SPECjbb2015 Report for jbb2015-20260325-01673 : 366223 max-jOPS ; 222655 critical-jOPS

SUT Description

Hardware hw_1
Name	Amazon EC2 m8i.48xlarge
Vendor	Amazon Web Services (AWS)
Vendor URL	https://aws.amazon.com/ec2/instance-types/m8i/
Available	Dec-2025
Model	m8i.48xlarge
Form Factor	None
CPU Name	Intel(R) Xeon(R) 6975P-C
CPU Characteristics	96 core, 3.9GHz, 480MB L3 Cache
Number of Systems	1
Nodes Per System	1
Chips Per System	1
Cores Per System	96
Cores Per Chip	96
Threads Per System	192
Threads Per Core	2
Version	None
CPU Frequency (MHz)	3900
Primary Cache	64KB(I) + 48KB(D) per core
Secondary Cache	2MB (I+D) per core
Tertiary Cache	480MB (I+D) on chip per chip
Other Cache	None
Disk	1x 500GB EBS with 60 Gbps network bandwidth
File System	xfs
Memory Amount (GB)	768
# and size of DIMM(s)	3 x 256GB
Memory Details	DDR5 7200 MT/s
# and type of Network Interface Cards (NICs)	60 Gbps
Power Supply Quantity and Rating (W)	None
Other Hardware	None
Cabinet/Housing/Enclosure	None
Shared Description	None
Shared Comment	None
Notes	None
Other Hardware network_1
Name	None
Vendor	None
Vendor URL	None
Version	None
Available	None
Bitness	None
Notes	None

Operating System os_1
Name	Red Hat Enterprise Linux 9.6 (Plow)
Vendor	RHEL
Vendor URL	https://www.redhat.com/
Version	Linux 5.14.0-570.72.1.el9_6.x86_64
Available	Sept-2025
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 950000 > /proc/sys/kernel/sched_rt_runtime_us echo 20000000 > /proc/sys/kernel/sched_latency_ns echo 40000 > /proc/sys/kernel/sched_migration_cost_ns echo 3000000 > /proc/sys/kernel/sched_min_granularity_ns echo 40000 > /proc/sys/kernel/sched_wakeup_granularity_ns echo 128 > /proc/sys/kernel/sched_nr_migrate 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/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:+UseLargePages
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	-Xms31744m -Xmx31744m -Xmn29696m -XX:+UseParallelGC -XX:+UseLargePages -XX:+AlwaysPreTouch -XX:-UseAdaptiveSizePolicy -XX:MaxTenuringThreshold=15 -XX:InlineSmallCode=10k -verbose:gc -XX:-UseCountedLoopSafepoints -XX:LoopUnrollLimit=20 -server -XX:TargetSurvivorRatio=95 -XX:SurvivorRatio=28 -XX:LargePageSizeInBytes=1G -XX:+UseTransparentHugePages
Tuning	Used numactl to affinitize each Backend JVM to 32 Core/ 64 Threads Group1: --cpunodebind=0 --localalloc Group2: --cpunodebind=1 --localalloc Group3: --cpunodebind=2 --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:+UseLargePages -XX:LargePageSizeInBytes=1G
Tuning	Used numactl to affinitize each Injector JVM to 32 Core/ 64 Threads Group1: --cpunodebind=0 --localalloc Group2: --cpunodebind=1 --localalloc Group3: --cpunodebind=2 --localalloc
Notes	None

max-jOPS and critical-jOPS Details

max-jOPS = jOPS passed before the First Failure
Pass/Fail	Pass	Pass	Pass	Fail	Fail
jOPS	357398	361810	366223	370635	375047

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	134576	174286	244884	297831	319893	222655

Last Success jOPS/First Failure jOPS for SLA points

	Percentile
	10-th	50-th	90-th	95-th	99-th	100-th
500us	- / 4412	- / 4412	- / 4412	- / 4412	- / 4412	- / 4412
1000us	366223 / -	- / 4412	- / 4412	- / 4412	- / 4412	- / 4412
5000us	366223 / -	366223 / -	282388 / 238265	211791 / 176493	110308 / 114720	- / 4412
10000us	366223 / -	366223 / -	304450 / 308862	255915 / 260327	132370 / 136782	4412 / 8825
25000us	366223 / -	366223 / -	335336 / 339749	291213 / 295625	172080 / 176493	4412 / 8825
50000us	366223 / -	366223 / -	339749 / 344161	317687 / 322099	242678 / 247090	92659 / 79422
75000us	366223 / -	366223 / -	348573 / 352986	335336 / 339749	295625 / 300038	189730 / 101483
100000us	366223 / -	366223 / -	357398 / 361810	348573 / 352986	317687 / 322099	194142 / 163256
200000us	366223 / -	366223 / -	366223 / -	366223 / -	352986 / 357398	295625 / 269152
500000us	366223 / -	366223 / -	366223 / -	366223 / -	366223 / -	348573 / 352986
1000000us	366223 / -	366223 / -	366223 / -	366223 / -	366223 / -	366223 / -

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
specjbb.comm.connect.client.pool.size	256	232	256	256	256	256	256	256
specjbb.comm.connect.selector.runner.count	0	1	0	0	0	0	0	0
specjbb.comm.connect.timeouts.connect	60000	600000	60000	60000	60000	60000	60000	60000
specjbb.comm.connect.timeouts.read	60000	600000	60000	60000	60000	60000	60000	60000
specjbb.comm.connect.timeouts.write	60000	600000	60000	60000	60000	60000	60000	60000
specjbb.comm.connect.worker.pool.max	256	81	256	256	256	256	256	256
specjbb.comm.connect.worker.pool.min	1	24	1	1	1	1	1	1
specjbb.controller.maxir.maxFailedPoints	3	1
specjbb.controller.rtcurve.warmup.step	0.1	0.2
specjbb.customerDriver.threads	64	{probe=69, saturate=85, service=75}
specjbb.forkjoin.workers	192	{Tier1=344, Tier2=16, Tier3=38}
specjbb.group.count	1	3
specjbb.mapreducer.pool.size	192	223
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 441232 IR

High-bound (settled) is 391592 IR

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

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

Amazon EC2 m8i.48xlarge	366223 SPECjbb2015-MultiJVM max-jOPS 222655 SPECjbb2015-MultiJVM critical-jOPS
Tested by: Infobell IT Solutions Pvt. Ltd.	Test Sponsor: Infobell IT Solutions Pvt. Ltd.	Test location: Bengaluru,India	Test date: March 18, 2026
SPEC license #: 6723	Hardware Availability: Dec-2025	Software Availability: Jan-2026	Publication: Thu Apr 16 11:48:03 EDT 2026


SPECjbb2015-MultiJVM: Multiple JVMs/Single Host (# of groups: 3) 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