A number of years ago I became interested in measuring the relative performance of various JVMs (and JPMs: Java Physical Machines). I chose to port the somewhat dated, but still useful, Dhrystone benchmark to Java in order to measure the integer computational performance along with the bulk memory operation performance of a few JVMs. I first published results from these benchmarks in Windows NT magazine a while back. Keep in mind that these measurements are rough, benchmarks are fairly meaningless unless many facets of 'performance' are considered, and these should all be taken with a large grain of salt. Still, they have proven pretty predictive for me over the last 8 or so years and if one looks at the CPU clock speeds, the results scale pretty well for like architectures. Of some note are the purely interpreted results versus the hotspot results. This data also includes a number of interesting embedded processors, since I work with embedded Java on a relatively frequent basis. I will add to this body of data from time to time as I can properly test.

Manuf	Proc/speed	Mem(mb)	JDK vers1	OS	jDhry/sec2	Vers3	Notes
Dell	Intel Core2 Quad Q6600 Quad Core 2.4Ghz	4096	1.5.0_14-b03 Mixed (Hotspot)	Suse 10.3 2.6.16.21-0.8-smp X86_64	10613207	NA	4096 L2 Cache
HP/Compaq	AMD Opteron 64 Dual Core 2.6Ghz	4096	1.5.0_11-b03 Mixed (Hotspot)	RHEL ES 2.6.9-42.0.3 X86_64	9278350	NA	1024 L2 Cache
HP nx6325	AMD Turion 64 Dual Core 2.0Ghz	2048	1.5.0_11-b03 Mixed (Hotspot)	SuSe ED 10.0 2.6.16.21-0.8-smp X86_64	6186842	NA	512 L2 Cache
HP/Compaq	AMD Athlon 64 2.4Ghz	1024	1.4.2_11-b06 Mixed (Hotspot)	Suse Linux 9.2 2.6.8-24.25 X86_64	4556962	NA	1024 L2 Cache
HP/Compaq	AMD Athlon 64 2.4Ghz	1024	1.5.0_10-b03 Mixed (Hotspot)	Windows XP Professional SP2	4176334	NA	1024 L2 Cache
HP/Compaq	AMD Athlon 64 800Mhz4	1024	1.4.2_11-b06 Mixed (Hotspot)	Suse Linux 9.2 2.6.8-24.25 X86_64	1438618	NA	1024 L2 Cache
ASUS	933Mhz PIII Dual Processor	1536	1.5.0_10 Mixed (Hotspot)	Windows Server 2003	905432	NA	133Mhz FSB 512K L2 Cache
Dell	900Mhz PIII	256	1.3.1-b24 Mixed (Hotspot)	Windows 2000 Server SP 4	972762	NA	133Mhz FSB 512K L2 Cache
Dell	550Mhz PIII	512	1.4.1_01 Mixed (Hotspot)	RH Linux 8.0 2.4.18-14 Kernel	775955	NA	100Mhz FSB 512K L2
Telenet	Dual 600MhzPIII Coppermine	1024	1.4.1_04 Mixed (Hotspot)	RH Linux 8.0 2.4.18-14 Kernel	775594	NA	100Mhz FSB 256KB L2 Cache
Apple	500Mhz G4	512	1.4.1_01-6.9.1 Mixed Mode	OS X (10.1, Jaguar)	582977	NA	100Mhz FSB 512K L2 Cache
Advantech	233Mhz PII MMX	128	1.3.1-b24 Mixed (Hotspot)	Windows NT 4.0 Server SP 6	198124	NA	Advantech PCM-5862
Dell	900Mhz PIII	256	1.3.1-b24 Interpreted (Classic)	Windows 2000 Server SP 4	35736	NA	133Mhz FSB 512K L2 Cache
Apple	500Mhz G4	512	1.4.1_01-6.9.1 Interpreted	OS X (10.1, Jaguar)	35058	NA	100Mhz FSB 512K L2 Cache
Telenet	Dual 600Mhz PIII CopperMine	1024	GNU jdkgcj 0.2.3 (Free Software Foundation)	RH Linux 8.0 2.4.18-14 Kernel	26112	NA	100Mhz FSB 256KB L2 Cache
Gateway	350Mhz PII	448	GNU jdkgcj 0.2.3 (Free Software Foundation)	RH Linux 8.0 2.4.18-14 Kernel	14359	NA	512K L2 Cache
Ajile/Systronix	AJ100 100Mhz Saje	1	1.3.1-b24 (compile only)	Ajile	10049	3.16.09	No addional drivers in build
Advantech	300Mhz PII MMX Cyrix	64	CrEme 3.25 (NSI)	Windows CE.net	6712	NA	Advantech Weblink 2059
Ajile/Systronix	AJ80 80Mhz JStep	1	1.3.1-b24 (compile only)	Ajile	1621	3.16.09	No additional drivers in build
Ajile/Systronix	AJ80 80Mhz JStep 2+	1	1.3.1-b24 (compile only)	Ajile	1621	3.16.09	No additional drivers in build
Imsys	SNAP CJip	8	1.3.1-b24 (compile only)	SNAP	270	0.16.0 Ms Piggy	In a STEP+ board
Dallas Semiconductor	DS80C390	0.5	1.3.1-b24 (compile only)	TINIOS 1.02S	36	1.02D	On a TILT-400 board
Dallas Semiconductor/Systronix	DS80C400/TSTIK	1	1.3.1-b24 (compile only)	TINIOS 1.12	36	1.12	On a TILT-400 board

¹For many embedded platforms this is just the compiler used (as indicated). While this is relevant to the quality of the bytecodes produced, the "Vers" field is more meaningful as this is the embedded runtime version.
²JDhrystones per second. The performance metric.
³This field is the version of the embedded Java runtime.
⁴2.4Ghz Processor running in power save mode.