[Web10g-user] Congestion window limit

Brian Tierney bltierney at es.net
Mon Apr 1 12:19:29 EDT 2013


Check/increase these values using sysctl -a:

net.core.rmem_max = 16777216 
net.core.wmem_max = 16777216 
net.ipv4.tcp_rmem = 4096 87380 16777216
net.ipv4.tcp_wmem = 4096 65536 16777216


For more info see: http://fasterdata.es.net/host-tuning/linux/


On Apr 1, 2013, at 2:12 AM, Shakeel Amir <shakeel.amir at gmail.com> wrote:

> Hi,
> 
> While monitoring the TCP congestion window size using web10g, I noticed that it grows up to 800,000 bytes and then stays uniform. Does anyone know if there are some static limits which prevent the window from exceeding this value? I'm using TCP Cubic on a recent 3.8 Linux kernel.
> 
> Thanks!
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