SPECjbb2015 Report for jbb2015-20251218-01666 : 353793 max-jOPS ; 121063 critical-jOPS

SUT Description

Hardware hw_1
Name	Amazon EC2 m8a.metal-24xl
Vendor	Amazon Web Services (AWS)
Vendor URL	https://aws.amazon.com/ec2/instance-types/m8a/
Available	October-2025
Model	m8a.metal-24xl
Form Factor	None
CPU Name	AMD EPYC 9R45 96-Core Processor (Max frequency 4.5 GHz)
CPU Characteristics	96 core, 2.6 Ghz, 384MB 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	96
Threads Per Core	1
Version	1.0
CPU Frequency (MHz)	2600
Primary Cache	32KB(I) + 48KB(D) per core
Secondary Cache	1MB (I+D) per core
Tertiary Cache	384MB (I+D) on chip per chip
Other Cache	None
Disk	1x 500GB NVMe PCIe Gen5.0
File System	xfs
Memory Amount (GB)	384
# and size of DIMM(s)	1 x 384GB
Memory Details	DDR5 6400 MT/s
# and type of Network Interface Cards (NICs)	None
Power Supply Quantity and Rating (W)	None
Other Hardware	None
Cabinet/Housing/Enclosure	None
Shared Description	None
Shared Comment	None
Notes	NA: The test sponsor attests, as of date of publication, that CVE-2017-5754 (Meltdown) is mitigated in the system as tested and documented. Yes: The test sponsor attests, as of date of publication, that CVE-2017-5753 (Spectre variant 1) is mitigated in the system as tested and documented. Yes: The test sponsor attests, as of date of publication, that CVE-2017-5715 (Spectre variant 2) is mitigated in the system as tested and documented.
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	5.14.0-570.41.1.el9_6.x86_64
Available	May-2025
Bitness	64
Notes	None
Java Virtual Machine jvm_1
Name	Oracle Java SE 25.0.1
Vendor	Oracle
Vendor URL	http://oracle.com/
Version	Java HotSpot 64-bit Server VM, version 25.0.1
Available	October-2025
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(12), jvm_TxInjector_1(12)
OS Image Description	os_1
Tuning	tuned-adm profile throughput-performance ulimit -n 1024000 echo 96000 > /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 810000000 > /proc/sys/kernel/sched_min_granularity_ns echo 200000000 > /proc/sys/kernel/sched_wakeup_granularity_ns echo 9000 > /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 0 > /proc/sys/vm/numa_stat 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=1 -XX:CICompilerCount=2
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	-Xms26g -Xmx26g -Xmn24g -XX:AllocatePrefetchInstr=2 -XX:+UseParallelGC -XX:ParallelGCThreads=8 -XX:LargePageSizeInBytes=2m -XX:-UseAdaptiveSizePolicy -XX:+AlwaysPreTouch -XX:+UseLargePages -XX:SurvivorRatio=12 -XX:TargetSurvivorRatio=95 -XX:MaxTenuringThreshold=15 -XX:InlineSmallCode=11k -XX:MaxGCPauseMillis=100 -XX:LoopUnrollLimit=200 -XX:+UseTransparentHugePages -XX:TLABAllocationWeight=2 -XX:ThreadStackSize=140 -XX:CompileThresholdScaling=120 -XX:CICompilerCount=4 -XX:AutoBoxCacheMax=32 -XX:OnStackReplacePercentage=100 -XX:TLABSize=1m -XX:MinTLABSize=1m -XX:-ResizeTLAB -XX:TLABWasteTargetPercent=1 -XX:TLABWasteIncrement=1 -XX:YoungPLABSize=1m -XX:OldPLABSize=1m
Tuning	Used numactl to affinitize each Backend JVM to 8 Core/ 8 Threads Group1: --physcpubind=0-7 --localalloc Group2: --physcpubind=8-15 --localalloc Group3: --physcpubind=16-23 --localalloc Group4: --physcpubind=24-31 --localalloc Group5: --physcpubind=32-39 --localalloc Group6: --physcpubind=40-47 --localalloc Group7: --physcpubind=48-55 --localalloc Group8: --physcpubind=56-63 --localalloc Group9: --physcpubind=64-71 --localalloc Group10: --physcpubind=72-79 --localalloc Group11: --physcpubind=80-87 --localalloc Group12: --physcpubind=88-95 --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=1 -XX:CICompilerCount=2
Tuning	Used numactl to affinitize each Backend JVM to 8 Core/ 8 Threads Group1: --physcpubind=0-7 --localalloc Group2: --physcpubind=8-15 --localalloc Group3: --physcpubind=16-23 --localalloc Group4: --physcpubind=24-31 --localalloc Group5: --physcpubind=32-39 --localalloc Group6: --physcpubind=40-47 --localalloc Group7: --physcpubind=48-55 --localalloc Group8: --physcpubind=56-63 --localalloc Group9: --physcpubind=64-71 --localalloc Group10: --physcpubind=72-79 --localalloc Group11: --physcpubind=80-87 --localalloc Group12: --physcpubind=88-95 --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	345565	349679	353793	357907	362021

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	76107	103434	124238	149274	178130	121063

Last Success jOPS/First Failure jOPS for SLA points

	Percentile
	10-th	50-th	90-th	95-th	99-th	100-th
500us	12342 / 16455	4114 / 8228	- / 4114	- / 4114	- / 4114	- / 4114
1000us	57594 / 61708	16455 / 20569	8228 / 12342	8228 / 12342	4114 / 8228	- / 4114
5000us	213921 / 218035	94619 / 98733	65822 / 69936	57594 / 61708	45253 / 49366	4114 / 8228
10000us	226263 / 230377	176896 / 181010	119302 / 123416	106961 / 111074	74050 / 78164	16455 / 12342
25000us	238604 / 242718	226263 / 230377	193352 / 197466	172783 / 168669	106961 / 82277	16455 / 12342
50000us	238604 / 242718	230377 / 234491	209807 / 213921	193352 / 197466	127530 / 111074	16455 / 12342
75000us	242718 / 246832	234491 / 238604	218035 / 222149	205693 / 209807	156327 / 131644	16455 / 12342
100000us	246832 / 250946	238604 / 242718	226263 / 230377	218035 / 222149	189238 / 152213	16455 / 12342
200000us	287971 / 267402	250946 / 255060	238604 / 242718	238604 / 242718	230377 / 197466	123416 / 28797
500000us	345565 / 349679	287971 / 292085	271515 / 275629	267402 / 271515	259174 / 255060	230377 / 82277
1000000us	353793 / -	349679 / 353793	337337 / 341451	329110 / 333223	316768 / 320882	250946 / 226263

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	Group10.Backend.beJVM	Group10.TxInjector.txiJVM1	Group11.Backend.beJVM	Group11.TxInjector.txiJVM1	Group12.Backend.beJVM	Group12.TxInjector.txiJVM1	Group2.Backend.beJVM	Group2.TxInjector.txiJVM1	Group3.Backend.beJVM	Group3.TxInjector.txiJVM1	Group4.Backend.beJVM	Group4.TxInjector.txiJVM1	Group5.Backend.beJVM	Group5.TxInjector.txiJVM1	Group6.Backend.beJVM	Group6.TxInjector.txiJVM1	Group7.Backend.beJVM	Group7.TxInjector.txiJVM1	Group8.Backend.beJVM	Group8.TxInjector.txiJVM1	Group9.Backend.beJVM	Group9.TxInjector.txiJVM1
specjbb.comm.connect.client.pool.size	256	150	256	170	256	170	256	170	256	170	256	170	256	170	256	170	256	170	256	170	256	170	256	170	256	170
specjbb.comm.connect.selector.runner.count	0	10	20	5	20	5	20	5	20	5	20	5	20	5	20	5	20	5	20	5	20	5	20	5	20	5
specjbb.comm.connect.timeouts.connect	60000	900000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000
specjbb.comm.connect.timeouts.read	60000	800000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000
specjbb.comm.connect.timeouts.write	60000	800000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000	60000
specjbb.comm.connect.worker.pool.max	256	150	256	200	256	200	256	200	256	200	256	200	256	200	256	200	256	200	256	200	256	200	256	200	256	200
specjbb.comm.connect.worker.pool.min	1	16	32		32		32		32		32		32		32		32		32		32		32		32
specjbb.controller.maxir.maxFailedPoints	3	1
specjbb.customerDriver.threads	64	{probe=130, saturate=300, service=160}
specjbb.forkjoin.workers	96	{Tier1=650, Tier2=35, Tier3=120}
specjbb.group.count	1	12
specjbb.mapreducer.pool.size	96	10
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 411387 IR

High-bound (settled) is 368791 IR

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

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

Amazon EC2 m8a.metal-24xl	353793 SPECjbb2015-MultiJVM max-jOPS 121063 SPECjbb2015-MultiJVM critical-jOPS
Tested by: Infobell IT Solutions Pvt. Ltd.	Test Sponsor: Infobell IT Solutions Pvt. Ltd.	Test location: Bengaluru,India	Test date: November 25, 2025
SPEC license #: 6723	Hardware Availability: October-2025	Software Availability: October-2025	Publication: Thu Jan 15 15:46:05 EST 2026


SPECjbb2015-MultiJVM: Multiple JVMs/Single Host (# of groups: 12) 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