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Re: Speed comparison wget vs. curl (HTTPS/HTTP1/GnuTLS)

From: Tim Rühsen <tim.ruehsen_at_gmx.de>
Date: Wed, 29 Jun 2016 22:42:54 +0200

On Wednesday 29 June 2016 21:15:34 Dima Tisnek wrote:
> Tim,
>
> Is the response same size?
> Are Content-Encoding and Transfer-Encoding same in the responses?

Both responses look the same:
HTTP/1.1 404 Not Found
Content-Type: text/html; charset=UTF-8
Content-Length: 1567
Date: Wed, 29 Jun 2016 20:33:41 GMT

> Do you think it's a regression relative to older curl?

Can't remember making a test like this before.

I thought it might be a request to the OCSP responder(s), since --cert-status
(OCSP stapling) is off by default. But I couldn't see anything with wireshark.
Does curl support OCSP beyong stapling ? I couldn't find an option for that...

> On 29 June 2016 at 19:59, Tim Rühsen <tim.ruehsen_at_gmx.de> wrote:
> > Hi,
> >
> > I recently made a few comparisons between curl 7.50.0-DEV and wget 1.18
> > and
> > was astonished about wget outperforming curl by some fair amount on single
> > HTTPS request/response cycles.
> >
> > So my question goes... what is 'wrong' with that version of curl. Or what
> > did I oversee - maybe some special options ?
> >
> > Some details from here:
> > Debian SID amd64, both wget and curl built/installed with GnuTLS
> > (3.4.13)
> > Intel(R) Core(TM) i5-3570K CPU @ 3.40GHz
> > 2MBit/s DSL, ping to www.google.com is ~106ms
> >
> > Downloading a non-existent page at www.google.com (a.html) via
> > HTTPS/HTTP1.1. The figures from 'time' are the fastest I got in 10 tries.
> >
> > $ time curl -s -o/dev/null https://www.google.com/a.html
> > real 0m0.744s
> > user 0m0.092s
> > sys 0m0.016s
> >
> > $ time wget -q -o/dev/null --no-alpn https://www.google.com/a.html
> > real 0m0.507s
> > user 0m0.016s
> > sys 0m0.008s
> >
> > Looks like there is some (pretty huge ~ 240ms) startup penalty hidden
> > somewhere. Building with OpenSSL makes not much difference.
> >
> > BTW, the only possibility to disable HTTP2 was using --no-alpn. --no-http2
> > did not switch if off.
> >
> > Regards, Tim
> >
> >
> > $ curl --version
> > curl 7.50.0-DEV (x86_64-pc-linux-gnu) libcurl/7.50.0-DEV GnuTLS/3.4.13
> > zlib/1.2.8 libidn/1.32 libpsl/0.11.0 (+libicu/55.1) nghttp2/1.11.1
> > Protocols: dict file ftp ftps gopher http https imap imaps pop3 pop3s rtsp
> > smb smbs smtp smtps telnet tftp
> > Features: IDN IPv6 Largefile NTLM NTLM_WB SSL libz TLS-SRP HTTP2
> > UnixSockets PSL
> >
> > $ wget --version
> > GNU Wget 1.18 built on linux-gnu.
> >
> > -cares +digest -gpgme +https +ipv6 +iri +large-file -metalink +nls
> > +ntlm +opie +psl +ssl/gnutls
> >
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Received on 2016-06-29