Differences

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--- venus-os:extended [2020-05-30 06:29] – [4. Node-RED] mvader
+++ venus-os:extended [2020-06-23 15:52] – [3.2 CPU & Memory resources] mvader
@@ Line 38: / Line 38: @@
 ===== 3. Requirements =====
+==== 3.1 GX Device compatibility ====
 A compatible GX device:
@@ Line 49: / Line 51: @@
 Venus OS extended is also available for certain RaspberryPi models. Installation files below, and installation & other raspberrypi specific instructions [[https://github.com/victronenergy/venus/wiki/raspberrypi-install-venus-image|here]].
+==== 3.2 CPU & Memory resources ====
+Both SignalK as well as Node-red are rather resource intensive software applications to run on the GX Device. From a CPU usage point of view as well as RAM memory.
+Ofcourse, how intensive depends on what kind of flows (node-red) or how many messages & handling of them (SignalK) happens in the system.
+From a GX device point of view, from the support models the Venus GX is the one with the least resources. Running both SignalK and Node-RED at the same time will be "pushing it" to say it simply.
+Cerbo GX is already much faster, as it has a dual core CPU as well as much more RAM.
+More details about CPU & RAM differences are in this document: https://github.com/victronenergy/venus/wiki/machines.
+When running out of RAM or CPU, the device will slow down. And eventually also reboot by itself due to the watchdog.
 ===== 3. How to install =====
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 The Venus GX has sufficient flash memory to run the Venus OS Extended image. But up until end of 2018 it was produced with a partition layout not suitable to run large versions of Venus OS. This appendix explains how to self update the partitions to the new format.
-Perform this procedure only when connected via Ethernet. Do not use the built-in WiFi AP to performing this procedure. The AP will not work half way the procedure.
+Perform this procedure only when connected via Ethernet port.
+Do not use the built-in WiFi AP to performing this procedure. The AP will not work half way the procedure. Similarly, any WiFi (client-) configuration will be wiped after running the installer. Therefore, as said, make sure to be able to connect on the LAN port before starting this procedure.
 **WARNING**: this procedure is available and documented here for the benefit of users that are technical enough to perform it. In order to make it possible for them to upgrade their Venus GX to make it compatible with the extended version of Venus OS. Victron offers no support or warranty on this. Running the installer is not something Victron normally asks end-users to do, its for in the factory.
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 Side info: see here for more details on installing an image.
-Once done, reboot the device, and then re-obtain yourself root access to continue. Note that all is reset, you'll need to go to Remote Console on LAN, then change access level again, enable ssh, change root password, and then login.
+Once done, reboot the device.
+After the boot (30 to 60 seconds) the LED will be slow blinking green. Indicating that the WiFi access point is off (as expected). More information about the LED operation is in the Venus GX manual.
+Now, re-obtain yourself root access to continue. Note that all settings will be wiped by the installer:
+  * you'll need to go to Remote Console on LAN, then change access level again, enable ssh, change root password, and then login.
+  * As warned above, you’ll need to do this on the LAN port. The built-in WiFi access-point will be disabled, and any previously configured WiFi (client-) configuration will be lost as the installer will have wiped all settings.
 === Step D. Restore the files ===
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 ssh 192.168.178.122 reboot
 </code>
+Once completed, the WiFi access point will be operational again.
 === Step E. Install extended Venus OS ===
 Now, the Venus GX has been repartitioned, and has a certain version of the normal Venus OS installed. Next step is to install the extended image. Refer to the Installation instruction chapter above.