> This is about not having kernel threads completely > lock out user (and other kernel) processes for > undesirable lengths of time. It is about improving > Solaris. It is about having more appropriate CPU > sharing between all of the threads in the system, > kernel and user. This is the root cause of the > pathological behavior I stumbled on.
Well said. When I ran into this problem a year ago (on a machine that should have been up to the task) I just chalked it up to gzip being a fairly new feature with bugs to work out. I figured I'd try again later. I don't think I knew about these forums at the time, or I might have posted. I think anyone with any kind of understanding of what gzip is would expect a slow down when using it (especially gzip 9). What was seen was beyond what was expected. Trying to tune the system to address the issue did not occur to me any more than trying to get a 600lb guy to do wind sprints to prepare him for a marathon later in the week. I figured a larger underlying problem needed to be addressed first. I'm looking forward to seeing what fixes come out of this discussion. -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
