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Re: Using libcurl sending much more HTTP request in parallel

From: Jack via curl-library <curl-library_at_cool.haxx.se>
Date: Tue, 15 Aug 2017 13:29:00 +0000

Thanks,I will dig this

Daniel Stenberg <daniel_at_haxx.se>

> On Tue, 15 Aug 2017, Jack wrote:
>
> > Thanks,I modified my application, but I still have HTTPS performance
> issue.
> > I send 40 https request at the same time. They all create new connection
> and
> > connect server. I found CPU burst to 56%, then down, this high CPU time
> > duration about 500ms .
>
> ...
>
> > Do you have any good idea for tuning this issue?
>
> Well, is it really an issue or is it simply what to expect when doing many
> simultaneous TLS handshakes?
>
> If you're using the libcurl API correctly and you think this is an issue,
> then
> digging into the internals and looking at what it times, what takes CPU
> time
> is the next step and then of course to analyze if there are any wrong
> things
> performed, or non-performant functions that can be improvied.
>
> --
>
> / daniel.haxx.se
>

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Received on 2017-08-15