Messages in this thread |  | | Date | Sat, 8 Apr 2017 00:40:47 +0900 | From | Sergey Senozhatsky <> | Subject | Re: [printk] fbc14616f4: BUG:kernel_reboot-without-warning_in_test_stage |
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On (04/07/17 17:23), Peter Zijlstra wrote: [..] > > we are looking at different typical setups :) serial console being 45 > > 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
-ss
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