deblin
Dark Side of the Moon
Premium,MVM
join:2001-09-01
Middletown, DE
| reply to NormanS
Re: [Home Network] latency / lag on DSL vs. cable
Upstream sync rate on DSL results in marginally lower RTT pings to the POP. I think going from 384k upstream to 608k upstream, I saw a drop in GW ping from about 11-12ms to 7-8ms. Not a huge difference, that, but of note.
Also, in my experience, DSL pings are much more consistent and stable. Cable tends to fluctuate quite a bit, at least it has in areas I've had Cable. This, as I said, can definitely vary by Comcast market.
Here's the ping to my gateway on my parents' Comcast connection (which is actually very good):
Pinging 71.200.176.1 with 32 bytes of data:
Reply from 71.200.176.1: bytes=32 time=9ms TTL=254
Reply from 71.200.176.1: bytes=32 time=8ms TTL=254
Reply from 71.200.176.1: bytes=32 time=6ms TTL=254
Reply from 71.200.176.1: bytes=32 time=7ms TTL=254
Reply from 71.200.176.1: bytes=32 time=9ms TTL=254
Reply from 71.200.176.1: bytes=32 time=7ms TTL=254
Reply from 71.200.176.1: bytes=32 time=10ms TTL=254
Reply from 71.200.176.1: bytes=32 time=7ms TTL=254
Reply from 71.200.176.1: bytes=32 time=7ms TTL=254
Reply from 71.200.176.1: bytes=32 time=7ms TTL=254
Reply from 71.200.176.1: bytes=32 time=11ms TTL=254
Reply from 71.200.176.1: bytes=32 time=7ms TTL=254
Reply from 71.200.176.1: bytes=32 time=8ms TTL=254
Reply from 71.200.176.1: bytes=32 time=7ms TTL=254
Reply from 71.200.176.1: bytes=32 time=11ms TTL=254
Reply from 71.200.176.1: bytes=32 time=6ms TTL=254
Reply from 71.200.176.1: bytes=32 time=15ms TTL=254
Reply from 71.200.176.1: bytes=32 time=8ms TTL=254
Reply from 71.200.176.1: bytes=32 time=6ms TTL=254
Reply from 71.200.176.1: bytes=32 time=7ms TTL=254
Ping statistics for 71.200.176.1:
Packets: Sent = 20, Received = 20, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 6ms, Maximum = 15ms, Average = 8ms
So it's 6-8ms most of the time, but with spikes to 10+ a few times (even 15). This is actually very good, I've seen it much more jittery. On DSL, though, when I'd ping my gateway, I'd see 10ms for every reply with a std deviation of less than 0.5ms. 
--
Hello...is there anybody in there? |
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NormanS
Premium,MVM
join:2001-02-14
San Jose, CA
 ·Pacific Bell - SBC
| This is what I see...
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Norman
~Oh Lord, why have you come
~To Konnyu, with the Lion and the Drum |
|
en102
Canadian, eh?
join:2001-01-26
Valencia, CA
 ·RoadRunner Cable
·DSL EXTREME
| Some of that is due to location (i.e. San Jose to San Jose trace to yahoo.com)
L.A. to San Jose is a little farther
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Canada = Hollywood North |
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NormanS
Premium,MVM
join:2001-02-14
San Jose, CA
·Pacific Bell - SBC
| Yeah, but how far are you from your DSLAM? It is the latency to the gateway router which is what I am looking at. My DSLAM is 9,156 out. I'd be curious to see the latency on a DSL line at 15,000 feet; especially if they were on the Fast data path.
--
Norman
~Oh Lord, why have you come
~To Konnyu, with the Lion and the Drum |
|
en102
Canadian, eh?
join:2001-01-26
Valencia, CA
·RoadRunner Cable
·DSL EXTREME
| said by NormanS  :Yeah, but how far are you from your DSLAM? It is the latency to the gateway router which is what I am looking at. My DSLAM is 9,156 out. I'd be curious to see the latency on a DSL line at 15,000 feet; especially if they were on the Fast data path. According to AT&T techs, I'm at ~12,000', and I'm on fastpath 3008/512kbps (which they no longer offer for me).
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Canada = Hollywood North |
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