Messages in this thread | | | Subject | Re: Weird tcp performance differences with 2.0 and 2.2 kernels | From | Andi Kleen <> | Date | 10 Feb 1999 17:53:41 +0100 |
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In article <m2679aio4w.fsf@blinky.bfr.co.il>, hjstein@bfr.co.il (Harvey J. Stein) writes: > "Mark R. Boyns" <boyns@contigo.com> writes: >> We're trying to figure out some weird performance differences between >> 2.0.x / 2.2.x kernels and the interface being used.
> I noticed some weird behavior last night. I was dialed into the > office from home. I was uploading some files via ftp. The modem send > light started off blinking rapidly (basically flickering) indicating > high traffic. Then it suddenly backed off, maybe sending about 1 > packet/second. It stayed like this for maybe 30-60 seconds & then > sped up again, but not to as fast as it was initially. Final > throughput was a little on the low side.
Congratulations. You just discovered the slow start TCP algorithm. Please read RFC2001 for more information.
-Andi
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