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shars

join:2003-09-27
23344

Speed Test Results - http://miranda.ctd.anl.gov:71

ok since not many new topics recently, thought id post somthing.

recently i went to »miranda.ctd.anl.gov:7123 and did a speed test. the test returns a lot of technical stuff, most of which im not clear of. in any case, something caught my eye and im not sure if its anything at all.

------ Web100 Detailed Analysis ------
Link detection algorithm failed due to excessive Round Trip Times.
Link set to Half Duplex mode
Information: throughput is limited by other network traffic.
Good network cable(s) found
Normal duplex operation found.

Web100 reports the Round trip time = 1990.0 msec; the Packet size = 1380 Bytes; and
There were 2 packets retransmitted, 0 duplicate acks received, and 0 SACK blocks received
The connection stalled 1 times due to packet loss
The connection was idle 5.88 seconds (65.33%) of the time
This connection is network limited 99.79% of the time.

Contact your local network administrator to report a network problem
Excessive packet loss is impacting your performance, check the auto-negotiate function on your local PC and network switch

Web100 reports TCP negotiated the optional Performance Settings to:
RFC 2018 Selective Acknowledgment: ON
RFC 896 Nagle Algorithm: OFF
RFC 3168 Explicit Congestion Notification: OFF
RFC 1323 Time Stamping: OFF
RFC 1323 Window Scaling: OFF

This is the info im not sure about:

Information: Network Middlebox is modifying MSS variable

Server IP addresses are preserved End-to-End

Information: Network Address Translation (NAT) box is modifying the Client's IP address Server says [] but Client says []

then when i click for more info, it says:

CountRTT: 2
CurrentCwnd: 4140

CurrentMSS: 1380 ---> shouldnt it be 1452

CurrentRTO: 5880
CurrentRwinRcvd: 29040
CurrentRwinSent: 5840
CurrentSsthresh: 2760

However, when i go to some other sites they report my MSS=1452, weird. Anyone care to do the test and see what it says?


teh
Gekke Kraai
Premium
join:2003-03-21
Malaysia

1 edit
WEB100 Enabled Statistics:
Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done
running 10s outbound test (client to server) . . . . . 55.59Kb/s
running 10s inbound test (server to client) . . . . . . 180.45kb/s

------ Client System Details ------
OS data: Name = Windows XP, Architecture = x86, Version = 5.1
Java data: Vendor = Sun Microsystems Inc., Version = 1.4.2

------ Web100 Detailed Analysis ------
Cable modem/DSL/T1 link found.
Link set to Full Duplex mode
No network congestion discovered.
Good network cable(s) found
Normal duplex operation found.

Web100 reports the Round trip time = 439.67 msec; the Packet size = 1380 Bytes; and
There were 2 packets retransmitted, 30 duplicate acks received, and 30 SACK blocks received
The connection was idle 0 seconds (0%) of the time
This connection is receiver limited 12.25% of the time.
Increasing the current receive buffer (23.0 KB) will improve performance
This connection is network limited 87.52% of the time.
Contact your local network administrator to report a network problem
Contact your local network admin and report excessive packet reordering

Web100 reports TCP negotiated the optional Performance Settings to:
RFC 2018 Selective Acknowledgment: ON
RFC 896 Nagle Algorithm: OFF
RFC 3168 Explicit Congestion Notification: OFF
RFC 1323 Time Stamping: OFF
RFC 1323 Window Scaling: OFF
Information: Network Middlebox is modifying MSS variable
Server IP addresses are preserved End-to-End
Information: Network Address Translation (NAT) box is modifying the Client's IP address
Server says [219.95.10.253] but Client says [192.168.1..X]

If you getting lower than 1492 then its XP problem. Either use router or use raspppoe.


shars2

@219.94.x.x
im using a router and the same results for you too.

see 4th last line of your post "Information: Network Middlebox is modifying MSS variable"

did you select more info, it tells you your current MSS values its detecting.


teh
Gekke Kraai
Premium
join:2003-03-21
Malaysia

2 edits
do not have a clickable option for that... I can't see it. I know my is 1452 as well but 1492 is about MTU NOT MSS

»www.speedguide.net:8117/

Term: MSS

Description
MSS (Maximum Segment Size) defines the largest segment of TCP (Transfer Control Protocol) data that the Winsock is prepared to receive. When a connection is established, the two ends agree to use the smaller of each end's value. Because headers are typically 40 bytes, MSS is usually 40 less than the MTU (Maximum Transmission Unit).


zeone
Me
Premium
join:2003-04-24
Msia

1 edit
reply to shars
Hi!
Below info I got when clicked for more info...

MaxRTO: 1270
MaxRTT: 580
MaxRwinRcvd: 23040
MaxRwinSent: 5840
MaxSsthresh: 6900
MinMSS: 1380
MinRTO: 650
MinRTT: 360

So Minimum MSS is 1380.
Acc to dslr tweak test, my MSS requested was 1440.
Frankly dunno what such figures represent..

However, Me not worried as long as access is good & as expected...:)

PS..Teh, yr inbound appears to be kinda slow, huh? What gives? Location prob?
My inbound as below:
running 10s inbound test (server to client) . . . . . . 226.10kb/s
Your PC is connected to a Cable/DSL modem
Information: Other network traffic is congesting the link
--
Every day is a New Beginning...


teh
Gekke Kraai
Premium
join:2003-03-21
Malaysia
Not bothered one bit about it. I don't feel lag. Some sites I tests I get this kind of results
--
Broederschap Der Kraaien


zeone
Me
Premium
join:2003-04-24
Msia

1 edit
said by teh:
Not bothered one bit about it. I don't feel lag. Some sites I tests I get this kind of results

Yu got the point, Teh!
That's exactly what I was trying to point out in my post! All these tech figures NOT mean anything to end-users like yu & me (& most others too!)...
It's the actual practical usage at the time that REALLY counts! Hang the figures, etc, etc, etc...right?:)

Diff sites gonna give diff results at diff times on diff days fr diff places, etc, etc, etc!
Gonna go crazy if affected by all those figures...:D
--
Every day is a New Beginning...