Signed-off-by: Bhanuprakash Bodireddy <[email protected]>
---
FAQ.md | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/FAQ.md b/FAQ.md
index 2f50b96..22345c3 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -1051,6 +1051,19 @@ A: The short answer is that this is a misuse of a "tap"
device. Use
users should not configure KVM "tap" devices as type "tap" (use
type "system", the default, instead).
+### Q: I observe packet loss at the beginning of RFC2544 tests on a
+ server running few hundred container apps bridged to OVS with traffic
+ generated by HW traffic generator. How can I fix this?
+
+A: This is expected behavior on virtual switches. RFC2544 tests were
+ designed for hardware switches, which don't have caches on the fastpath
+ that need to be heated. Traffic generators in order to prime the switch
+ use learning phase to heat the caches before sending the actual traffic
+ in test phase. In case of OVS the cache is flushed quickly and to
+ accommodate the traffic generator's delay between learning and test phase,
+ the max-idle timeout settings should be changed to 50000.
+
+ ovs-vsctl --no-wait set Open_vSwitch . other_config:max-idle=50000
## QOS
--
2.4.11
_______________________________________________
dev mailing list
[email protected]
http://openvswitch.org/mailman/listinfo/dev
