[OpenAFS] replication over slower bandwidth

muayad y muayad_y@yahoo.com
Tue, 7 Feb 2012 16:28:06 -0800 (PST)


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Hi,
=A0 with netperf/UDP tests UDP_STREAM/UDP_RR,=A0 I was able to get better i=
dea about=0Aline speed=A0 with minimal of 400KBPS. Even after using tc and =
with=A0 best scenario happened, where=0Ano retransmit occured, I was able t=
o transfer 4.6 MB in ~35 seconds.=20
=A0=20
There is no disconnect=A0 between the two=A0 nodes,=A0 I have limited=0Atra=
nsfer rate/upload speed/mtu , but with no luck. I do not want to jump=0Aint=
o a conclusion nor make judgment, but how can I fill up the pipe if=0Arxudp=
 does not pump much data into it? ~240=A0 bytes/packet


May be someone else can use tc netem to reproduce the problem.

Thanks
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<table cellspacing=3D"0" cellpadding=3D"0" border=3D"0" ><tr><td valign=3D"=
top" style=3D"font: inherit;">Hi,<br>&nbsp; with netperf/UDP tests UDP_STRE=
AM/UDP_RR,&nbsp; I was able to get better idea about=0Aline speed&nbsp; wit=
h minimal of 400KBPS. Even after using tc and with&nbsp; best scenario happ=
ened, where=0Ano retransmit occured, I was able to transfer 4.6 MB in ~35 s=
econds. <br>&nbsp; <br>There is no disconnect&nbsp; between the two&nbsp; n=
odes,&nbsp; I have limited=0Atransfer rate/upload speed/mtu , but with no l=
uck. I do not want to jump=0Ainto a conclusion nor make judgment, but how c=
an I fill up the pipe if=0Arxudp does not pump much data into it? ~240&nbsp=
; bytes/packet<br><br><br>May be someone else can use tc netem to reproduce=
 the problem.<br><br>Thanks</td></tr></table>
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