Messages in this thread | | | Subject | Re: a joint letter on low latency and Linux | Date | Sun, 9 Jul 2000 18:49:35 +0100 (BST) | From | Alan Cox <> |
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> take 500msec. If printk() wants guarantees about being able to print > any time, whole fbcon has to be cli-ed even for normal > operation. Ouch. > > Or we could give something up. Like giving up printk altogether [not > good] or declaring that printk is emergency-only and may mess up > screen.
We actually sort of do the latter for text console - it is less likely to occur but can happen. Do a printk() in a tight loop and you'll see the console sometimes jump maybe 40 characters to the right then jump back
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