of pages that we
have written in the last second. This one prints always zero. To
fill it, I need the dirty bitmap changes on the migration_thread
series.
The following changes since commit 731dc9ecd4f2c3041538f7eb2d10eee0cb82da1b:
Update version to 1.2.0-rc0 (2012-08-16 13:56:34 -0500)
are available in the git repository at:
ssh://repo.or.cz/srv/git/qemu/quintela.git migration-next-20120819
for you to fetch changes up to 0fad89c1f4e6d4e48ab786acc3aa18e171b0fab2:
migration: print expected downtime in info migrate (2012-08-18 12:40:36 +0200)
(Yes, I don't know in what day I live and put 19 instead of 18th. It
is not that the patches are coming from the future O:-)
Juan Quintela (8):
buffered_file: g_realloc() can't fail
fix migration sync
migration: move total_time from ram stats to migration info
migration: store end_time in a local variable
migration: print total downtime for final phase of migration
migration: rename expected_time to expected_downtime
migration: export migrate_get_current()
migration: print expected downtime in info migrate
arch_init.c | 20 ++++++++++++--------
buffered_file.c | 10 +---------
hmp.c | 12 ++++++++++--
migration.c | 18 +++++++++++++-----
migration.h | 3 +++
qapi-schema.json | 24 +++++++++++++++++-------
qmp-commands.hx | 15 ++++++++++++---
7 files changed, 68 insertions(+), 34 deletions(-)
--
1.7.11.2
- [Qemu-devel] [PATCH v2 0/8] Migration stats,
Juan Quintela <=