Made even more (once) reserved memory available to Linux on Phicomm N1The corresponding memory region was shrinked in DTB for 3.1x by this patch, and I changed the dtb I’m using accordingly.
--- a.dts 2018-01-01 00:00:00.000000000 +0000
+++ b.dts 2018-01-01 00:00:00.000000000 +0000
@@ -167,7 +167,7 @@
hwrom@0 {
no-map;
- reg = < 0x00 0x00 0x00 0x1000000 >;
+ reg = < 0x00 0x00 0x00 0x100000 >;
};
linux,cma {
This change frees up 15M of memory.
stress-ng --vm 16 --vm-bytes 128M --timeout 10s does not show anything wrong:
stress-ng: info: [12345] dispatching hogs: 16 vm
stress-ng: info: [12345] cache allocate: using built-in defaults as unable to determine cache details
stress-ng: info: [12345] successful run completed in 10.04s
Now the box looks like this:
____ ___
/ ___|/ _ \__ ____ ____ __
\___ \ (_) \ \/ /\ \/ /\ \/ /
___) \__, |> < > < > <
|____/ /_//_/\_\/_/\_\/_/\_\
Welcome to ARMBIAN 5.67 user-built Ubuntu 18.10 4.19.6-aml-s9xxx
System load: 0.46 0.47 0.20 Up time: 1 min
Memory usage: 7 % of 1986MB IP: 127.0.0.1
CPU temp: 10°C
Usage of /: 24% of 6.9G
The compiled one is also available: meson-gxl-s905d-phicomm-n1-usbfix-ethfix-memfix2. (Note that this dtb reclaims memory for framebuffer (GPU), and thus only suitable for headless use.)
The corresponding memory region was shrinked in DTB for 3.1x by this patch, and I changed the dtb I’m using accordingly.
--- a.dts 2018-01-01 00:00:00.000000000 +0000
+++ b.dts 2018-01-01 00:00:00.000000000 +0000
@@ -167,7 +167,7 @@
hwrom@0 {
no-map;
- reg = < 0x00 0x00 0x00 0x1000000 >;
+ reg = < 0x00 0x00 0x00 0x100000 >;
};
linux,cma {This change frees up 15M of memory.
stress-ng --vm 16 --vm-bytes 128M --timeout 10s does not show anything wrong:
stress-ng: info: [12345] dispatching hogs: 16 vm
stress-ng: info: [12345] cache allocate: using built-in defaults as unable to determine cache details
stress-ng: info: [12345] successful run completed in 10.04sNow the box looks like this:
____ ___
/ ___|/ _ \__ ____ ____ __
\___ \ (_) \ \/ /\ \/ /\ \/ /
___) \__, |> < > < > <
|____/ /_//_/\_\/_/\_\/_/\_\
Welcome to ARMBIAN 5.67 user-built Ubuntu 18.10 4.19.6-aml-s9xxx
System load: 0.46 0.47 0.20 Up time: 1 min
Memory usage: 7 % of 1986MB IP: 127.0.0.1
CPU temp: 10°C
Usage of /: 24% of 6.9GThe compiled one is also available: meson-gxl-s905d-phicomm-n1-usbfix-ethfix-memfix2. (Note that this dtb reclaims memory for framebuffer (GPU), and thus only suitable for headless use.)