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| author | Felix Fietkau <nbd@nbd.name> | 2016-08-01 14:52:13 +0200 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2016-08-01 14:53:27 +0200 |
| commit | 5c9cc7b7f8920944a413644e1c2ea23bfe655bcb (patch) | |
| tree | c5da77de97d3c6e1b01d002621b9db916cae8b25 | |
| parent | df3a2ca1a9154361167e0e30745ca7954bf13b6f (diff) | |
| download | upstream-5c9cc7b7f8920944a413644e1c2ea23bfe655bcb.tar.gz upstream-5c9cc7b7f8920944a413644e1c2ea23bfe655bcb.tar.bz2 upstream-5c9cc7b7f8920944a413644e1c2ea23bfe655bcb.zip | |
base-files: increase vm.min_free_kbytes
Network drivers typically allocate memory in atomic context. For that to
be reliable, there needs to be enough free memory. Set the value
heuristically based on the total amount of system RAM.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
| -rwxr-xr-x | package/base-files/files/etc/init.d/sysctl | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/package/base-files/files/etc/init.d/sysctl b/package/base-files/files/etc/init.d/sysctl index 2dfbaf7a6e..a0daec071e 100755 --- a/package/base-files/files/etc/init.d/sysctl +++ b/package/base-files/files/etc/init.d/sysctl @@ -2,7 +2,23 @@ # Copyright (C) 2006 OpenWrt.org START=11 + +set_vm_min_free() { + mem="$(grep MemTotal /proc/meminfo | awk '{print $2}')" + if [ "$mem" -gt 65536 ]; then # 128M + val=16384 + elif [ "$mem" -gt 32768 ]; then # 64M + val=8192 + elif [ "$mem" -gt 16384 ]; then # 32M + val=4096 + else + return + fi + sysctl -qw vm.min_free_kbytes="$val" +} + start() { + set_vm_min_free for CONF in /etc/sysctl.conf /etc/sysctl.d/*.conf; do [ -f "$CONF" ] && sysctl -p "$CONF" -e >&- done |