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authormav <mav@FreeBSD.org>2014-01-05 22:12:45 +0000
committermav <mav@FreeBSD.org>2014-01-05 22:12:45 +0000
commit0e037d0ee89bf5f6ed599a59942197523e7515f0 (patch)
tree723143598fd2e179065ad7b259601d4acb4991eb /sys/dev/usb/controller/ohci.c
parentfe82b61321d95949dd3b45f4e9ea7923b97ec6d8 (diff)
downloadFreeBSD-src-0e037d0ee89bf5f6ed599a59942197523e7515f0.zip
FreeBSD-src-0e037d0ee89bf5f6ed599a59942197523e7515f0.tar.gz
MFC r258342:
Reenable vfs.zfs.zio.use_uma for amd64, disabled at r209261. On machines with seveal CPUs and enough RAM this can easily twice improve ZFS performance or twice reduce CPU usage. It was disabled three years ago due to memory and KVA exhaustion reports, but our VM subsystem got improved a lot since that time, hopefully enough to make another try.
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