Hispanic
join:2000-01-22
Hoboken, NJ
| reply to Hispanic
Re: Nighttime slowdown again
Omg I had to stop the test 64 short because it was downloading at a measley 128KB/sec. Something is seriously wrong. |
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Hispanic
join:2000-01-22
Hoboken, NJ | reply to Hispanic
My speeds are ultra bad right now. Check out my speed test. I did it on two different computers and while disconnecting every other computer.
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deblin
Dark Side of the Moon
Premium,MVM
join:2001-09-01
Middletown, DE
| reply to Hispanic
Here's the throughput graph for your capture. Yikes! |
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Hispanic
join:2000-01-22
Hoboken, NJ
1 edit | reply to Hispanic
here is another speedtest
So is this a Verizon Fios network issue?
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deblin
Dark Side of the Moon
Premium,MVM
join:2001-09-01
Middletown, DE
| reply to Hispanic
The only thing I see in the trace is that the receive window is shrinking as if in response to packet loss. But I don't see any duplicate ACKs or noted retransmissions, which is odd.
I do see the checksums are wrong, but that's usually just because TCP checksumming was offloaded (not sure if Windows does this or not), which I've seen on older Realtek cards.
Out of curiosity, what if anything does this web site report for you:
»netalyzr.icsi.berkeley.edu/
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He who is not contented with what he has, would not be contented with what he would like to have. -Socrates |
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deblin
Dark Side of the Moon
Premium,MVM
join:2001-09-01
Middletown, DE
| reply to Hispanic
Another thing. If you're willing, I can put a test file up on my web server (on a 25/15 FiOS connection) and let you grab that, and capture it from this side to see if I can find any anomalies that show up from the server side.
If you want to try that, shoot me an IM with your IP so I can filter the PCAP accordingly and I'll IM you back the url to snag.
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He who is not contented with what he has, would not be contented with what he would like to have. -Socrates |
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Hispanic
join:2000-01-22
Hoboken, NJ
| Network buffer measurements: Uplink 68 ms, Downlink 2100 ms
We estimate your uplink as having 68 msec of buffering. This level may serve well for maximizing speed while minimizing the impact of large transfers on other traffic. We estimate your downlink as having 2100 msec of buffering. This is quite high, and you may experience substantial disruption to your network performance when performing interactive tasks such as web-surfing while simultaneously conducting large downloads. With such a buffer, real-time applications such as games or audio chat can work quite poorly when conducting large downloads at the same time.
Network bandwidth measurements: Upload 16 Mbit/sec, Download 1.4 Mbit/sec
Your Uplink: We measured your uplink's sending bandwidth at 16 Mbit/sec. This level of bandwidth works well for many users. Your Downlink: We measured your downlink's receiving bandwidth at 1.4 Mbit/sec. This level of bandwidth works well for many users
Minor Aberrations
•Network packet buffering may be excessive
•Your computer's clock is slightly slow
Here are some of the results of the test. I will pm you with my ip. |
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Hispanic
join:2000-01-22
Hoboken, NJ | reply to Hispanic
Now my speeds seem to be back to normal.. WTF???
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deblin
Dark Side of the Moon
Premium,MVM
join:2001-09-01
Middletown, DE
| Odd, the throughput graph wireshark is generating for your connection to me has some stray data points up so high that the real data all shows as points right near "0". :/
Even tcptrace's generated throughput graph via xplot looks funky.
But you did say the speeds were closer to 20 Mbit right?
I'd definitely say the next time the slow downs crop up, drop me an IM and I'll put that test file back in place and you can test again.
It could be that the problem lies on your route to the internet at large, but the path it takes to me is different and not subject to the problem. If we can determine that, it'd rule out your local equipment and ONT I'd think.
From your IM, I see that you're on the 96/8 network. Have you tried releasing/renewing your IP until you land on a different IP block?
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He who is not contented with what he has, would not be contented with what he would like to have. -Socrates |
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deblin
Dark Side of the Moon
Premium,MVM
join:2001-09-01
Middletown, DE
| reply to Hispanic
Actiontec Time Sequence Graph (TSG) | 
D-Link TSG |
Compare the two sequence graphs you see attached.
Ideally, the sequence graph should be a perfectly straight, continuous line at ~a 45 degree angle. Note that the actiontec graph is just this - after the initial TCP window ramp.
Then look at the dlink image. See how it's wavy and sort of "squiggly"? This indicates some sort of RTT delay, be it packet queuing, packet loss causing retransmissions, etc.
Bottom line, the actiontec graph looks healthy, the dlink looks quite unhealthy. Even when you were pulling ~20Mbit/s from my with the dlink, it's still erratic and the reason it probably didn't affect things as much is because the latency between our two hosts is probably quite low.
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He who is not contented with what he has, would not be contented with what he would like to have. -Socrates |
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Hispanic
join:2000-01-22
Hoboken, NJ | Wow it looks like my dgl-4500 has forsakened me! darn u dlink to hell. I was on the new 1.21beta firmware. I downgraded back to 1.20 to see if it fixes things. |
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deblin
Dark Side of the Moon
Premium,MVM
join:2001-09-01
Middletown, DE
| Heh, bummer. It's still possible something else is going on. In particular, it's strange that the router would only do this at night and for short periods of time...
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He who is not contented with what he has, would not be contented with what he would like to have. -Socrates |
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guppy_fish
Premium
join:2003-12-09
Lakeland, FL | reply to Hispanic
For the OP, any chance you have parental controls on for a time slot? ( or what ever the router has for traffic shaping ) ... since its always the same time and you now know its your router ... |
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Hispanic
join:2000-01-22
Hoboken, NJ
1 edit | well, i'm not 100% sure it is the router but it very well could be. No, i don't have any traffic shaping policies enabled on the router. I actually placed my dlink back on the network and downgraded the firmware back to 1.20. So far the speeds are good again. I will keep monitoring. As soon as I get the slowdown again, I am going to immediately put the actiontech back on which will confirm the bad router.
The slowdown seemed to always occur between 10pm and 1am but tonight it occured earlier than normal around 7pm.
Deblin, thank for helping me. I will keep everyone posted. |
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N O Y B
St. John 3.16
join:2005-12-15
Forest Grove, OR
| reply to birdfeedr
Entire capture does not have to be saved.
Also rather than save, export just the Packet summary line and Packet details, and do not include the packet bytes etc.
Also use a capture filter rather than display filter.
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Be a Good Netizen - Read, Know & Complain About Overly Restrictive Tyrannical ISP ToS & AUP »comcast.net/terms/ »verizon.net/policies/
Say Thanks with a Tool Points Donation |
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jimboe
join:2000-08-14
New York | reply to Hispanic
go to your nieghbor's during the slowdown and speedtest their FiOS 20/20 connection... see if they're suffering too..
..then change your router (borrow one from someone to test....) |
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birdfeedr
Premium,MVM
join:2001-08-11
Warwick, RI | reply to N O Y B
Good things to know. I'm only a very occasional wireshark user.
Thanks. |
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Lee GWB
Yaco
Premium
join:2001-10-13
Allendale, NJ | reply to deblin
That was my thought. Something maybe phoning home or Parental controls |
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Hispanic
join:2000-01-22
Hoboken, NJ
1 edit | Well i'm getting then notorious slowdown again and this time it is not the router. I switched back to the actiontech and I only have one pc hard wired to it and I was still getting slow speeds.. what the heck. And my pings are high too.
My speeds are like a game during this time period.. one minute slow.. one minute normal. But it is definitely not a router issue. |
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Hispanic
join:2000-01-22
Hoboken, NJ | reply to Hispanic
I can't even access speedtest.net to test. I can only acccess nyc.speakeasy.net and I get 9956kbps/23784kbps. And this is with the actiontech router. |
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