SPECjbb2015 Report for jbb2015-20260527-01712 : 464765 max-jOPS ; 357334 critical-jOPS

SUT Description

Hardware hw_1
Name	Amazon EC2 m8g.metal-48xl
Vendor	Amazon Web Services (AWS)
Vendor URL	https://aws.amazon.com/ec2/instance-types/m8g/
Available	Apr-2025
Model	m8g.metal-48xl
Form Factor	None
CPU Name	AWS Graviton4
CPU Characteristics	96 cores, 2.7 GHz, 36MB L3 cache
Number of Systems	1
Nodes Per System	1
Chips Per System	2
Cores Per System	192
Cores Per Chip	96
Threads Per System	192
Threads Per Core	1
Version	1.0
CPU Frequency (MHz)	2700
Primary Cache	64KB(I)+64KB(D) per core
Secondary Cache	2MB (I+D) per core
Tertiary Cache	36MB (I+D) on chip per chip
Other Cache	None
Disk	1x 500GB EBS
File System	ext4
Memory Amount (GB)	768
# and size of DIMM(s)	24 x 32GB
Memory Details	DDR5 5200 MT/s
# and type of Network Interface Cards (NICs)	50 Gbps
Power Supply Quantity and Rating (W)	None
Other Hardware	None
Cabinet/Housing/Enclosure	None
Shared Description	None
Shared Comment	None
Notes	The submitter confirms that the benchmark configuration and execution comply with the applicable Terms of Service and usage policies of the hardware, software, and service providers on which the system under test was deployed
Other Hardware network_1
Name	None
Vendor	None
Vendor URL	None
Version	None
Available	None
Bitness	None
Notes	None

Operating System os_1
Name	Ubuntu 24.04.4 LTS
Vendor	Ubuntu
Vendor URL	https://ubuntu.com/
Version	6.17.0-1012-aws
Available	Feb-2026
Bitness	64
Notes	None
Java Virtual Machine jvm_1
Name	Oracle Java SE 25.0.2
Vendor	Oracle
Vendor URL	http://oracle.com/
Version	Java HotSpot 64-bit Server VM, version 25.0.2
Available	Jan-2026
Bitness	64
Notes	None
Other Software other_1
Name	None
Vendor	None
Vendor URL	None
Version	None
Available	None
Bitness	None
Notes	None

Topology

SUT
- Hardware config_1
  - OS Image os_Image_1
    - JVM jvm_Ctr_1 : Controller
    - JVM jvm_Backend_1 : Backend
    - JVM jvm_TxInjector_1 : TxInjector

SUT config_1 Configuration

Hardware
OS Images	os_Image_1(1)
Hardware Description	hw_1
Number of Systems	1
SW Environment	non-virtual
Tuning	None
Notes	None

OS Image os_Image_1
JVM Instances	jvm_Ctr_1(1), jvm_Backend_1(4), jvm_TxInjector_1(4)
OS Image Description	os_1
Tuning	tuned-adm profile throughput-performance ulimit -n 1024000 echo 960000 > /proc/sys/kernel/sched_rt_runtime_us echo 900000 > /proc/sys/kernel/sched_base_slice_ns echo 40000 > /proc/sys/kernel/sched_migration_cost_ns echo 9000 > /proc/sys/kernel/sched_nr_migrate echo NO_WAKEUP_PREEMPTION > /sys/kernel/debug/sched/features echo 10000 > /proc/sys/vm/dirty_expire_centisecs echo 1500 > /proc/sys/vm/dirty_writeback_centisecs echo 40 > /proc/sys/vm/dirty_ratio echo 10 > /proc/sys/vm/dirty_background_ratio echo 10 > /proc/sys/vm/swappiness echo 0 > /proc/sys/vm/numa_stat echo 0 > /proc/sys/kernel/numa_balancing echo always > /sys/kernel/mm/transparent_hugepage/enabled echo always > /sys/kernel/mm/transparent_hugepage/defrag
Notes	None
JVM Instance jvm_Ctr_1
Parts of Benchmark	Controller
JVM Instance Description	jvm_1
Command Line	-Xms2g -Xmx2g -Xmn1536m -XX:+UseParallelGC -XX:ParallelGCThreads=2 -XX:CICompilerCount=4
Tuning	Used numactl to interleave memory on all CPUs numactl --interleave=all
Notes	None
JVM Instance jvm_Backend_1
Parts of Benchmark	Backend
JVM Instance Description	jvm_1
Command Line	-Xms170g -Xmx170g -Xmn165g -XX:+UseLargePages -XX:+UseParallelGC -XX:LargePageSizeInBytes=2m -XX:-UseAdaptiveSizePolicy -XX:SurvivorRatio=28 -XX:+UseTransparentHugePages -XX:ParallelGCThreads=48 -XX:TargetSurvivorRatio=95 -XX:MaxTenuringThreshold=1 -XX:+AlwaysPreTouch -XX:InlineSmallCode=13k
Tuning	Used numactl to affinitize each Backend JVM to 48 Core/ 48 Threads Group1: numactl --physcpubind=0-47 --localalloc Group2: numactl --physcpubind=48-95 --localalloc Group3: numactl --physcpubind=96-143 --localalloc Group4: numactl --physcpubind=144-191 --localalloc
Notes	None
JVM Instance jvm_TxInjector_1
Parts of Benchmark	TxInjector
JVM Instance Description	jvm_1
Command Line	-Xms2g -Xmx2g -Xmn1536m -XX:+UseParallelGC -XX:ParallelGCThreads=2 -XX:CICompilerCount=4
Tuning	Used numactl to affinitize each TxInjector JVM to 48 Core/ 48 Threads Group1: numactl --physcpubind=0-47 --localalloc Group2: numactl --physcpubind=48-95 --localalloc Group3: numactl --physcpubind=96-143 --localalloc Group4: numactl --physcpubind=144-191 --localalloc
Notes	None

max-jOPS and critical-jOPS Details

max-jOPS = jOPS passed before the First Failure
Pass/Fail	Pass	Pass	Fail	Fail	Fail
jOPS	458882	464765	470648	476531	482414

critical-jOPS = Geomean ( jOPS @ 10000; 25000; 50000; 75000; 100000; SLAs )
Response time percentile is 99-th
SLA (us)	10000	25000	50000	75000	100000	Geomean
jOPS	291213	360830	377498	383242	383242	357334

Last Success jOPS/First Failure jOPS for SLA points

	Percentile
	10-th	50-th	90-th	95-th	99-th	100-th
500us	11766 / 17649	5883 / 11766	- / 5883	- / 5883	- / 5883	- / 5883
1000us	382401 / 388285	17649 / 23532	11766 / 17649	5883 / 11766	5883 / 11766	- / 5883
5000us	435349 / 441232	400051 / 405934	347103 / 352986	335337 / 341220	147077 / 152961	29415 / 23532
10000us	441232 / 447116	411817 / 417700	370635 / 376518	347103 / 352986	288272 / 294155	29415 / 23532
25000us	441232 / 447116	423583 / 429466	388285 / 394168	388285 / 352986	364752 / 352986	70597 / 64714
50000us	447116 / 452999	435349 / 429466	411817 / 400051	388285 / 394168	382401 / 352986	235324 / 158844
75000us	447116 / 452999	435349 / 429466	411817 / 417700	388285 / 394168	388285 / 352986	288272 / 282389
100000us	447116 / 452999	435349 / 429466	411817 / 417700	411817 / 394168	388285 / 352986	329454 / 323570
200000us	447116 / 452999	441232 / 447116	423583 / 429466	417700 / 423583	388285 / 352986	382401 / 352986
500000us	452999 / 458882	447116 / 452999	435349 / 429466	435349 / 429466	423583 / 429466	388285 / 352986
1000000us	464765 / -	452999 / 458882	447116 / 452999	447116 / 452999	441232 / 447116	417700 / 394168

Number of probes

Request Mix Accuracy

Note

(Actual % in the Mix - Expected % in the Mix) must be within:

'Main Tx' limit of +/-5.0% for the requests whose expected % in the mix is >= 10.0%

'Minor Tx' limit of +/-1.0% for the requests whose expected % in the mix is < 10.0%

Rate of Non-Critical Failures

There were no non-critical failures in Response Time curve building

Delay between performance status pings during RT Curve (Response-Throughput Curve)

IR/PR Accuracy

Run Properties

This section lists properties only set by user

Property Name	Default	Controller	Group1.Backend.beJVM	Group1.TxInjector.txiJVM1	Group2.Backend.beJVM	Group2.TxInjector.txiJVM1	Group3.Backend.beJVM	Group3.TxInjector.txiJVM1	Group4.Backend.beJVM	Group4.TxInjector.txiJVM1
specjbb.comm.connect.selector.runner.count	0	4	0	0	0	0	0	0	0	0
specjbb.controller.handshake.period	5000	20000
specjbb.controller.handshake.timeout	600000	900000
specjbb.forkjoin.workers	192	{Tier1=120, Tier2=1, Tier3=20}
specjbb.group.count	1	4
specjbb.heartbeat.period	10000	2000
specjbb.heartbeat.threshold	100000	9000000
specjbb.mapreducer.pool.size	192	4
specjbb.txi.pergroup.count	1	1

View table in csv format

Validation Details

Validation Reports


Level: COMPLIANCE
Check	Agent	Result
Check properties on compliance	All	PASSED


Level: CORRECTNESS
Check	Agent	Result
Compare SM and HQ Inventory	All	PASSED

Other Checks

High-bound (max attempted) is 588310 IR

High-bound (settled) is 494467 IR

http://www.spec.org - info@spec.org

SPECjbb2015 Version: [SPECjbb2015 1.04, Feb 16, 2024]

Amazon EC2 m8g.metal-48xl	464765 SPECjbb2015-MultiJVM max-jOPS 357334 SPECjbb2015-MultiJVM critical-jOPS
Tested by: Infobell IT Solutions Pvt. Ltd.	Test Sponsor: Infobell IT Solutions Pvt. Ltd.	Test location: Bengaluru,India	Test date: May 22, 2026
SPEC license #: 6723	Hardware Availability: Apr-2025	Software Availability: Feb-2026	Publication: Thu Jun 25 13:02:27 EDT 2026


SPECjbb2015-MultiJVM: Multiple JVMs/Single Host (# of groups: 4) Overall SUT Description SUT Description max-jOPS and critical-jOPS Details Number of probes Request Mix Accuracy Rate Of Non-Critical Failures Delay between performance status pings IR/PR Accuracy Topology SUT Configuration Properties Validation Details Link to Full Disclosure	Overall Throughput RT curve