no fallocate

no_fallocate.txt

PASS
BenchmarkWrite100EntryWithoutBatch	      50	  37415004 ns/op
BenchmarkWrite100EntryBatch10	     500	   3276359 ns/op
BenchmarkWrite100EntryBatch100	   10000	    362926 ns/op
BenchmarkWrite100EntryBatch500	   20000	     72593 ns/op
BenchmarkWrite100EntryBatch1000	   50000	     38534 ns/op
BenchmarkWrite1000EntryWithoutBatch	      50	  42914454 ns/op
BenchmarkWrite1000EntryBatch10	     500	   3900643 ns/op
BenchmarkWrite1000EntryBatch100	   10000	    386800 ns/op
BenchmarkWrite1000EntryBatch500	   20000	     81089 ns/op
BenchmarkWrite1000EntryBatch1000	   30000	     50059 ns/op
ok  	github.com/coreos/etcd/wal	26.175s

go test -v -run=X -bench=.
PASS
BenchmarkWrite100EntryWithoutBatch 500 3560409 ns/op
BenchmarkWrite100EntryBatch10 3000 345755 ns/op
BenchmarkWrite100EntryBatch100 30000 46576 ns/op
BenchmarkWrite100EntryBatch500 100000 12550 ns/op
BenchmarkWrite100EntryBatch1000 200000 7625 ns/op
BenchmarkWrite1000EntryWithoutBatch 500 3725705 ns/op
BenchmarkWrite1000EntryBatch10 3000 422587 ns/op
BenchmarkWrite1000EntryBatch100 20000 65590 ns/op
BenchmarkWrite1000EntryBatch500 100000 21907 ns/op
BenchmarkWrite1000EntryBatch1000 100000 15693 ns/op
ok github.com/coreos/etcd/wal 17.855s

PASS
BenchmarkWrite100EntryWithoutBatch 500 3549428 ns/op
BenchmarkWrite100EntryBatch10 5000 351502 ns/op
BenchmarkWrite100EntryBatch100 30000 45484 ns/op
BenchmarkWrite100EntryBatch500 100000 12596 ns/op
BenchmarkWrite100EntryBatch1000 200000 7572 ns/op
BenchmarkWrite1000EntryWithoutBatch 500 3709386 ns/op
BenchmarkWrite1000EntryBatch10 5000 399022 ns/op
BenchmarkWrite1000EntryBatch100 20000 65669 ns/op
BenchmarkWrite1000EntryBatch500 100000 23474 ns/op
BenchmarkWrite1000EntryBatch1000 100000 16744 ns/op
ok github.com/coreos/etcd/wal 19.615s

no fallocate