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gccgo, net: dial_test.go:75: all connections connected; expected some to time out #3307

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alberts opened this issue Mar 13, 2012 · 10 comments

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@alberts
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commented Mar 13, 2012

What steps will reproduce the problem?

make check-target-libgo

What is the expected output?

test pass

What do you see instead?

--- FAIL: net.TestDialTimeout (0.17 seconds)
dial_test.go:75: all connections connected; expected some to time out
FAIL
FAIL: net

Which compiler are you using (5g, 6g, 8g, gccgo)?

gccgo

Which operating system are you using?

linux, 64-bit build

Which revision are you using?  (hg identify)

commit 7714837c8d8c66a53d87e4de6818fe47e1bb51d3
Date: Fri Mar 9 11:49:50 2012 +0000
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@185136
138bc75d-0d04-0410-961f-82ee72b054a4

Please provide any additional information below.

Test fails quite quickly (0.17 seconds). Maybe a clue?
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commented Mar 13, 2012

Comment 1:

Does this happen consistently?

Labels changed: added priority-go1, gccgo, removed priority-triage.

@alberts

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commented Mar 13, 2012

Comment 2:

No, this is an intermittent thing.
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commented Mar 21, 2012

Comment 3:

Labels changed: added priority-later, removed priority-go1.

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commented Apr 23, 2012

Comment 4:

I'm not having much luck recreating this on Ubuntu Lucid.  I can't recall ever seeing
this error.
What distro are you running?  What kernel version?  What is the contents of the file
/proc/sys/net/core/somaxconn ?

Owner changed to @ianlancetaylor.

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commented Apr 25, 2012

Comment 5:

Fedora 16 x86-64. 3.something at the time I reported this. I'll check somaxconn and
rerun the tests to see if I can still reproduce.
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commented May 4, 2012

Comment 6:

I just tried a Fedora 16 x86_64 system, but I had no luck reproducing it there either.
You didn't mention the contents of /proc/sys/net/core/somaxconn.
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commented Jul 26, 2012

Comment 7:

Just hit this issue with 6g too. issue #3867.
@alberts

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commented Jul 26, 2012

Comment 8:

/proc/sys/net/core/somaxconn is 128
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commented Sep 12, 2012

Comment 9:

Status changed to Accepted.

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commented Mar 14, 2013

Comment 10:

This issue was closed by revision cdc6424.

Status changed to Fixed.

@alberts alberts added fixed labels Mar 14, 2013

mikioh pushed a commit that referenced this issue Apr 2, 2015

Mikio Hara
net: deflake TestDialTimeout
This change makes TestDialTimeout work on almost all the supported
platforms.

Updates #3016.
Updates #3307.
Updates #3867.
Updates #5380.
Updates #5349.

Change-Id: Iacf0ebea23cdd8f6c0333d70c667a5a5f5eb0ed2
Reviewed-on: https://go-review.googlesource.com/8220
Reviewed-by: Ian Lance Taylor <iant@golang.org>

@golang golang locked and limited conversation to collaborators Jun 24, 2016

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