This is a bit off-topic, but did you try to increase the JVM limits inside Yacy’s administration panel?
Spoilering to hide wall of text related to this topic.
This setting located in /Performance_p.html
-page for example gives the java runtime more memory. Same page also has other settings related to ram, such as setting how much memory Yacy must leave unused for the system. (These settings exist so people who run Yacy on their personal machines can have guaranteed resources for more important stuff)
Other things that would reduce memory usage is to limit the concurrency of the crawler for example. There’s quite a lot of tunable settings that can affect memory usage. Would recommend trying to hit up one of the Yacy forums is also good place to ask questions. The Matrix channel (and IRC) are a bit dead, but there are couple of people including myself there!
Also, theres new docs written by the community, they might help as well! https://yacy.net/docs/ https://yacy.net/operation/performance/
I’m not advocating for breaking any rules, but many people dont know that you can hide your wifi routers SSID. even fewer people know how to track these networks.