[v1] Eliminate multifd flush

[PATCH 0/5] Eliminate multifd flush

Juan Quintela posted 5 patches 1 year, 10 months ago

Diff against v2 v3 v4 v5 v5 v5 v5 v6 v7 v8 v9
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git fetch https://github.com/patchew-project/qemu tags/patchew/20220621140507.1246-1-quintela@redhat.com

Maintainers: Eduardo Habkost <eduardo@habkost.net>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, "Philippe Mathieu-Daudé" <f4bug@amsat.org>, Yanan Wang <wangyanan55@huawei.com>, Juan Quintela <quintela@redhat.com>, "Dr. David Alan Gilbert" <dgilbert@redhat.com>

There is a newer version of this series

migration/migration.h |  6 ++++
hw/core/machine.c     |  1 +
migration/migration.c | 10 ++++++
migration/ram.c       | 80 ++++++++++++++++++++++++++++---------------
4 files changed, 70 insertions(+), 27 deletions(-)

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[PATCH 0/5] Eliminate multifd flush

Posted by Juan Quintela 1 year, 10 months ago

Upstream multifd code synchronize all threads after each RAM section.  This is suboptimal.
Change it to only flush after we go trough all ram.

Preserve all semantics for old machine types.

Juan Quintela (5):
  multifd: Create property multifd-sync-each-iteration
  multifd: Put around all sync calls tests for each iteration
  migration: Simplify ram_find_and_save_block()
  migration: Make find_dirty_block() return a single parameter
  multifd: Only sync once each full round of memory

 migration/migration.h |  6 ++++
 hw/core/machine.c     |  1 +
 migration/migration.c | 10 ++++++
 migration/ram.c       | 80 ++++++++++++++++++++++++++++---------------
 4 files changed, 70 insertions(+), 27 deletions(-)

-- 
2.34.1