Forum Issues?

dant

dant

The Living Force
Is it me, or is the forum very sluggish today?
It takes a long time for the page to load.
 
What I do not know if the system is overloaded, has run
out of memory and using swap, is under attack, ISP routing
delays, Bandwidth throttling or something else I cannot think
of at the moment.

I used 'mtr' and noticed there is "above normal" packet
loss between my computer and cassiopaea.org, high
loss is 95% @ 149.6.24.38 just before cassiopaea.org
so something is going on.

For additional info:

# Whois 149.6.24.38

[Querying whois.arin.net]
[Redirected to rwhois.cogentco.com:4321]
[Querying rwhois.cogentco.com]
[rwhois.cogentco.com]
%rwhois V-1.5:0010b0:00 rwhois.cogentco.com

149.6.24.38
network:ID:NET4-950618241E
network:Network-Name:NET4-950618241E
network:IP-Network:149.6.24.36/30
network:Postal-Code:60604
network:State:IL
network:City:Chicago
network:Street-Address:141 W Jackson Blvd Ste. 1125
network:Org-Name:FDC Servers.NET LLC
network:Tech-Contact:ZC108-ARIN
network:Updated:2012-04-02 16:12:21
network:Updated-by:Bill Garrison
 
I haven't noticed any slowness or other issues today so far, but I'm also getting 90%+ packet loss on:
zlin-gw.ip4.tinet.net
50.7.255.245
from the mtr linux utility.
 
What is interesting is that you are getting 10% throughput, perhaps
enough to make the transmission delay/page loading unnoticeable.
Since I am getting 5% throughput, it is very noticeable... and page
loading delay is in many seconds to several minutes...

Try running mtr cassiopaea.org (in monitor mode) and watch for
loss at 95% and holding then try to refresh the page at that
point - you might notice a page loading delay? Of course, from
your IP address, your route is different and your delay may not
be holding as long as mine, which is consistent at ~95%.
 
Doing another run both those nodes were around 95% and there was no delay in refreshing.
 
Ok.... I guess perhaps mtr does not show the underlying problem...
I still get horrendous page loading and it is very slow. I will just
try again another time/day and see if the problem somehow goes away. :/
 
I'm getting 0% packet loss on both those nodes now. I don't think I was getting any packet loss on cassiopaea.org earlier, though, and I think that would be the most relevant benchmark. Not sure why you're having the slowness, though.
 
Actually, I noticed that cassiopaea.org/forum has been loading extremely fast since maintenance mode is off again. It's on a new server now?
 
All these problems were probably related to our move to a new server.

This one is even more powerful than the old one, and the old one wasn't exactly a slacker...

:thup:
 
Thanks for all the work you do to keep this forum in good shape. I am aware (and I think often of this) of all the work that implies to keep a forum like this one in good shape. And it works so well. You are doing an extraordinary job.
 
loreta said:
Thanks for all the work you do to keep this forum in good shape. I am aware (and I think often of this) of all the work that implies to keep a forum like this one in good shape. And it works so well. You are doing an extraordinary job.
Click to expand...

Agreed. Thanks Mr. Scott! :D
 
I'm glad the forum's back. It seems until I dumped my internet cache just to be sure, the message about "moving house" kept coming up. So the forum was back for a while before I realized. :)
 
Maybe my question is not appropriate due to business secrets but does the move also serves anonymisation purposes, or is it technical only? I mean, the whole witch-hunting thing in recent times, you know.
 
SeekinTruth said:
I'm glad the forum's back. It seems until I dumped my internet cache just to be sure, the message about "moving house" kept coming up. So the forum was back for a while before I realized. :)
Click to expand...

Yeah, there's the browser cache, and then there is the browser's caching of DNS lookups (i.e. "cassiopaea.org = 193.107.86.210" instead of the old IP address), and THEN your OS may do some DNS lookup caching, as well.

The switchover actually took a few hours from here, which is abnormally fast - but then I used all the tricks to make sure that I was getting the new server's version of the site.

All this caching has the added benefit that it gives a bit of extra time to fix things that are broken before the whole world sees the site. ;)
 
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