Request for clarification on disk i/o limitations

2007-04-26 Thread Mark Hull-Richter
ke at least 2x as long as SCSI "DAS" disks, and why paged i/o appears to be no more than 1/2 the speed of direct i/o on both types of disk, specifically for large i/os (>256k chunks.) Please reply with CC to me directly as I am still not on the list (but I will be soon.) Thanks. -- Ma

Re: Kernel traces coming back with trash/clutter [SOLVED]

2007-04-25 Thread Mark Hull-Richter
s to see if you can get it to asplode. It seems that my 'all KERN_DEBUG"some string here"' was off by one - there was one, the newest, with a comma after the KERN_DEBUG. Removing it solved the problem. Many thanks for the assistance. -- Mark Hull-Richter, Linux Kernel Engin

Re: Kernel traces coming back with trash/clutter

2007-04-24 Thread Mark Hull-Richter
" is KERN_DEBUG in , used with printk. Are you using printk in the following forms? printk(KERN_DEBUG "A debug message.\n"); Yes, exclusively. Perhaps you have something looping that's outputting KERN_DEBUG with a null message? Or one of your diagnostic printk statements includes

Kernel traces coming back with trash/clutter

2007-04-24 Thread Mark Hull-Richter
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