Write ENOBUFS about binance-trading-bot

[dasbts]

This was 99% likely memory issue. Fixed by tuning the server and adding ZRam then optimizing the /etc/sysctl.conf file as follows:
vm.vfs_cache_pressure=550
vm.swappiness=100
vm.dirty_background_ratio=4
vm.dirty_ratio=30
vm.overcommit_memory=1
vm.watermark_scale_factor=15
vm.page-cluster=0
vm.min_free_kbytes=225000
vm.page_lock_unfairness=4

Different settings for different computers. Mine is 6GB Acer Aspire and this worked well for that one with high I/O usage. I now have ~30% free at all time.