On 12/10/2013 06:24 PM, Kotwani, Mukul wrote: > 2.6.18, not sure about the IO schedulers. The default scheduler > could be different. Is the expected performance between the > schedulers supposed to be that dramatically different?
I expect redhat didn't backport CFS to 2.6.18 -- that's the process scheduler, not i/o. Whether it'd make a difference depends on your job mix, of course. But in general if it were centos/sl you could try installing kernel-ml from elrepo and then running your comparison. If it's rhel: talk to redhat (and they'll probably advise you to upgrade to 6.5 if not 7). -- Dimitri Maziuk Programmer/sysadmin BioMagResBank, UW-Madison -- http://www.bmrb.wisc.edu
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