Under normal conditions, the v2rayN interface plus the kernel has dozens of MB of standby memory and close to 0% CPU, making it a very peaceful background program. If your task manager shows that it has a few hundred MB of memory and a few percent of CPU all year round, it is probably a "convenience function" that is constantly working. Check according to the following order, and it can basically be suppressed.
1Traffic Statistics: Most Common Sources of CPU Consumption
In "Parameter Settings"Enable statistics(Traffic statistics) will record the upstream and downstream traffic of each node in real time. When there are more nodes and more traffic, the CPU will have a background noise all year round. If you don't focus on the traffic numbers, turning it off is a quick fix. In the same way, the real-time network speed display on the main interface is also a small overhead and can be turned off if you mind.
2Log level: debug will write to the disk like crazy
"Parameter Settings" → "Core Basic Settings"Log level if yes debug or info, the kernel will write the details of each connection into the log file - this is a treasure when troubleshooting problems, daily hangup is a pure waste, and the disk will be slowly occupied by the log file. Daily use warning, for thorough cleansing none. After making the changes, delete the accumulated log files in the program directory. Logs of several hundred MB are not uncommon.
3Too many subscription nodes + batch speed test
When there are hundreds of nodes in the subscription, two actions will cause the CPU to spike instantly: full batch speed measurement, and full list refresh after the subscription is updated. This is a normal phenomenon of "high while working and then falling after working", and there is no need to treat it; but if you don't need so many nodes:
- When measuring speed, only select a batch of tests in commonly used areas. It is not necessary to Ctrl+A Full test.
- Use subscription grouping to put commonly used nodes into a separate group, and stay in small groups for normal operations.
4Memory is slowly increasing? Fall back after restarting
After hanging up for a few days, the interface process memory slowly increased to two to three hundred MB. This is a normal feature of the desktop framework (don't rush to return the memory before others take it away). It is not a leak and explosion. It will fall back after restarting v2rayN. If it was already set Start automatically at boot, shutting down and restarting the computer every day is equivalent to automatic "maintenance", no need to worry about it. When looking at memory, it is recommended to look at "dedicated working set" rather than "commit size". The latter is naturally too large and can easily scare yourself.
5These occupations are normal, don't accidentally injure them.
- Slightly higher in Tun mode: Tun needs to process the whole system traffic at the network card layer, and the kernel (especially sing-box) occupancy is a little higher than that of the system proxy mode. In exchange for global takeover, it is worth it.
- When transmitting large traffic: It is normal for the core CPU to go up to a few percent when downloading or watching 4K. Encryption and decryption require computing power, and it will go down after the transfer is completed.
- The first few seconds after startup: Load subscriptions, initialize the peak of the kernel, and leave it alone.
If the above adjustments are made and the standby usage is still outrageous, first Upgrade both v2rayN and kernel to the latest——The old version has indeed fixed some occupancy issues; if it still doesn't work, backup guiConfigs Then re-unzip a clean program (Backup method).