I agree, I have... It's very big trouble if you have big websites... also if you use some cache plugin that generates 10k+ files daily, and it tries to sync/backup all of this cache garbage
xyzulu Maybe server can stops if here is no enough resourser to process a lot of small files as example - I have some websites with 50-90k + articles and I need to disable server caching only because it takes a lot of time for backups with cached files, or some another websites that use some custom plugins with a lot of temp files that updates every day too and rsyk make update all of them every day and it's very long process... I didnt have a problem with "server stop" maybe because I have powerful servers and small amount of websites, but I had spikes first times, and I needed to restrict the option with Maximum concurrent backups to 1-2 and only then it start works somehow. + you cant use cheap storage VPS because they provide low performance 2 vCPU that not enough to process that and when synk is going the bkp server always owerloaded... like 30+ min 100% cpu usage only to make a backup for one website. So the problem really exists and can be easily fixed via exclusions.
If someone can help with settings and can suggest how to exclude some folders via a custom way, let me know, please.