Benchmarks for 128GB of RAM.

lib/ssd-test.256G.4k.32.fio

+[global]
+bs=4k
+ioengine=libaio
+iodepth=32
+size=256g
+direct=1
+runtime=60
+directory=/mnt
+filename=ssd.test.file
+
+[seq-read]
+rw=read
+stonewall
+
+[rand-read]
+rw=randread
+stonewall
+
+[seq-write]
+rw=write
+stonewall
+
+[rand-write]
+rw=randwrite
+stonewall

lib/ssd-test.256G.4k.4.fio

+[global]
+bs=4k
+ioengine=libaio
+iodepth=4
+size=256g
+direct=1
+runtime=60
+directory=/mnt
+filename=ssd.test.file
+
+[seq-read]
+rw=read
+stonewall
+
+[rand-read]
+rw=randread
+stonewall
+
+[seq-write]
+rw=write
+stonewall
+
+[rand-write]
+rw=randwrite
+stonewall

lib/ssd-test.256G.64k.32.fio

+[global]
+bs=64k
+ioengine=libaio
+iodepth=32
+size=256g
+direct=1
+runtime=60
+directory=/mnt
+filename=ssd.test.file
+
+[seq-read]
+rw=read
+stonewall
+
+[rand-read]
+rw=randread
+stonewall
+
+[seq-write]
+rw=write
+stonewall
+
+[rand-write]
+rw=randwrite
+stonewall