Date: Sat, 09 Apr 2011 15:56:02 -0400 From: dieterbsd@engineer.com To: freebsd-hackers@freebsd.org Subject: *printf(9) and PRINTF_BUFR_SIZE Message-ID: <8CDC50749BB9940-18FC-38C6@web-mmc-m02.sysops.aol.com>
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While working on other problems with *printf(9), log(9), etc. I stumbled upon: options PRINTF_BUFR_SIZE=3D128 # Prevent printf output being=20 interspersed. Question 1: Am I correct in thinking that PRINTF_BUFR_SIZE is supposed to prevent this: ada2: 300.000MB/s transfuhub2: 3 ports with 3 removable, self powered ers (SATA 2.x, UDMA6, PIO 8192bytes) ada2: Command Queueing enabled Question 2: Why is vprintf() the only function that does this buffering? As far as I can tell, the various functions that call kvprintf()=20 directly without going through vprintf() do not get buffered. I'm thinking that kvprintf() would be a better place for the buffering. Or would this=20 break something?
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