topic Re: I.MX6ULL FEC Memory Leak in i.MX Processors

I.MX6ULL FEC Memory Leak

Sungkyun — Wed, 23 Jun 2021 08:51:19 GMT

Hi,
I am using I.MX6ULL BSP 4.1.15_2.0.0ga. A memory leak occurs when monitoring using the free command while LAN is connected. Free memory decreases little by little. Is there a memory leak in the FEC driver?
(When I unplug the LAN connector, the memory leak stops.)
However, after 4 days of testing, it seems to converge.
Is this normal? I would appreciate it if you could tell me the reason for this phenomenon.

# while true; do echo 3 > /proc/sys/vm/drop_caches ; free -b | grep 'buffers/cache' | awk '{ print $4 }'; sleep 1; done

Sungkyun_0-1624437325674.png

Thanks.

Re: I.MX6ULL FEC Memory Leak

igorpadykov — Wed, 23 Jun 2021 10:42:33 GMT

Hi Sungkyun

L4.1.15_2.0.0 BSP is not more supported as outdated, recommended to migrate to

latest nxp releases described on

https://www.nxp.com/design/software/embedded-software/i-mx-software/embedded-linux-for-i-mx-applications-processors:IMXLINUX?tab=In-Depth_Tab

Best regards
igor

Re: I.MX6ULL FEC Memory Leak

Sungkyun — Thu, 24 Jun 2021 05:57:00 GMT

Hi,

The kernel cannot be upgraded because this product is already on sale. Could you explain whether this phenomenon is normal or not?

If it is normal for free memory to decrease for a certain period of time, could it be because of the Ring Buffer?

Thanks.