On Thu, 9 Feb 2023 19:10:16 +0000 Haiyang Zhang wrote:

But I'm just worried about if a VM sending at high speed, and host side is,
for some reason, not able to send them correctly, the log file will become 
really big and difficult to download and read. With rate limit, we still see 
dozens of messages every 5 seconds or so, and it tells you how many 
messages are skipped. And, if the rate is lower, it won't skip anything. 
Isn't this info sufficient to debug?

By the way, guests cannot trust the host -- probably we shouldn't allow the
host to have a way to jam guest's log file?

+1 FWIW, the general guidance is to always rate limit prints
which may be triggered from the datapath (which I'm guessing
this is based on the names of things)