Re: cpuidle results in ethernet degredation ?

2015-08-05 Thread Tony Lindgren
* Ran Shalit ransha...@gmail.com [150804 02:35]: but why does it happen in small packet test and not in big packets ? No idea.. Maybe there's some extra delay caused at the Ethernet controller fifo or something with small packets. as to your suggestion above, Can you please give a hint as

Re: cpuidle results in ethernet degredation ?

2015-08-04 Thread Tony Lindgren
* Ran Shalit ransha...@gmail.com [150803 07:03]: I am using GPMC with smsc911x controller. If I understand you correctly, I can overcome this, but asking the hardware not get into inactive state. Correct. Probably the automatic way to block deeper idle states here with GPMC would be to

Re: cpuidle results in ethernet degredation ?

2015-08-04 Thread Ran Shalit
On Tue, Aug 4, 2015 at 11:09 AM, Tony Lindgren t...@atomide.com wrote: * Ran Shalit ransha...@gmail.com [150803 07:03]: I am using GPMC with smsc911x controller. If I understand you correctly, I can overcome this, but asking the hardware not get into inactive state. Correct. Probably the

Re: cpuidle results in ethernet degredation ?

2015-08-03 Thread Tony Lindgren
* Ran Shalit ransha...@gmail.com [150801 11:34]: Hi , I've accidently omitted linux-omap in last message, so please here it is again: I think that if someone here understand cpuidle it may lead me to a solution... 1. I'm using TI's kernel 2.6.37

Re: cpuidle results in ethernet degredation ?

2015-08-03 Thread Ran Shalit
On Mon, Aug 3, 2015 at 4:21 PM, Tony Lindgren t...@atomide.com wrote: * Ran Shalit ransha...@gmail.com [150801 11:34]: Hi , I've accidently omitted linux-omap in last message, so please here it is again: I think that if someone here understand cpuidle it may lead me to a solution... 1.

Re: cpuidle results in ethernet degredation ?

2015-08-01 Thread Ran Shalit
Hi , I've accidently omitted linux-omap in last message, so please here it is again: I think that if someone here understand cpuidle it may lead me to a solution... 1. I'm using TI's kernel 2.6.37 http://git.kernel.org/cgit/linux/kernel/git/tmlind/linux-omap.git/ 2. I think it is related to the

Re: cpuidle results in ethernet degredation ?

2015-07-31 Thread Robert Nelson
On Fri, Jul 31, 2015 at 11:29 AM, Ran Shalit ransha...@gmail.com wrote: On Thu, Jul 30, 2015 at 9:49 PM, Ran Shalit ransha...@gmail.com wrote: Hello, I hope some will have some idea: I am using iperf to check bandwidth and I see that with small tcp windows in the test there is always high

Re: cpuidle results in ethernet degredation ?

2015-07-31 Thread Ran Shalit
On Thu, Jul 30, 2015 at 9:49 PM, Ran Shalit ransha...@gmail.com wrote: Hello, I hope some will have some idea: I am using iperf to check bandwidth and I see that with small tcp windows in the test there is always high degredation in performance compared to version without cpuidle. I've

cpuidle results in ethernet degredation ?

2015-07-30 Thread Ran Shalit
Hello, I hope some will have some idea: I am using iperf to check bandwidth and I see that with small tcp windows in the test there is always high degredation in performance compared to version without cpuidle. I've noticed that C3 state (core inactive) is entered several times during the test,