[Dxspider-support] Database users.v3j

I run the DX cluster at dxcluster.pa0esh.nl and lately my server has become somewhat sluggish. After some investigation I found that the user database users.v3j (located in /spider/data/) is being loaded entirely into memory. The file is currently 100MB in size and contains 266,323 records — all of which appear to be older than two years or have never logged in. My question: is it safe to clean up this database, and if so, is there a recommended procedure or built-in tool to remove stale or inactive users? I noticed there are conversion scripts in /spider/perl/ but nothing that looks like a purge or expiry tool. Any advice would be greatly appreciated. Kind regards, Erik, PA0ESH