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Slooooow (Firefox, pages with LaTeX)

  1. Jan 18, 2015 #1

    Fredrik

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    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.
     
    Last edited: Jan 18, 2015
  2. jcsd
  3. Jan 18, 2015 #2
    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.
     
  4. Jan 18, 2015 #3
    Yes, same for me.

    I've noticed pages stop loading when physicsforums-bernhardtmediall.netdna-ssl.com is being fetched, at times, also in Firefox.
     
  5. Jan 18, 2015 #4

    jim hardy

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    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 dont 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
     
  6. Jan 18, 2015 #5

    dlgoff

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    I'm using Firefox 28.0, Windows 7 Pro., isp = centurylink and loading is screaming fast here in Kansas. :olduhh:
     
  7. Jan 18, 2015 #6

    jim hardy

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

    thanks Don
     
  8. Jan 18, 2015 #7

    jim hardy

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    Doing it again

    i can log in. log out, view pages, edit
    but cannot post or preview
     
  9. Jan 18, 2015 #8

    jim hardy

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    Doing it again

    i can log in. log out, view pages, edit
    but cannot post or preview
     
  10. Jan 18, 2015 #9

    jim hardy

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    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
     
  11. Jan 19, 2015 #10

    dlgoff

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  12. Jan 19, 2015 #11

    Fredrik

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    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..
     
  13. Jan 19, 2015 #12

    jim hardy

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    I too use Security Essentials
    and scan with malwarebytes weekly. It occasionally catches one that got by microsoft.
     
  14. Jan 19, 2015 #13
    Takes me about 10 seconds
     
  15. Jan 20, 2015 #14

    jim hardy

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    happening again
    cannot post

    could it be related to those drop-downs? When i cleared "forums" it posted, but dont know if it's coincidence
    will pay attention
     
  16. Jan 20, 2015 #15
    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.
     
  17. Jan 21, 2015 #16

    jim hardy

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

    when it finally took it did it in triplicate
     
  18. Jan 21, 2015 #17
    Can you post a ping and traceroute?
     
  19. Jan 21, 2015 #18

    jim hardy

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    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>
     
  20. Jan 21, 2015 #19
    Do a traceroute too, it might be a CDN hanging up
     
  21. Jan 21, 2015 #20

    jim hardy

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    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
     
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