[Xen-devel] [PATCH V3] libxl: Increase device model startup timeout to 1min.

[Anthony PERARD <anthony.perard@xxxxxxxxxx>]

On a busy host, QEMU may take more than 10s to load and start.

This is likely due to a bug in Linux where the I/O subsystem sometime
produce high latency under load and result in QEMU taking a long time to
load every single dynamic libraries.

Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
---
 tools/libxl/libxl_internal.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/libxl/libxl_internal.h b/tools/libxl/libxl_internal.h
index d52589e..d6f87c1 100644
--- a/tools/libxl/libxl_internal.h
+++ b/tools/libxl/libxl_internal.h
@@ -85,7 +85,9 @@
 #define LIBXL_INIT_TIMEOUT 10
 #define LIBXL_DESTROY_TIMEOUT 10
 #define LIBXL_HOTPLUG_TIMEOUT 10
-#define LIBXL_DEVICE_MODEL_START_TIMEOUT 10
+/* QEMU may be slow to load and start due to a bug in Linux where the I/O
+ * subsystem sometime produce high latency under load. */
+#define LIBXL_DEVICE_MODEL_START_TIMEOUT 60
 #define LIBXL_STUBDOM_START_TIMEOUT 30
 #define LIBXL_QEMU_BODGE_TIMEOUT 2
 #define LIBXL_XENCONSOLE_LIMIT 1048576
-- 
Anthony PERARD


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