[PULL 8/9] tests/migration/postcopy: trim migration bandwidth

["Dr. David Alan Gilbert (git)" <dgilbert@redhat.com>]

From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>

On slow hosts with tcg we were sometimes finding that the migration
would complete during precopy and never get into the postcopy test.
Trim back the bandwidth a bit to make that much less likely.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20190923131022.15498-3-dgilbert@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Acked-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Cleber Rosa <crosa@redhat.com>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
---
 tests/migration-test.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/migration-test.c b/tests/migration-test.c
index 9c62ee5331..221a33d083 100644
--- a/tests/migration-test.c
+++ b/tests/migration-test.c
@@ -753,7 +753,7 @@ static int migrate_postcopy_prepare(QTestState **from_ptr,
      * quickly, but that it doesn't complete precopy even on a slow
      * machine, so also set the downtime.
      */
-    migrate_set_parameter_int(from, "max-bandwidth", 100000000);
+    migrate_set_parameter_int(from, "max-bandwidth", 30000000);
     migrate_set_parameter_int(from, "downtime-limit", 1);
 
     /* Wait for the first serial output from the source */
-- 
2.21.0