[v1] Migration patches

[Qemu-devel] [PULL 06/10] multifd: Change default packet size

Juan Quintela posted 10 patches 6 years, 8 months ago

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Maintainers: Markus Armbruster <armbru@redhat.com>, Eric Blake <eblake@redhat.com>, "Dr. David Alan Gilbert" <dgilbert@redhat.com>, Laurent Vivier <lvivier@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>, Juan Quintela <quintela@redhat.com>, Thomas Huth <thuth@redhat.com>

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[Qemu-devel] [PULL 06/10] multifd: Change default packet size

Posted by Juan Quintela 6 years, 8 months ago

We moved from 64KB to 512KB, as it makes less locking contention
without any downside in testing.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
---
 migration/ram.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/migration/ram.c b/migration/ram.c
index 77c1878292..700c345ec5 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -584,7 +584,7 @@ exit:
 #define MULTIFD_FLAG_SYNC (1 << 0)
 
 /* This value needs to be a multiple of qemu_target_page_size() */
-#define MULTIFD_PACKET_SIZE (64 * 1024)
+#define MULTIFD_PACKET_SIZE (512 * 1024)
 
 typedef struct {
     uint32_t magic;
-- 
2.20.1