I discovered the function named printk_ratelimit(). Is this what everyone else is using ? wr -----Original Message----- From: redhat-list-bounces@xxxxxxxxxx [mailto:redhat-list-bounces@xxxxxxxxxx] On Behalf Of William Reich Sent: Monday, August 17, 2009 8:40 AM To: General Red Hat Linux discussion list Subject: serial console vs system performance Hello all... We have observed that when we have a serial console configured at 115200 baud rate, and a kernel module issuing LOTS of printk messages, the timing between our user space applications and kernel modules gets really messed up. In the same test without the serial console configured, no problems are observed. My question is - is there any documentation available that talks about how the serial port is configured when used for the console ? Polling ? Interrupt ? I am trying to search for a better solution than simply "get rid of the printk output". This question is related to both RH4 and RH5... thanks wr -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
