Hello, we have a problem I`ve recentrly described on VyOS forum
in short, when bgp starts, it eats a bit more 400M memory. After a day - consumed memory reaches 1Gig.
After 5-6 days, consumed memory reaches 3,5 - 4.0 Gigs and continues with growing.
Some outputs has provided in forum thread. If you need additional outputs/info, please ask.