commit c2f05dc8af0dec10272dda8203472217da9ee939
author Austin Schuh <austin.linux@gmail.com> Sat Mar 06 23:05:09 2021 -0800
committer Austin Schuh <austin.linux@gmail.com> Sat Mar 06 23:13:53 2021 -0800
tree 88e0d81bf048f523a865502c255d69831f8f3cfe
parent bad18bd3681e7702c1b2d70daf2673f56bac942b

Force the kernel to keep more memory free

We were OOMing when copying large files to the roboRIO.  The network
stack was struggling to allocate memory.  Keep more free for it.

Change-Id: I856cc3964c8790d0681c272a9ac948711c6a50bc

frc971/config/setup_roborio.sh

diff --git a/frc971/config/setup_roborio.sh b/frc971/config/setup_roborio.sh
index f70d4fa..47e1f7d 100755
--- a/frc971/config/setup_roborio.sh
+++ b/frc971/config/setup_roborio.sh
@@ -45,6 +45,7 @@
 
 ssh "admin@${ROBOT_HOSTNAME}" 'echo "net.core.wmem_max=1262560" >> /etc/sysctl.conf'
 ssh "admin@${ROBOT_HOSTNAME}" 'echo "net.core.rmem_max=1262560" >> /etc/sysctl.conf'
+ssh "admin@${ROBOT_HOSTNAME}" 'echo "vm.min_free_kbytes=4000" >> /etc/sysctl.conf'
 
 ssh "admin@${ROBOT_HOSTNAME}" mkdir "/lib/modules/4.14.87-rt49-cg-7.0.0f0-xilinx-zynq-189/kernel/net/sctp/ -p"
 scp frc971/config/sctp.ko "admin@${ROBOT_HOSTNAME}:/lib/modules/4.14.87-rt49-cg-7.0.0f0-xilinx-zynq-189/kernel/net/sctp/sctp.ko"