Hi again
It seems that with
echo 513920 > /proc/sys/net/core/rmem_default echo 513920 > /proc/sys/net/core/rmem_max
and under our lan conditions
Timeout notAnswered=[1] notReady=[1] nrAns=1 nrRead=1 nrPart=2 avg=707 bytes= 21 178 134K re-xmits=0000000 ( 0.0%) slice=0112 - 0
we can recover behaviour preceding.
2012/1/20 Lluís Gras lluisgg@joseptous.info
Great !!!
--nosync do the trick
But still a lot of re-xmits, ie
root@debian:~# udp-sender --file /dev/sda6 --interface eth0 -P 9000 . . . bytes= 24 038 355K re-xmits=2071665 ( 12.2%) slice=0112 - 0 Timeout notAnswered=[0] notReady=[0] nrAns=0 nrRead=0 nrPart=1 avg=743 Timeout notAnswered=[0] notReady=[0] nrAns=0 nrRead=0 nrPart=1 avg=923 bytes= 24 143 004K re-xmits=2080485 ( 12.2%) slice=0112 - 0 Transfer complete. Disconnecting #0 (192.168.10.21)
root@debian:~# udp-receiver --file /dev/sda6 --nosync --interface eth0 -P 9000 Udp-receiver 20110710 UDP receiver for /dev/sda6 at 192.168.10.21 on eth0 received message, cap=00000009 Connected as #0 to 192.168.10.16 Listening to multicast on 232.168.10.16 Press any key to start receiving data! bytes= 24 143 004K (439.79 Mbps)) Transfer complete.
Thanks
2012/1/19 Raul Sanchez raul@um.es
Hi
Have you try to use "--no-sync" option?
I had a similar problem and i solved it that way. I think that udpcast has change its default settings in any cases.
Byeee
Lluís Gras lluisgg@joseptous.info escribió:
Hi
Sorry for my English.
I have been using udpcast (PXE or a custom Debian Live) over the past two years (version 20100130) and I recently upgraded to the latest version ( 20110710), the old version got a transfer rate of about 480Mbps, withfeww reemissions (approximately 10 re-xmits) with the new and the same teams involved does not exceed 43 Mbps. I tried to disable ipv6 (ipv6.disable =
- but there was no difference.
If I use the udp-sender (20110710) with the udp-receiver (20100130) recovered the rate of 480 Mbps.
How do I find out why the number of re-xmits increases significantly?
Thanks in advance