[Cialug] Troubleshooting high latency/low speed

[Tom Pohl]

Is it virtualized?  Is it possible that other hosts on that same virtual server are starving you out for IO or CPU?

-Tom


On Jul 26, 2010, at 4:46 PM, Matthew Nuzum wrote:

> Hello, I've got a server and accessing it is slow lately (about a week now). Sometimes just slow, other times intolerably slow.
> 
> Ping does not indicate too much prob. Latency is about 70-80ms which is fine. However SSH, HTTP and even HTTPS over a non-standard port all make it clear there is a problem. Can you suggest how to troubleshoot this?
> 
> wget http://www.bearfruit.org/wp-includes/js/jquery/jquery.js
> 100%[===========================================>] 72,194      7.59K/s   in 9.3s    
> 
> 2010-07-26 16:35:53 (7.59 KB/s) - `jquery.js' saved [72194/72194]
> 
> (NOTE that it took 9.3s to download a .js file)
> 
> Also, traceroute shows high latency when I test the server, but my brother tested from ISU and he also noticed the slow speed and he's on ISU's campus (not mediacom):
> 
> traceroute to www.bearfruit.org (69.60.125.106), 30 hops max, 60 byte packets
>  1  buffalo.setup (192.168.1.1)  4.140 ms  7.958 ms  8.432 ms
>  2  10.19.76.1 (10.19.76.1)  16.084 ms  19.137 ms  19.232 ms
>  3  172.30.1.81 (172.30.1.81)  29.518 ms  29.621 ms  29.720 ms
>  4  172.30.1.53 (172.30.1.53)  27.287 ms  29.260 ms  28.953 ms
>  5  12-215-4-22.client.mchsi.com (12.215.4.22)  30.601 ms  229.057 ms  229.443 ms
>  6  cr84.cgcil.ip.att.net (12.122.132.98)  231.008 ms  206.822 ms  332.461 ms
>  7  cr2.cgcil.ip.att.net (12.123.7.250)  332.542 ms  332.699 ms  332.850 ms
>  8  cr1.n54ny.ip.att.net (12.122.1.1)  333.005 ms  203.557 ms  203.937 ms
>  9  n54ny02jt.ip.att.net (12.122.80.225)  201.973 ms  205.819 ms  208.754 ms
> 10  192.205.37.134 (192.205.37.134)  208.838 ms 192.205.36.78 (192.205.36.78)  205.243 ms 192.205.37.134 (192.205.37.134)  208.864 ms
> 11  te0-2-0-4.ccr22.jfk02.atlas.cogentco.com (154.54.1.217)  208.952 ms  209.012 ms te0-2-0-4.ccr21.jfk02.atlas.cogentco.com (154.54.2.185)  430.110 ms
> 12  te0-0-0-2.ccr21.dca01.atlas.cogentco.com (154.54.25.238)  231.746 ms te0-1-0-7.ccr21.dca01.atlas.cogentco.com (154.54.26.6)  232.186 ms te0-2-0-7.ccr21.dca01.atlas.cogentco.com (154.54.41.1)  232.564 ms
> 13  te3-8.ccr02.atl01.atlas.cogentco.com (154.54.1.33)  232.975 ms te9-2.ccr01.atl01.atlas.cogentco.com (154.54.24.154)  233.059 ms te7-2.ccr01.atl01.atlas.cogentco.com (154.54.28.214)  227.670 ms
> 14  te3-4.ccr02.mia01.atlas.cogentco.com (154.54.3.26)  238.692 ms te3-1.ccr01.mia01.atlas.cogentco.com (154.54.30.34)  235.215 ms te3-1.ccr02.mia01.atlas.cogentco.com (154.54.26.10)  238.495 ms
> 15  vl3512.na21.b015452-0.mia01.atlas.cogentco.com (66.250.14.182)  235.593 ms  235.679 ms  236.002 ms
> 16  38.104.90.190 (38.104.90.190)  236.089 ms  237.478 ms  236.939 ms
> 17  233-160-111-65.serverpronto.com (65.111.160.233)  237.884 ms  231.885 ms  228.001 ms
> 18  hosts.bearfruit.des-moines.ia.us (69.60.125.106)  232.530 ms  232.364 ms  232.571 ms
> 
> -- 
> Matthew Nuzum
> newz2000 on freenode, skype, linkedin, identi.ca and twitter
> 
> "Never stop learning" –Robert Nuzum (My dad)
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