bought 2 servers years ago. both with same hardware. both on 100mbit connections.
both in dallas 4.

I'm wondering why one server is 2x faster than the other on speed tests at Speakeasy.net. One gets 15000 kbps, and the other gets 7500 kbps.
The only speedtest where both boxes get 15000+ is when doing a Texas-based speed test.
There are no latency issues on the slower box. As far as i can tell, they are configured the same too.

when transferring between my 2 boxes, I get 5-7 MBytes/s both ways. pretty much maxed out, and as fast as a Celeron will handle.

The speed diff is when I download data from the www to my boxes.
The faster box will get 400K/s per thread.
The slower box will get only 100K/s per thread.
both downloading the same file.


My faster box is on:
Switch: bl21a.01.dllstx4
Switch IP: 10.0.4.88
Uplink Router: car05.dllstx4


My slower box is on:
Switch: cp29a.01.dllstx4
Switch IP: 10.0.4.113
Uplink Router: car04.dllstx4


i wonder why there is a 2x+ speed difference... Router needs optimization??

Hi -

It could be the way the packets are routed from the speedtest server to the servers in our datacenter. If the servers are in different supernets, then they might be routing differently. What are the IP's you're using?

Also - there's a speedtest on our website now at http://www.theplanet.com/networktests/speedtest.html. Give that a try and see if your results are that different.

unsurprisingly, the planet speedtest maxes out both of my boxes. 5MB/s in and out on both boxes



but this is the bizarre thing I was talking about. and it's not just NY. it's Washington, SF, chicago too

Speedtest is to dns.nyc1.speakeasy.net:



It's as though my slower box is on a 10mbit. My fast box just crushes this one:




and here's the traceroute to the NY speedtest above, if it means anything... they look pretty similar to me?


1 <1 ms <1 ms <1 ms my.slow.box.static.theplanet.com
2 <1 ms <1 ms <1 ms gi3-8.dsr01.dllstx4.theplanet.com [67.19.255.13]
3 1 ms <1 ms <1 ms po41.dsr01.dllstx3.theplanet.com [70.87.253.73]
4 <1 ms <1 ms <1 ms et3-1.ibr04.dllstx3.theplanet.com [70.87.253.9]
5 <1 ms <1 ms <1 ms te-3-1.car4.Dallas1.Level3.net [4.71.122.1]
6 5 ms <1 ms <1 ms vlan99.csw4.Dallas1.Level3.net [4.68.19.254]
7 7 ms 1 ms 1 ms ae-92-92.ebr2.Dallas1.Level3.net [4.69.136.149]
8 40 ms 36 ms 35 ms ae-6.ebr3.NewYork1.Level3.net [4.69.137.122]
9 40 ms 35 ms 35 ms ae-73-73.csw2.NewYork1.Level3.net [4.69.134.102]
10 35 ms 36 ms 36 ms ge-9-0.ipcolo2.NewYork1.Level3.net [4.68.97.46]
11 52 ms 38 ms 38 ms 166.90.136.34
12 36 ms 36 ms 36 ms dns.nyc1.speakeasy.net [216.254.95.2]

Trace complete.

1 <1 ms <1 ms <1 ms my.fast.box.static.theplanet.com
2 <1 ms <1 ms <1 ms gi4-1.dsr01.dllstx4.theplanet.com [67.19.255.17]
3 <1 ms <1 ms <1 ms po41.dsr01.dllstx3.theplanet.com [70.87.253.73]
4 <1 ms <1 ms <1 ms et5-1.ibr04.dllstx3.theplanet.com [70.87.253.13]
5 <1 ms <1 ms <1 ms te-3-1.car4.Dallas1.Level3.net [4.71.122.1]
6 8 ms 1 ms 1 ms vlan69.csw1.Dallas1.Level3.net [4.68.19.62]
7 9 ms 1 ms 1 ms ae-62-62.ebr2.Dallas1.Level3.net [4.69.136.137]
8 45 ms 35 ms 36 ms ae-6.ebr3.NewYork1.Level3.net [4.69.137.122]
9 40 ms 36 ms 36 ms ae-73-73.csw2.NewYork1.Level3.net [4.69.134.102]
10 36 ms 36 ms 35 ms ge-9-0.ipcolo2.NewYork1.Level3.net [4.68.97.46]
11 38 ms 38 ms 38 ms 166.90.136.34
12 36 ms 36 ms 36 ms dns.nyc1.speakeasy.net [216.254.95.2]

Right - the return path is the same, which is why the upload speed is relatively close - but the return path (from the speedtest server) is the one I'm most interested in. Unfortunately they don't provide you with a way to test that.