I made one last ditch attempt to arrive at some sort of epiphany.

1) I tried the PUT using localhost. It still took me 16 seconds (this was
probably the weirdest result yet).
2) I built a dummy httpd that just read data as fast as it could. It took
16 seconds.
3) I made my dummy client use non-blocking i/o with selects. No noticable
depreciation in it's speed.
4) I rebuilt curl using gcc 3.2. The test still took 16 seconds.

Well, there is something to be said for consistency. I can't move 1.6 mb
in less than 16 seconds with curl.

I'm going to take a few days off from this. I think I've beaten it long
enough. Unfortunately I think I will have too revisit it again because the
throughput I'm seeing is going to become an issue.

If anyone in the community is using curl on W2K to HTTP PUT, I'd appreciate
any benchmarks you could provide for comparison. It would be nice to know
if this is a platform issue or just my issue :-)

                                                                                                                                                 
                      Daniel Stenberg
                      <daniel_at_haxx.se> To: libcurl Mailing list <curl-library_at_lists.sourceforge.net>
                      Sent by: cc:
                      curl-library-admin_at_lists.sour Subject: RE: HTTP PUT performance issues
                      ceforge.net
                                                                                                                                                 
                                                                                                                                                 
                      12/06/2002 03:09 AM
                      Please respond to
                      curl-library
                                                                                                                                                 
                                                                                                                                                 

On Thu, 5 Dec 2002 RBramante_at_on.com wrote:

> Why I am seeing this and why Daniel does not (my dummy app and curl
perform
> the put in the same time) for him is not clear. Maybe it is windows
> specific? Maybe it is some bizarre interaction between curl and this
> specific webserver (tomcat)? Maybe several factors specific to my
> environment?
>
> I'm out of ideas. It would be interesting if some other people took my
> dummy app and ran it side by side with curl and see what the results are.

I can't say I have many ideas left either.

Anyway, I took my tests one step further and fired up 'nc' on another
computer that sits connected to mine on a 100mbit ethernet (another Linux
host, this one a Celeron 600MHz), to check that it wasn't something weird
going on just because I was working on localhost.

The test results turned out very similar to those I saw before, with the
exception that the speeds were reduced due to the limited bandwidth.

They all perform at roughly 11MB/sec, which should be just about maximum
speed on this.

So to summarize: I just can't understand or repeat the results you're
experiencing.

--
 Daniel Stenberg -- curl, cURL, Curl, CURL. Groks URLs.
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