new file: go-vs-openssl.md

openssl_benchmark/go-vs-openssl.md

@@ -0,0 +1,91 @@
+Go 1.4.2
+========
+
+39MB/s @1k
+
+	go1.4/src/crypto/cipher$ go test -bench=.
+
+	BenchmarkAESGCMSeal1K   	   50000	     25968 ns/op	  39.43 MB/s
+	BenchmarkAESGCMOpen1K   	   50000	     25914 ns/op	  39.51 MB/s
+	[...]
+
+Go 1.5
+======
+
+41MB/s @1k
+
+	go1.5/src/crypto/cipher$ ~/go/src/go1.5/bin/go test -bench=.
+
+	BenchmarkAESGCMSeal1K-2   	   50000	     24429 ns/op	  41.92 MB/s
+	BenchmarkAESGCMOpen1K-2   	   50000	     24578 ns/op	  41.66 MB/s
+	BenchmarkAESGCMSeal8K-2   	   10000	    190340 ns/op	  43.04 MB/s
+	BenchmarkAESGCMOpen8K-2   	   10000	    190308 ns/op	  43.05 MB/s
+	[...]
+
+openssl 1.0.1k
+==============
+
+302MB/s @1k
+
+	$ openssl speed -elapsed -evp aes-128-gcm
+
+	[...]
+	The 'numbers' are in 1000s of bytes per second processed.
+	type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes
+	aes-128-gcm      71275.15k    80063.19k   275048.36k   302066.69k   308912.13k
+
+
+gocryptfs with openssl bindings
+===============================
+
+148MB/s @4k
+
+	gocryptfs/openssl_benchmark$ ./openssl_benchmark.bash 
+
+	BenchmarkAESGCMSeal4K   	   20000	     98671 ns/op	  41.51 MB/s
+	BenchmarkAESGCMOpen4K   	   20000	     98679 ns/op	  41.51 MB/s
+	BenchmarkOpensslGCMenc4K	   50000	     27542 ns/op	 148.72 MB/s
+	BenchmarkOpensslGCMdec4K	   50000	     27564 ns/op	 148.60 MB/s
+
+
+CPU Info
+========
+
+This is tested on a dual-core Intel Sandy Bridge Pentium G630 which does NOT have
+aes instructions ( https://en.wikipedia.org/wiki/AES_instruction_set )
+
+	$ cat /proc/cpuinfo | fold -s -w 80
+
+	processor	: 0
+	vendor_id	: GenuineIntel
+	cpu family	: 6
+	model		: 42
+	model name	: Intel(R) Pentium(R) CPU G630 @ 2.70GHz
+	stepping	: 7
+	microcode	: 0x29
+	cpu MHz		: 1617.574
+	cache size	: 3072 KB
+	physical id	: 0
+	siblings	: 2
+	core id		: 0
+	cpu cores	: 2
+	apicid		: 0
+	initial apicid	: 0
+	fpu		: yes
+	fpu_exception	: yes
+	cpuid level	: 13
+	wp		: yes
+	flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov 
+	pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm 
+	constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc 
+	aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 
+	xtpr pdcm pcid sse4_1 sse4_2 popcnt tsc_deadline_timer xsave lahf_lm arat epb 
+	pln pts dtherm tpr_shadow vnmi flexpriority ept vpid xsaveopt
+	bugs		:
+	bogomips	: 5387.68
+	clflush size	: 64
+	cache_alignment	: 64
+	address sizes	: 36 bits physical, 48 bits virtual
+	power management:
+	
+	[...]