From: "Injong Rhee" <rhee@eos.ncsu.edu>
To: "Stephen Hemminger" <shemminger@osdl.org>, "Sangtae Ha" <sha2@ncsu.edu>
Cc: <netdev@vger.kernel.org>
Subject: Re: TCP congestion graphs
Date: Wed, 25 Oct 2006 18:34:17 -0400 [thread overview]
Message-ID: <000701c6f885$b57aa390$4a580e98@ncsu2cc0c3fa00> (raw)
In-Reply-To: 20061025110207.78d38779@freekitty
Not sure why the slow start for cubic is slower than the others.
We will check on this.
----- Original Message -----
From: "Stephen Hemminger" <shemminger@osdl.org>
To: "Douglas Leith" <doug.leith@nuim.ie>; "Sangtae Ha" <sha2@ncsu.edu>
Cc: <netdev@vger.kernel.org>
Sent: Wednesday, October 25, 2006 2:02 PM
Subject: TCP congestion graphs
>I ran some congestion window tests against 2.6.19-rc3.
> For congestion window graphs see:
> http://developer.osdl.org/shemminger/tcp/2.6.19-rc3/
>
> The connection was a single flow with a 500ms RTT and a
> 100Mbit slowest link speed.
>
> BIC OK
> CUBIC OK (after patch)
> HIGHSPEED BROKEN?
> HTCP OK
> RENO OK (massive overshoot)
> SCALEABLE OK
> VEGAS OK (no better than Reno)
> VENO Same as Reno?
> WESTWOOD Overshoot then low window
>
> Highspeed has something wrong (test glitch?)
> Westwood behaves poorly
> Veno seems no better than either Reno or Vegas in this
> case.
>
> The end systems were from latest git. The netem bridge is using
> 2.6.18-rt with a patch to netem to use hrtimers. iperf was modified
> to allow easy selection of congestion control.
>
> --
> Stephen Hemminger <shemminger@osdl.org>
> -
> To unsubscribe from this list: send the line "unsubscribe netdev" in
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> More majordomo info at http://vger.kernel.org/majordomo-info.html
>
next prev parent reply other threads:[~2006-10-25 22:34 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-25 18:02 TCP congestion graphs Stephen Hemminger
2006-10-25 22:34 ` Injong Rhee [this message]
2006-10-26 1:30 ` Stephen Hemminger
2006-10-26 18:50 ` Hagen Paul Pfeifer
2006-10-26 19:36 ` Stephen Hemminger
2006-10-31 20:00 ` TCP congestion graphs (2.6.19-rc4) Stephen Hemminger
2006-10-31 23:25 ` Xiaoliang (David) Wei
2006-11-01 0:10 ` Stephen Hemminger
2006-11-01 1:30 ` David Miller
2006-11-01 5:25 ` Evgeniy Polyakov
2006-11-01 5:58 ` Stephen Hemminger
2006-11-02 5:44 ` David Miller
2006-11-02 19:58 ` Stephen Hemminger
2006-11-28 22:38 ` David Miller
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