2009-06-04 08:41:06     how test/change udp socket internal buffer in uCLinux (BF37)

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2009-06-04 08:41:06     how test/change udp socket internal buffer in uCLinux (BF37)

Adam W (POLAND)

Message: 75210   

 

I want to check and probably change internal socket buffer inuCLinux ?

 

How can I do that ?

 

 

 

thanks

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2009-06-04 12:34:19     Re: how test/change udp socket internal buffer in uCLinux (BF37)

Mike Frysinger (UNITED STATES)

Message: 75217   

 

what exactly are you talking about ?

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2009-06-04 15:42:38     Re: how test/change udp socket internal buffer in uCLinux (BF37)

Adam W (POLAND)

Message: 75218   

 

I mean internal buffer that Linux allocate for udp received packets.

 

I found command like that:   sysctl -w net.core.rmem_max

 

but it doesnt work in uCLinux.

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2009-06-04 15:43:45     Re: how test/change udp socket internal buffer in uCLinux (BF37)

Adam W (POLAND)

Message: 75219   

 

correct:  sysctl -w net.core.rmem_max=100000

 

doesnt work

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2009-06-04 16:02:17     Re: how test/change udp socket internal buffer in uCLinux (BF37)

Mike Frysinger (UNITED STATES)

Message: 75220   

 

you need to provide details when you say something "doesnt work".  what *exactly* doesnt work ?

 

setting the net/core/rmem_max field works just fine for me on the default builds.

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2009-06-10 05:06:20     Re: how test/change udp socket internal buffer in uCLinux (BF37)

Adam W (POLAND)

Message: 75447   

 

sorry for latency. "Doesnt work" means that command sysctl -w net.core.rmem_max=8388608 answers:

 

sysctl: not found

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2009-06-10 05:18:39     Re: how test/change udp socket internal buffer in uCLinux (BF37)

Mike Frysinger (UNITED STATES)

Message: 75448   

 

if you want to use the sysctl program, then you must enable it in your user/vendor configuration settings

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2009-06-10 06:13:14     Re: how test/change udp socket internal buffer in uCLinux (BF37)

Adam W (POLAND)

Message: 75451   

 

Thanks, but I will ask silly question, but... how to do that ?

 

(I am newby with linux...)

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2009-06-10 07:45:22     Re: how test/change udp socket internal buffer in uCLinux (BF37)

Adam W (POLAND)

Message: 75455   

 

I changed size of this buffer manually by rewritting file  /proc/sys/net//core/rwmem_max.

 

thanks

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2009-06-10 14:12:16     Re: how test/change udp socket internal buffer in uCLinux (BF37)

Mike Frysinger (UNITED STATES)

Message: 75471   

 

it is like any other application in your menuconfiguration.  enter the menu system like normal, locate the program in the list (use the search function, or use the simple one integrated into busybox), enable it, and then rebuild everything.

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