Ah ha, that makes more sense. It didn't occur to me that it would take
multiple roundtrips for a single GET. Gee, now that I think about it, that
doesn't include the image gets either...
sd
···
-----Original Message-----
From: Sam Roberts [mailto:sroberts@uniserve.com]
Sent: Wednesday, May 17, 2006 4:53 PM
To: ruby-talk@ruby-lang.org
Subject: Re: bm + net/http sanity check
Quoting steve.debaun@seminis.com, on Thu, May 18, 2006 at 07:58:28AM +0900:
Only reason I'm asking: ping delta is about 100 ms, but the Net::HTTP
delta
is about 700 ms. This does not jive with what I'm expecting, at all.
Why not? Sounds ok, setting up, using, and closing down a tcp line
should take at least 3 roundtrips, I think, so you'd need at least 300,
and if the data transfer takes a bit of time, bit of tcp stack overhead,
bit of software doing stuff... sounds like 700 ms.
running tcpdump might tell you exactly whats going on, with pretty
accurate timestamps.
Cheers,
Sam
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Ah ha, that makes more sense. It didn't occur to me that it would take
multiple roundtrips for a single GET. Gee, now that I think about it, that
doesn't include the image gets either...
get() should just download the one page. It's not going to download the images contained within....
You might see if there is a head() (haven't looked, but i imagine there is). That will just query the server and the server will say "yeah, it's there", but won't return any data...
-philip
···
sd
-----Original Message-----
From: Sam Roberts [mailto:sroberts@uniserve.com]
Sent: Wednesday, May 17, 2006 4:53 PM
To: ruby-talk@ruby-lang.org
Subject: Re: bm + net/http sanity check
Quoting steve.debaun@seminis.com, on Thu, May 18, 2006 at 07:58:28AM +0900:
Only reason I'm asking: ping delta is about 100 ms, but the Net::HTTP
delta
is about 700 ms. This does not jive with what I'm expecting, at all.
Why not? Sounds ok, setting up, using, and closing down a tcp line
should take at least 3 roundtrips, I think, so you'd need at least 300,
and if the data transfer takes a bit of time, bit of tcp stack overhead,
bit of software doing stuff... sounds like 700 ms.
running tcpdump might tell you exactly whats going on, with pretty
accurate timestamps.
Cheers,
Sam
This e-mail message may contain privileged and/or confidential information,
and is intended to be received only by persons entitled to receive such
information. If you have received this e-mail in error, please notify the
sender immediately. Please delete it and all attachments from any servers,
hard drives or any other media. Other use of this e-mail by you is strictly
prohibited.
All e-mails and attachments sent and received are subject to monitoring,
reading and archival by Seminis. The recipient of this e-mail is solely
responsible for checking for the presence of "Viruses" or other "Malware".
Seminis accepts no liability for any damage caused by any such code
transmitted by or accompanying this e-mail or any attachment.