"Discover Cooking, Discuss Life."

Go Back   Discuss Cooking - Cooking Forums > Discuss Cooking Community Forums > Forum Admin: Tech Support & Announcements
Reply
 
Thread Tools Display Modes
 
Old 05-23-2014, 01:50 PM   #51
Chef Extraordinaire
 
taxlady's Avatar
 
Join Date: Sep 2010
Location: near Montreal, Quebec, Canada
Posts: 18,693
Send a message via Skype™ to taxlady
Quote:
Originally Posted by taxlady View Post
Is there a command for that? What's the syntax?
Quote:
Originally Posted by Roll_Bones View Post
BakeChef already posted the name of a site that does a ping test. I was wondering if there was a command line prompt to ping DC and tell me how fast the ping was.

Both pingtest.net and the site linked in your response are just pinging between wherever the server is hosted and your computer. DC isn't in there at all. It does give you an idea of how fast the service provided by your ISP is.
__________________

__________________
May you live as long as you wish and love as long as you live.
Robert A. Heinlein
taxlady is offline   Reply With Quote
Old 05-23-2014, 02:52 PM   #52
Wine Guy
 
Steve Kroll's Avatar
 
Join Date: Mar 2011
Location: Twin Cities, Minnesota
Posts: 5,308
Quote:
Originally Posted by taxlady View Post
BakeChef already posted the name of a site that does a ping test. I was wondering if there was a command line prompt to ping DC and tell me how fast the ping was.
The command line prompt is simply PING.

For example, "ping discusscooking.com".

I agree with Frank that pinging a server isn't a very good test. All it really tells you is that there is a server there.

I'm also glad he mentioned that DC uses a CDN, or Content Delivery Network. That can play a big factor in how fast or slow a site is. CDNs essentially duplicate a web site's content (images, etc.) in various locations around the globe. In theory, you are supposed to be fed content by the server closest to your location. Perhaps the one closest to Andy is having some problems. This might also help explain why he was seeing images with red x's, while others were not having any issues.

I work in the IT department of the world's largest real estate network, and we use a CDN to distribute web traffic to our websites. We have millions of visitors to our websites every day, and having the images and what not available in dozens of servers around the world keeps traffic from all going to one single location, which would make things unbearably slow for anyone browsing our sites. The down side is that it sometimes takes a while to replicate the content everywhere, so it can occasionally appear that images are missing.
__________________

__________________
Steve Kroll is offline   Reply With Quote
Old 05-23-2014, 03:46 PM   #53
Certified Pretend Chef
 
Andy M.'s Avatar
 
Join Date: Sep 2004
Location: Massachusetts
Posts: 40,926
Quote:
Originally Posted by Steve Kroll View Post
The command line prompt is simply PING.

For example, "ping discusscooking.com".

I agree with Frank that pinging a server isn't a very good test. All it really tells you is that there is a server there.

I'm also glad he mentioned that DC uses a CDN, or Content Delivery Network. That can play a big factor in how fast or slow a site is. CDNs essentially duplicate a web site's content (images, etc.) in various locations around the globe. In theory, you are supposed to be fed content by the server closest to your location. Perhaps the one closest to Andy is having some problems. This might also help explain why he was seeing images with red x's, while others were not having any issues.

I work in the IT department of the world's largest real estate network, and we use a CDN to distribute web traffic to our websites. We have millions of visitors to our websites every day, and having the images and what not available in dozens of servers around the world keeps traffic from all going to one single location, which would make things unbearably slow for anyone browsing our sites. The down side is that it sometimes takes a while to replicate the content everywhere, so it can occasionally appear that images are missing.

No red x's for me. Just slow.
__________________
"If you want to make an apple pie from scratch, you must first create the universe." -Carl Sagan
Andy M. is online now   Reply With Quote
Old 05-23-2014, 04:00 PM   #54
Chef Extraordinaire
 
taxlady's Avatar
 
Join Date: Sep 2010
Location: near Montreal, Quebec, Canada
Posts: 18,693
Send a message via Skype™ to taxlady
Quote:
Originally Posted by Steve Kroll View Post
The command line prompt is simply PING.

For example, "ping discusscooking.com".

I agree with Frank that pinging a server isn't a very good test. All it really tells you is that there is a server there.

I'm also glad he mentioned that DC uses a CDN, or Content Delivery Network. That can play a big factor in how fast or slow a site is. CDNs essentially duplicate a web site's content (images, etc.) in various locations around the globe. In theory, you are supposed to be fed content by the server closest to your location. Perhaps the one closest to Andy is having some problems. This might also help explain why he was seeing images with red x's, while others were not having any issues.

I work in the IT department of the world's largest real estate network, and we use a CDN to distribute web traffic to our websites. We have millions of visitors to our websites every day, and having the images and what not available in dozens of servers around the world keeps traffic from all going to one single location, which would make things unbearably slow for anyone browsing our sites. The down side is that it sometimes takes a while to replicate the content everywhere, so it can occasionally appear that images are missing.
Well, it also tells me that it isn't really internet traffic between me and DC that is causing any slow downs. I got an average round trip of 38 ms. But, I don't know if that is even relevant if the content is being delivered by a CDN. How would I ping that?
__________________
May you live as long as you wish and love as long as you live.
Robert A. Heinlein
taxlady is offline   Reply With Quote
Old 05-23-2014, 04:55 PM   #55
Wine Guy
 
Steve Kroll's Avatar
 
Join Date: Mar 2011
Location: Twin Cities, Minnesota
Posts: 5,308
Quote:
Originally Posted by taxlady View Post
Well, it also tells me that it isn't really internet traffic between me and DC that is causing any slow downs. I got an average round trip of 38 ms.
We're not talking apples to apples. Ping uses ICMP protocol, which does nothing more than relay simple messages back to the originating address. Websites use the TCP protocol, which has error-checking and congestion control mechanisms. It's much more complex and designed around the guaranteed delivery of data. If you think of a web page as a puzzle made up of many bits of data, TCP basically sends one piece of the puzzle at a time (called a "packet" in internet jargon) - and waits for acknowledgement that each piece was received correctly - until the entire page is completed. If there are transmission errors that cause the data to be resent, or heavy traffic, or a server doesn't receive an acknowledgement from the requestor, it can cause slow downs.

Quote:
Originally Posted by taxlady View Post
But, I don't know if that is even relevant if the content is being delivered by a CDN. How would I ping that?
I have no simple answer here. It depends on how the CDN is set up. In most cases a CDN works through DNS. You send a request to DC for an image and the DNS server (the internet address book) decides which server can best handle the request. Sometimes the decision is based solely on proximity, but can also have other rules. For example, it might have a load balancing mechanism that decides which server has the least amount of traffic and route your request there.
__________________
Steve Kroll is offline   Reply With Quote
Old 05-23-2014, 05:25 PM   #56
Wine Guy
 
Steve Kroll's Avatar
 
Join Date: Mar 2011
Location: Twin Cities, Minnesota
Posts: 5,308
Quote:
Originally Posted by Andy M. View Post
No red x's for me. Just slow.
I was actually referring back to this thread. I'm just wondering aloud if it's another symptom of the same issue.

No Icons, Just Text
__________________
Steve Kroll is offline   Reply With Quote
Old 05-23-2014, 05:43 PM   #57
Chef Extraordinaire
 
taxlady's Avatar
 
Join Date: Sep 2010
Location: near Montreal, Quebec, Canada
Posts: 18,693
Send a message via Skype™ to taxlady
Steve, of course there can be many reasons the site runs slow for some of us. I'll admit that today, it's running fast for me. We were discussing ways of figuring out if it was our ISPs that were causing the problem. I'll run some pings on a day when the site is running slow for me.
__________________
May you live as long as you wish and love as long as you live.
Robert A. Heinlein
taxlady is offline   Reply With Quote
Old 05-23-2014, 07:29 PM   #58
Certified Pretend Chef
 
Andy M.'s Avatar
 
Join Date: Sep 2004
Location: Massachusetts
Posts: 40,926
Quote:
Originally Posted by Steve Kroll View Post
I was actually referring back to this thread. I'm just wondering aloud if it's another symptom of the same issue.

No Icons, Just Text

Oh yeah, that one. That's been fixed for a while.
__________________
"If you want to make an apple pie from scratch, you must first create the universe." -Carl Sagan
Andy M. is online now   Reply With Quote
Old 05-23-2014, 07:54 PM   #59
Proud American
 
Join Date: Aug 2013
Location: Asheville
Posts: 2,142
It is perfect today!

With love,
~Cat
__________________

__________________
CatPat is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



» Discuss Cooking on Facebook

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities


Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 10:46 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.