Slooooow (Firefox, pages with LaTeX)

[Fredrik]

Some pages are so slow for me now that they're essentially unusable. For example this one:
https://www.physicsforums.com/threa...how-do-we-exactly-define.685722/#post-4349806

I've been having a lot of problems with the computer that I'm on now, so at first I thought it had something to do with that, but I recently noticed that it's frustratingly slow on another computer. So it's probably not just this computer. Anyone else find it difficult to view that thread?

It takes about 2.5 minutes for the LaTeX in post #12 to appear. I also failed to copy the link above (from the popup that appears when I click the #12 in the thread) the first two times I tried. Something related to the slowness makes it look like you've copied it when you really haven't.

 

[Greg Bernhardt]

Yeah there is a lot of tex to process in that thread. I know the recent beta of MathJax is based around performance boosts so hopefully when that is released it will help. Make sure you are using the latest browser of Firefox or Chrome. It's all javascript processing.

 

[StevieTNZ]

Yes, same for me.

I've noticed pages stop loading when physicsforums-bernhardtmediall.netdna-ssl.com is being fetched, at times, also in Firefox.

 

[jim hardy]

I have ongoing issue with post and preview.

Trouble is intermittent.

I click post , screen appears to acknowledge as if it were going to post , but pops back to same screen asking do i want to post or preview .

I thouhgt it was my ISP but other pages don't have the trouble

I get frustrated and click post about thirty times fast as i can
and it usually posts three of four times

sometimes if i log out and log back in it'll post

firefox, shutters7 , isp is centurylink

 

[dlgoff]

I'm using Firefox 28.0, Windows 7 Pro., isp = centurylink and loading is screaming fast here in Kansas.

 

[jim hardy]

I'm using Firefox 28.0, Windows 7 Pro., isp = centurylink and loading is screaming fast here in Kansas.

Probably my local isp then - speedtest shows only 3 meg here
vs 40 meg at kids' house in Virginia

thanks Don

 

[jim hardy]

Doing it again

i can log in. log out, view pages, edit
but cannot post or preview

 

[jim hardy]

Doing it again

i can log in. log out, view pages, edit
but cannot post or preview

 

[jim hardy]

one immediately above took ten minutes and a hundred tries, a logout and login, still more tries
but this one went fine

time for more virus scans i guess

 

[dlgoff]

Which Antivirus Program do you use?

I personally like and use Microsoft Security Essentials.

 

[Fredrik]

Tried it on another computer. 21 seconds in Firefox, 17 seconds in Chrome. So there's an enormous difference between the computers, and a small difference between the browsers..

 

[jim hardy]

Which Antivirus Program do you use?

I personally like and use Microsoft Security Essentials.

I too use Security Essentials
and scan with malwarebytes weekly. It occasionally catches one that got by microsoft.

 

[Greg Bernhardt]

Tried it on another computer. 21 seconds in Firefox, 17 seconds in Chrome. So there's an enormous difference between the computers, and a small difference between the browsers..

Takes me about 10 seconds

 

[jim hardy]

happening again
cannot post

could it be related to those drop-downs? When i cleared "forums" it posted, but don't know if it's coincidence
will pay attention

 

[Greg Bernhardt]

happening again
cannot post

could it be related to those drop-downs? When i cleared "forums" it posted, but don't know if it's coincidence
will pay attention

Looking at your post time you're likely posting while the database is being backed up. For roughly 5min the site is pretty jammed up.

 

[jim hardy]

Again at 12:15 ET , food thread
and this one too

when it finally took it did it in triplicate

 

[Greg Bernhardt]

Again at 12:15 ET , food thread

Can you post a ping and traceroute?

 

[jim hardy]

dont know how to copy & paste result
round trip millisec min 108 max 301 avg 172

aha there's an edit button...
-----------------------------------------------------------------------------------------------------------------

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Users\old jim>ping physicsforums.com

Pinging physicsforums.com [74.86.200.109] with 32 bytes of data:
Reply from 74.86.200.109: bytes=32 time=300ms TTL=50
Reply from 74.86.200.109: bytes=32 time=104ms TTL=50
Reply from 74.86.200.109: bytes=32 time=84ms TTL=50
Reply from 74.86.200.109: bytes=32 time=157ms TTL=50

of course it's working now, will capture one when it's acting up

Ping statistics for 74.86.200.109:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 84ms, Maximum = 300ms, Average = 161ms

C:\Users\old jim>

 

[Greg Bernhardt]

Do a traceroute too, it might be a CDN hanging up

 

[jim hardy]

Well today microsoft tells me traceroute is not a recognized command.
Before Windows you could count on a computer to do the same thing twice.

And the "edit" button no longer appears on cmd screen but ping result is similar
88 min, 283 max, 182 avg

and it's doing it again

 

[jim hardy]

Well today microsoft tells me traceroute is not a recognized command.
Before Windows you could count on a computer to do the same thing twice.

And the "edit" button no longer appears on cmd screen but ping result is similar
88 min, 283 max, 182 avg

and it's doing it again

edit duplicated again too

 

[Greg Bernhardt]

Well today microsoft tells me traceroute is not a recognized command.

sorry, it's tracert

 

[jim hardy]

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Users\old jim>ping physicsforums.com

Pinging physicsforums.com [74.86.200.109] with 32 bytes of data:
Reply from 74.86.200.109: bytes=32 time=300ms TTL=50
Reply from 74.86.200.109: bytes=32 time=104ms TTL=50
Reply from 74.86.200.109: bytes=32 time=84ms TTL=50
Reply from 74.86.200.109: bytes=32 time=157ms TTL=50

Ping statistics for 74.86.200.109:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 84ms, Maximum = 300ms, Average = 161ms

C:\Users\old jim>
C:\Users\old jim>
C:\Users\old jim>tracerte physicsforums.com
'tracerte' is not recognized as an internal or external command,
operable program or batch file.

C:\Users\old jim>
C:\Users\old jim>traceroute physicsforums.com
'traceroute' is not recognized as an internal or external command,
operable program or batch file.

C:\Users\old jim>
C:\Users\old jim>man traceroute physicsforums.com
'man' is not recognized as an internal or external command,
operable program or batch file.

C:\Users\old jim>traceroute
'traceroute' is not recognized as an internal or external command,
operable program or batch file.

C:\Users\old jim>

 

[Greg Bernhardt]

tracerte' is not recognized as an internal or external command,
operable program or batch file.

No "e" at the end

 

[jim hardy]

Well if i learn something every day, i may eventually know something !

this looks promising

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Users\old jim>tracert physicsforums.com

Tracing route to physicsforums.com [74.86.200.109]
over a maximum of 30 hops:

1 11 ms 4 ms 5 ms 192.168.0.1
2 6 ms 3 ms 2 ms dslrouter.westell.com [192.168.1.1]
3 44 ms 30 ms 71 ms 184-156-226-1.dyn.centurytel.net [184.156.226.1]

4 31 ms 28 ms 26 ms ce.mh.centurytel.net [209.142.143.5]
5 166 ms 86 ms 39 ms bb-nlrkargp-jx9-01-ge-0-0-9-205.core.centurytel.
net [208.110.249.81]
6 50 ms 48 ms 67 ms bb-kscbmonr-jx9-02-xe-11-1-0.core.centurytel.net
[206.51.69.18]
7 87 ms 207 ms 93 ms bb-kscbmonr-jx9-01-ae0.core.centurytel.net [206.
51.69.5]
8 99 ms 157 ms 144 ms bb-dllstx37-jx9-02-xe-11-1-0.core.centurytel.net
[206.51.69.25]
9 * * * Request timed out.
10 161 ms 210 ms 97 ms dap-brdr-03.inet.qwest.net [67.14.2.89]
11 * * * Request timed out.
12 * * * Request timed out.
13 * * * Request timed out.
14 141 ms 208 ms 81 ms 4.59.36.94
15 106 ms 94 ms 118 ms ae1.dar02.sr01.dal01.networklayer.com [173.192.1
8.213]
16 246 ms 92 ms 211 ms po2.fcr03.sr04.dal01.networklayer.com [66.228.11
8.190]
17 109 ms 305 ms 83 ms physicsforums.com [74.86.200.109]

Trace complete.

C:\Users\old jim>

 

[jim hardy]

Thanks Greg

 

[Greg Bernhardt]

8 99 ms 157 ms 144 ms bb-dllstx37-jx9-02-xe-11-1-0.core.centurytel.net
[206.51.69.25]
9 * * * Request timed out.
10 161 ms 210 ms 97 ms dap-brdr-03.inet.qwest.net [67.14.2.89]
11 * * * Request timed out.
12 * * * Request timed out.
13 * * * Request timed out.

This appears to be a problem with your ISP. I would contact them.

 

[jim hardy]

Another tracert

would my guess that it's Centurytel be right?

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Users\old jim>tracert physicsforums.com

Tracing route to physicsforums.com [74.86.200.109]
over a maximum of 30 hops:

1 7 ms 3 ms 3 ms 192.168.0.1
2 8 ms 3 ms 3 ms dslrouter.westell.com [192.168.1.1]
3 40 ms 106 ms 28 ms 184-156-226-1.dyn.centurytel.net [184.156.226.1]

4 31 ms 28 ms 29 ms ce.mh.centurytel.net [209.142.143.5]
5 82 ms 204 ms 100 ms bb-nlrkargp-jx9-01-ge-0-0-9-205.core.centurytel.
net [208.110.249.81]
6 224 ms 97 ms 613 ms bb-kscbmonr-jx9-02-xe-11-1-0.core.centurytel.net
[206.51.69.18]
7 53 ms 50 ms 122 ms bb-kscbmonr-jx9-01-ae0.core.centurytel.net [206.
51.69.5]
8 250 ms 97 ms 208 ms bb-dllstx37-jx9-02-xe-11-1-0.core.centurytel.net
[206.51.69.25]
9 * * * Request timed out.
10 91 ms 100 ms 204 ms dap-brdr-03.inet.qwest.net [67.14.2.89]
11 * * * Request timed out.
12 299 ms * 169 ms ae-3-80.edge5.Dallas3.Level3.net [4.69.145.145]

13 * 212 ms * ae-3-80.edge5.Dallas3.Level3.net [4.69.145.145]

14 200 ms 103 ms 204 ms 4.59.36.94
15 225 ms 97 ms 211 ms ae1.dar02.sr01.dal01.networklayer.com [173.192.1
8.213]
16 84 ms 140 ms 204 ms po2.fcr03.sr04.dal01.networklayer.com [66.228.11
8.190]
17 87 ms 134 ms 184 ms physicsforums.com [74.86.200.109]

Trace complete.

C:\Users\old jim>

thanks again for your patience.

ps did it again on this post

 

[jim hardy]

Sorry, our posts crossed in the e-wind.

Thanks Greg for the lesson...

will do

old jim

 

[Greg Bernhardt]

We're on MathJax 2.5 Beta. How is the speed now?

 

[Fredrik]

We're on MathJax 2.5 Beta. How is the speed now?

I did a test a few hours ago. The results were 72 s in Firefox, 24 s in Chrome. Now it's...uh...apparently there are two answers for each browser. In Firefox, the LaTeX (in post #12 of the thread linked to in post #1 of this thread) shows up after 8 s. The font is different from before. Then about 29 s later, the font changes back to the old font. In Chrome, the first font appears after less than 3 s, and the second font about 29 s after that. The second font doesn't look exactly the same in the two browsers. The symbols are very slightly thinner in Chrome, but I don't see any other differences.

This is certainly a huge improvement.

 

[Greg Bernhardt]

The font is different from before. Then about 29 s later, the font changes back to the old font.

I think this is a new feature called "Fast Preview". It is still to be determined if it's helpful or now for slow loaders.

 

[jim hardy]

No troubles last few days

something has much improved somewhere

thanks !

 

[Mark44]

Web pages on this site load pretty fast for me (Win 7 with IE 11 and a generally fast connection), but in the past (> 2 years ago), some pages that were Tex-heavy would load very slowly. For this reason I use Tex judiciously, mostly for integrals and matrices, and sometimes for more complicated fractions. If all I need is exponents or subscripts, I mostly use BBcode.

 

[jim hardy]

ignoring buttons was back again

i downloaded a program winmtr that starts a loop of tracerts to whatever site you tell it
and gives a stream of results without further typing.

looks to me like the trouble is internal to my ISp, as you said last week

winmtr automates beating on the keyboard.
and seems handy for waking them up.

Great stress reliever !





|------------------------------------------------------------------------------------------|
| WinMTR statistics |
| Host - % | Sent | Recv | Best | Avrg | Wrst | Last |
|------------------------------------------------|------|------|------|------|------|------|
| 192.168.0.1 - 0 | 15 | 15 | 1 | 3 | 4 | 3 |
| dslrouter.westell.com - 0 | 15 | 15 | 3 | 3 | 6 | 3 |
| 162.104.100.1 - 0 | 15 | 15 | 25 | 29 | 35 | 35 |
| 206.51.93.228 - 0 | 15 | 15 | 22 | 29 | 40 | 27 |
| 206.51.93.224 - 0 | 15 | 15 | 31 | 38 | 65 | 42 |
|bb-kscbmonr-jx9-02-xe-11-1-0.core.centurytel.net - 0 | 15 | 15 | 41 | 46 | 65 | 45 |
|bb-kscbmonr-jx9-01-ae0.core.centurytel.net - 0 | 15 | 15 | 43 | 51 | 58 | 55 |
|bb-dllstx37-jx9-02-xe-11-1-0.core.centurytel.net - 0 | 15 | 15 | 49 | 57 | 73 | 53 |
| No response from host - 100 | 3 | 0 | 0 | 0 | 0 | 0 |
| dap-brdr-03.inet.qwest.net - 0 | 15 | 15 | 54 | 62 | 103 | 60 |
| No response from host - 100 | 3 | 0 | 0 | 0 | 0 | 0 |
| No response from host - 100 | 3 | 0 | 0 | 0 | 0 | 0 |
| No response from host - 100 | 3 | 0 | 0 | 0 | 0 | 0 |
| 4.59.36.94 - 0 | 15 | 15 | 56 | 62 | 78 | 56 |
| ae1.dar01.sr01.dal01.networklayer.com - 0 | 15 | 15 | 54 | 58 | 76 | 56 |
| po1.fcr03.sr04.dal01.networklayer.com - 0 | 15 | 15 | 60 | 66 | 78 | 60 |
| physicsforums.com - 0 | 15 | 15 | 53 | 60 | 82 | 56 |
|________________________________________________|______|______|______|______|______|______|
WinMTR v0.92 GPL V2 by Appnor MSP - Fully Managed Hosting & Cloud Provider


Take that, varlets !

old jim