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| author | Li Qiang <liq3ea@gmail.com> | 2018-08-01 06:00:20 -0700 |
|---|---|---|
| committer | Juan Quintela <quintela@redhat.com> | 2018-08-22 11:42:34 +0200 |
| commit | 4cbc9c7ffd95d2702cf7ffb3bfdf3f1f0ffdca07 (patch) | |
| tree | c801c82f52bf803b7eae1fc360bc665ade81f26b /migration/migration.h | |
| parent | 3eb21fe9e5a06e485dbb27838422ef85f4ae7967 (diff) | |
| download | qemu-4cbc9c7ffd95d2702cf7ffb3bfdf3f1f0ffdca07.zip | |
migrate/cpu-throttle: Add max-cpu-throttle migration parameter
Currently, the default maximum CPU throttle for migration is
99(CPU_THROTTLE_PCT_MAX). This is too big and can make a remarkable
performance effect for the guest. We see a lot of packets latency
exceed 500ms when the CPU_THROTTLE_PCT_MAX reached. This patch set
adds a new max-cpu-throttle parameter to limit the CPU throttle.
Signed-off-by: Li Qiang <liq3ea@gmail.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Diffstat (limited to 'migration/migration.h')
| -rw-r--r-- | migration/migration.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/migration/migration.h b/migration/migration.h index 64a7b33735..eb0c04a7b4 100644 --- a/migration/migration.h +++ b/migration/migration.h @@ -266,6 +266,7 @@ bool migrate_colo_enabled(void); bool migrate_use_block(void); bool migrate_use_block_incremental(void); +int migrate_max_cpu_throttle(void); bool migrate_use_return_path(void); bool migrate_use_compression(void); |