On (04/07/17 17:23), Peter Zijlstra wrote:
> we are looking at different typical setups :) serial console
> seconds behind logbuf does not surprise me anymore.
That does sound like you're doing something wrong and should look at
reducing printk() more than anything else.
yeah, 45sec is an extreme case that simply doesn't surprise me anymore ;)
that's not a normal/usual delay, of course, we are not this mad. on average
it's much better and may be not so far 2 seconds after all. a massive OOM
report, of course, appends logbuf messages at a much higher rate than UART
serial console can swallow, so the delay is getting larger, expectedly.
and, no, I don't add any printk-s, I'm looking at the lockup reports