[oe-commits] [openembedded-core] 03/64: python3: Avoid hanging test

[git at git.openembedded.org]

This is an automated email from the git hooks/post-receive script.

rpurdie pushed a commit to branch master-next
in repository openembedded-core.

commit a136ce84f55aaede0acc72a9e0c7b4b7dd4c543e
Author: Richard Purdie <richard.purdie at linuxfoundation.org>
AuthorDate: Sun Apr 7 23:15:04 2019 +0100

    python3: Avoid hanging test
    
    Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
---
 .../python/python3/ptesthack.patch                 | 49 ++++++++++++++++++++++
 meta/recipes-devtools/python/python3_3.7.2.bb      |  1 +
 2 files changed, 50 insertions(+)

diff --git a/meta/recipes-devtools/python/python3/ptesthack.patch b/meta/recipes-devtools/python/python3/ptesthack.patch
new file mode 100644
index 0000000..3f55896
--- /dev/null
+++ b/meta/recipes-devtools/python/python3/ptesthack.patch
@@ -0,0 +1,49 @@
+This test hangs under 5.0 kernels onwards. It appears to be caused by the commit in the kernel:
+
+commit 4f693b55c3d2d2239b8a0094b518a1e533cf75d5 (HEAD, refs/bisect/bad)
+Author: Eric Dumazet <edumazet at google.com>
+Date:   Tue Nov 27 14:42:03 2018 -0800
+
+    tcp: implement coalescing on backlog queue
+    
+    In case GRO is not as efficient as it should be or disabled,
+    we might have a user thread trapped in __release_sock() while
+    softirq handler flood packets up to the point we have to drop.
+    
+    This patch balances work done from user thread and softirq,
+    to give more chances to __release_sock() to complete its work
+    before new packets are added the the backlog.
+    
+    This also helps if we receive many ACK packets, since GRO
+    does not aggregate them.
+    
+    This patch brings ~60% throughput increase on a receiver
+    without GRO, but the spectacular gain is really on
+    1000x release_sock() latency reduction I have measured.
+    
+    Signed-off-by: Eric Dumazet <edumazet at google.com>
+    Cc: Neal Cardwell <ncardwell at google.com>
+    Cc: Yuchung Cheng <ycheng at google.com>
+    Acked-by: Neal Cardwell <ncardwell at google.com>
+    Signed-off-by: David S. Miller <davem at davemloft.net>
+
+
+Reported to upstream kernel for advice: https://lore.kernel.org/netdev/85aabf9d4f41b6c57629e736993233f80a037e59.camel@linuxfoundation.org/T/#u
+
+Disable the test for now to stop ptests hanging
+
+Upstream-Status: Inappropriate [real cause of issue still TBD]
+
+Index: Python-3.7.2/Lib/test/test_httplib.py
+===================================================================
+--- Python-3.7.2.orig/Lib/test/test_httplib.py
++++ Python-3.7.2/Lib/test/test_httplib.py
+@@ -1114,7 +1114,7 @@ class BasicTest(TestCase):
+         self.assertEqual(sock.file.read(), extradata) #we read to the end
+         resp.close()
+ 
+-    def test_response_fileno(self):
++    def atest_response_fileno(self):
+         # Make sure fd returned by fileno is valid.
+         serv = socket.socket(
+             socket.AF_INET, socket.SOCK_STREAM, socket.IPPROTO_TCP)
diff --git a/meta/recipes-devtools/python/python3_3.7.2.bb b/meta/recipes-devtools/python/python3_3.7.2.bb
index 5c64bc8..3d44bdc 100644
--- a/meta/recipes-devtools/python/python3_3.7.2.bb
+++ b/meta/recipes-devtools/python/python3_3.7.2.bb
@@ -21,6 +21,7 @@ SRC_URI = "http://www.python.org/ftp/python/${PV}/Python-${PV}.tar.xz \
            file://0001-python3-use-cc_basename-to-replace-CC-for-checking-c.patch \
            file://0002-Don-t-do-runtime-test-to-get-float-byte-order.patch \
            file://0003-setup.py-pass-missing-libraries-to-Extension-for-mul.patch \
+           file://ptesthack.patch \
            "
 
 SRC_URI_append_class-native = " \

-- 
To stop receiving notification emails like this one, please contact
the administrator of this repository.