JDevlieghere created this revision.
JDevlieghere added reviewers: labath, davide.
Herald added a project: LLDB.
When we upgraded pexpect to a more recent version, we experienced issues where
pexpect was sending commands faster to LLDB could process. The problem was
especially apparent on CI systems, where the high load caused LLDB to be
inevitable more constrained. Usually the issue would go away when running the
test by itself and would reappear when running multiple tests concurrently.
When we looked at this, the pexecpt implementation already contains a small
timeout. Apparently that sometimes wasn't sufficient for LLDB.
Rather than adding timeouts in the affected tests, I would propose to just do
it in lldbpexpect.py. It's definitely not the best solution, but it does solve
the flakiness issues I'm investigating.
Repository:
rLLDB LLDB
https://reviews.llvm.org/D60563
Files:
lldb/packages/Python/lldbsuite/test/lldbpexpect.py
Index: lldb/packages/Python/lldbsuite/test/lldbpexpect.py
===================================================================
--- lldb/packages/Python/lldbsuite/test/lldbpexpect.py
+++ lldb/packages/Python/lldbsuite/test/lldbpexpect.py
@@ -4,6 +4,7 @@
# System modules
import os
import sys
+import time
# Third-party modules
import six
@@ -46,6 +47,7 @@
timeout = self.timeout
if exact is None:
exact = False
+ time.sleep(0.1) # Give LLDB time to process
if exact:
return self.child.expect_exact(patterns, timeout=timeout)
else:
Index: lldb/packages/Python/lldbsuite/test/lldbpexpect.py
===================================================================
--- lldb/packages/Python/lldbsuite/test/lldbpexpect.py
+++ lldb/packages/Python/lldbsuite/test/lldbpexpect.py
@@ -4,6 +4,7 @@
# System modules
import os
import sys
+import time
# Third-party modules
import six
@@ -46,6 +47,7 @@
timeout = self.timeout
if exact is None:
exact = False
+ time.sleep(0.1) # Give LLDB time to process
if exact:
return self.child.expect_exact(patterns, timeout=timeout)
else:
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