[PATCH] Revert "add sleep between start of iperf server and client"

[Jan Tluka]

This reverts commit a961862ff4734b609d7b6325bc2555829833f906.

Some issues popped up when this patch was used.

First issue was with the CPUStatMeasurement that is used in ENRT recipes.
The 2 seconds delay caused the measurement to include samples when the CPUs
were idle and reported 1-2% lower utilization.

Second issue was a result of iperf bug [1], when the iperf measures CPU
utilization from the moment the iperf server program is started, again
this includes 2 seconds of idling.

Until both issues are dealt with, the simplest solution is to revert the
patch.

[1] https://github.com/esnet/iperf/issues/1076

Signed-off-by: Jan Tluka 
---
 lnst/RecipeCommon/Perf/Measurements/IperfFlowMeasurement.py | 1 -
 1 file changed, 1 deletion(-)

diff --git a/lnst/RecipeCommon/Perf/Measurements/IperfFlowMeasurement.py b/lnst/RecipeCommon/Perf/Measurements/IperfFlowMeasurement.py
index c0ead127..c1939875 100644
--- a/lnst/RecipeCommon/Perf/Measurements/IperfFlowMeasurement.py
+++ b/lnst/RecipeCommon/Perf/Measurements/IperfFlowMeasurement.py
@@ -57,7 +57,6 @@ class IperfFlowMeasurement(BaseFlowMeasurement):
         for flow in test_flows:
             flow.server_job.start(bg=True)

-        time.sleep(2)
         for flow in test_flows:
             flow.client_job.start(bg=True)