I ran the test code provided by the article, and got result:

% time     seconds  usecs/call     calls    errors syscall
------ ----------- ----------- --------- --------- ----------------
100.00    0.000418           4       100           gettimeofday
------ ----------- ----------- --------- --------- ----------------
100.00    0.000418                   100           total

So I guess it's true that the problem is related to it?

On Friday, May 25, 2018 at 1:48:50 AM UTC+8, Uli Kunitz wrote:
>
> The following explanation  might be relevant:
>
>
> https://blog.packagecloud.io/eng/2017/03/08/system-calls-are-much-slower-on-ec2/
>
> The Go runtime, at least for 1.10, supports VDSO on Linux.
>

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