topic Re: Unusual memory usage with kernel 4.4.x & 4.9.x on i.MX28 EVK in i.MX Processors https://community.nxp.com/t5/i-MX-Processors/Unusual-memory-usage-with-kernel-4-4-x-4-9-x-on-i-MX28-EVK/m-p/708006#M110006 <HTML><HEAD></HEAD><BODY><P>Please provide more detailed information to reproduce it.</P><P>How do you get the memory usage?</P><P>What is the network setup (i assume your EVK is really connected to network)?</P><P>Which kernel config do you use (mxs_defconfig)?</P><P>How long does it take to reach the 25 MB?</P><P>Did you try to enable CONFIG_DEBUG_KMEMLEAK in kernel?</P></BODY></HTML> Sat, 26 Aug 2017 10:13:37 GMT lategoodbye 2017-08-26T10:13:37Z Unusual memory usage with kernel 4.4.x & 4.9.x on i.MX28 EVK https://community.nxp.com/t5/i-MX-Processors/Unusual-memory-usage-with-kernel-4-4-x-4-9-x-on-i-MX28-EVK/m-p/708005#M110005 <HTML><HEAD></HEAD><BODY><P style="margin: 0px 0px 1em; padding: 0px; border: 0px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-variant-numeric: inherit; font-weight: normal; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: Arial, 'Helvetica Neue', Helvetica, sans-serif; vertical-align: baseline; clear: both; color: #242729; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial;">I've been trying to fix an unusual memory usage on i.MX28 EVK with the 4.4.x or 4.9.x kernel. The problem shows itself when i activate the eth interface, the used memory on the EVK increases slowly but constantly to reach to around<SPAN>&nbsp;</SPAN><SPAN style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: bold; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline;"><STRONG>25Mbytes</STRONG></SPAN>!</P><P style="margin: 0px 0px 1em; padding: 0px; border: 0px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-variant-numeric: inherit; font-weight: normal; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: Arial, 'Helvetica Neue', Helvetica, sans-serif; vertical-align: baseline; clear: both; color: #242729; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial;">The memory usage is fine with the<SPAN>&nbsp;</SPAN><SPAN style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: bold; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline;"><STRONG>3.16.x</STRONG></SPAN><SPAN>&nbsp;</SPAN>Kernel... is at about<SPAN>&nbsp;</SPAN><SPAN style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: bold; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline;"><STRONG>18Mbytes</STRONG></SPAN>.</P><P style="margin: 0px 0px 1em; padding: 0px; border: 0px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-variant-numeric: inherit; font-weight: normal; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: Arial, 'Helvetica Neue', Helvetica, sans-serif; vertical-align: baseline; clear: both; color: #242729; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial;">I can't find anything with an unusual memory usage...</P><P style="margin: 0px 0px 1em; padding: 0px; border: 0px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-variant-numeric: inherit; font-weight: normal; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: Arial, 'Helvetica Neue', Helvetica, sans-serif; vertical-align: baseline; clear: both; color: #242729; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial;">I am compiling my own kernel from kernel.org sources...</P><P style="margin: 0px 0px 1em; padding: 0px; border: 0px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-variant-numeric: inherit; font-weight: normal; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: Arial, 'Helvetica Neue', Helvetica, sans-serif; vertical-align: baseline; clear: both; color: #242729; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial;">Has anyone else seen this? Is this a generic Linux bug or is it a ethernet specific bug? Any good ideas on how to fix this before I start digging into the code?</P></BODY></HTML> Fri, 25 Aug 2017 20:51:45 GMT https://community.nxp.com/t5/i-MX-Processors/Unusual-memory-usage-with-kernel-4-4-x-4-9-x-on-i-MX28-EVK/m-p/708005#M110005 bachehkaraji 2017-08-25T20:51:45Z Re: Unusual memory usage with kernel 4.4.x & 4.9.x on i.MX28 EVK https://community.nxp.com/t5/i-MX-Processors/Unusual-memory-usage-with-kernel-4-4-x-4-9-x-on-i-MX28-EVK/m-p/708006#M110006 <HTML><HEAD></HEAD><BODY><P>Please provide more detailed information to reproduce it.</P><P>How do you get the memory usage?</P><P>What is the network setup (i assume your EVK is really connected to network)?</P><P>Which kernel config do you use (mxs_defconfig)?</P><P>How long does it take to reach the 25 MB?</P><P>Did you try to enable CONFIG_DEBUG_KMEMLEAK in kernel?</P></BODY></HTML> Sat, 26 Aug 2017 10:13:37 GMT https://community.nxp.com/t5/i-MX-Processors/Unusual-memory-usage-with-kernel-4-4-x-4-9-x-on-i-MX28-EVK/m-p/708006#M110006 lategoodbye 2017-08-26T10:13:37Z Re: Unusual memory usage with kernel 4.4.x & 4.9.x on i.MX28 EVK https://community.nxp.com/t5/i-MX-Processors/Unusual-memory-usage-with-kernel-4-4-x-4-9-x-on-i-MX28-EVK/m-p/708007#M110007 <HTML><HEAD></HEAD><BODY><P style="margin-bottom: .0001pt;"><SPAN style="font-size: 12.0pt; background: white;">Free, Top, ...</SPAN></P><P style="margin-bottom: .0001pt;"><SPAN style="font-size: 12.0pt; background: white;">YES, the device is connected to network via switch.</SPAN></P><P style="margin-bottom: .0001pt;"><SPAN style="font-size: 12.0pt; background: white;">The memory usage increases from 17M to 26M at about 30 minutes.</SPAN></P><P style="margin-bottom: .0001pt;"><SPAN style="font-size: 12.0pt; background: white;">I use&nbsp; tx28_defconfig for TX28 KaRo CoM</SPAN></P><P style="margin-bottom: .0001pt;"><SPAN style="font-size: 12.0pt; background: white;">I don't enable this option.</SPAN></P><P><SPAN style="font-size: 12.0pt; background: white;">&nbsp;</SPAN></P></BODY></HTML> Sun, 27 Aug 2017 04:42:01 GMT https://community.nxp.com/t5/i-MX-Processors/Unusual-memory-usage-with-kernel-4-4-x-4-9-x-on-i-MX28-EVK/m-p/708007#M110007 bachehkaraji 2017-08-27T04:42:01Z Re: Unusual memory usage with kernel 4.4.x & 4.9.x on i.MX28 EVK https://community.nxp.com/t5/i-MX-Processors/Unusual-memory-usage-with-kernel-4-4-x-4-9-x-on-i-MX28-EVK/m-p/708008#M110008 <HTML><HEAD></HEAD><BODY><P>The tx28_defconfig isn't part of mainline linux. Are you sure about using a mainline kernel?</P><P></P><P>Do you plan to enable CONFIG_DEBUG_KMEMLEAK ?</P></BODY></HTML> Sun, 27 Aug 2017 09:41:34 GMT https://community.nxp.com/t5/i-MX-Processors/Unusual-memory-usage-with-kernel-4-4-x-4-9-x-on-i-MX28-EVK/m-p/708008#M110008 lategoodbye 2017-08-27T09:41:34Z Re: Unusual memory usage with kernel 4.4.x & 4.9.x on i.MX28 EVK https://community.nxp.com/t5/i-MX-Processors/Unusual-memory-usage-with-kernel-4-4-x-4-9-x-on-i-MX28-EVK/m-p/708009#M110009 <HTML><HEAD></HEAD><BODY><P style="margin-bottom: .0001pt;"><SPAN style="font-size: 12.0pt;">TX28 is already supported in mainline kernel</SPAN></P><P style="margin-bottom: .0001pt;"><SPAN style="font-size: 12.0pt;"><A href="https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/tree/arch/arm/boot/dts/imx28-tx28.dts?h=v4.4.84">https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/tree/arch/arm/boot/dts/imx28-tx28.dts?h=v4.4.84</A></SPAN></P></BODY></HTML> Sun, 27 Aug 2017 21:08:28 GMT https://community.nxp.com/t5/i-MX-Processors/Unusual-memory-usage-with-kernel-4-4-x-4-9-x-on-i-MX28-EVK/m-p/708009#M110009 bachehkaraji 2017-08-27T21:08:28Z