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Date: Thu, 02 Aug 2012 23:12:12 -0600 From: Chris Friesen <chris.friesen@...band.com> To: leroy christophe <christophe.leroy@....fr> CC: linux-kernel@...r.kernel.org Subject: Re: Huge performance degradation for UDP between 2.4.17 and 2.6 On 08/02/2012 06:27 AM, leroy christophe wrote: > Hi > > I'm having a big issue with UDP. Using a powerpc board (MPC860). > > With our board running kernel 2.4.17, I'm able to send 160000 voice > packets (UDP, 96 bytes per packet) in 11 seconds. > With the same board running either Kernel 2.6.35.14 or Kernel 3.4.7, I > need 55 seconds to send the same amount of packets. > > > Is there anything to tune in order to get same output rate as with > Kernel 2.4 ? Have you tried profiling it to see where the time is being spent? Also turning off any unnecessary features, debugging, etc? Chris -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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