Re: Accurate Broadband Speed Tests



Kurt Ullman <kurtullman@xxxxxxxxx> hath wroth:

In article <b6dms3tptnvanbloopec1530nop3hf05qq@xxxxxxx>,

Pardon my igorance by I think service quality and QoS (Quality of
Service) are different animals. My guess(tm) is that your numbers are
a conglomeration of various imparement numbers, such as packet loss,
latency, jitter, and fragmentation.

Not sure what it is either (that is part of my question, I guess)
those are the numbers that Visual ware gives me.

Here's what my report for my home Cruzio 1500/384 DSL line looks like:
<http://mssjc.visualware.com/myspeed/db/report?id=848370>

Note the packet loss at about 6.5 seconds into the test, which
resulted in a huge latency value. I'm not sure what caused this
hickup, but it's probably one of a half dozen assorted daemons I have
running that eat CPU cycles and suck bandwidth (Skype, GizmoProject,
Pidgin, NTP, etc). This hickup later caused the QoS percentage to
drop well below 100%. The values much be constant to get a good QoS
value. Nice test.

--
Jeff Liebermann jeffl@xxxxxxxxxx
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
.



Relevant Pages

  • QOS on PIX 515 version 7.0
    ... sensitive to latency. ... The software company recommends 100 pings as a test and they say ... I used the following link to configure QOS on the PIX ... priority-queue statistics' and my LLQ shows zero for all statistics. ...
    (comp.dcom.sys.cisco)
  • Re: Packet loss every 30.999 seconds
    ... the latency is 3 ms. ... I don't see any packet loss even in ~5.2 where the ... network stack (but not drivers) is still Giant-locked. ... second or so when the hog starts up, and a 300-400 ms after the ...
    (freebsd-net)
  • Re: Packet loss every 30.999 seconds
    ... the latency is 3 ms. ... I don't see any packet loss even in ~5.2 where the ... network stack (but not drivers) is still Giant-locked. ... second or so when the hog starts up, and a 300-400 ms after the ...
    (freebsd-stable)
  • Re: Network requeriments of VoIP ?
    ... 50 msec of *jitter* is about the maximum. ... average variation in latency over a short period of time. ... Wireless is a particularly bad problem for VoIP because of commonly ... interference causing packet loss. ...
    (alt.internet.wireless)
  • Re: TCP/IP cluster interconnect?
    ... Latency, of course, is not an issue that is peculiar to IP. ... you'll have queueing latency (or packet loss, ... packet loss should be just as useful as a switched Ethernet link from ... While I wouldn't be happy clustering over the Internet, ...
    (comp.os.vms)