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From: | Jan Menzel |
Subject: | Re: [lwip-users] Problem running lwip on cortex M7 with D cache enabled |
Date: | Tue, 5 Dec 2017 10:54:11 +0100 |
User-agent: | Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 |
On 05.12.2017 8:22, Jochen Strohbeck wrote: > I found an error in the non-cacheable section declaration in the linker > configuration file. Fixed that. > Did you check the performance for your system? I suppose with buffers in non-cached memory you do not have any benefits of the d-cache. If you can't get any of the options I suggested to run, you still might use dedicated non-cached RX buffers in the driver and copy received data into cached LWIP memory. This way the processing of all the headers will still benefit from the d-cache even though you have the extra work of coping the data. Jan
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