Hi folks,
I have noticed some hang-ups at the beginning of my builds on the master branch.
I have search a little and discovered that the connectivity check made by poky
was the root cause. In fact connectivity check use the CONNECTIVITY_CHECK_URIS
variable which is by default set to "https://www.example.com/";.
So I have made some tests with a little script which gets the URI 100 times:
$ cat connectivity_check.sh
#!/bin/sh
connectivity_check()
{
local ok=0
for i in $(seq 100)
do
$@ > /dev/null && ok=$(($ok + 1))
done
echo $ok $@
}
connectivity_check wget -qO- --timeout=1 --tries=1 $1
connectivity_check curl -s --connect-timeout 1 $1
Note that in the script, I use wget and curl to see if there are any differences
but I don't think that's a thing.
Here are the results:
$ time ./connectivity_check.sh https://example.com
45 wget -qO- --timeout=1 --tries=1 https://example.com
45 curl -s --connect-timeout 1 https://example.com
real 2m23.595s
user 0m3.352s
sys 0m1.834s
$ time ./connectivity_check.sh https://openembedded.org
100 wget -qO- --timeout=1 --tries=1 https://openembedded.org
100 curl -s --connect-timeout 1 https://openembedded.org
real 4m36.188s
user 0m3.853s
sys 0m1.761s
$ time ./connectivity_check.sh https://google.com
100 wget -qO- --timeout=1 --tries=1 https://google.com
100 curl -s --connect-timeout 1 https://google.com
real 0m36.328s
user 0m4.265s
sys 0m2.028s
So "example.com" is clearly not a good domain to do connectivity checks.
The "openembedded.org" domain is good but have a slow response time.
And finally "google.com" which have all sort of speedy networking stuff is very
efficient.
---
I think the CONNECTIVITY_CHECK_URIS variable must be updated and not use the
"example.com" domain anymore. Using "google.com" may be the best option. But
eetting up a custom domain like "connectivitycheck.openembedded.org" could be
another idea.
Any ideas ?
Jean-Marie LEMETAYER
Passionate embedded systems engineer
Savoir-faire Linux
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