Justin T Pryzby <just...@norchemlab.com> wrote: > On Thu, Oct 08, 2009 at 10:49:37AM -0700, Joshua D. Drake wrote: >> Did your scheduler change between the kernel versions? > No, it's deadline for both. How about write barriers? I had a kernel upgrade which turned them on for xfs, with unfortunate performance impacts. The xfs docs explicitly recommend disabling it if you have a battery backed cache in your RAID controller. -Kevin
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