SPECjbb2015
Copyright © 2015-2026 Standard Performance Evaluation Corporation
Amazon EC2 m8a.metal-24xl 334561 SPECjbb2015-Composite max-jOPS
318280 SPECjbb2015-Composite critical-jOPS
Tested by: Infobell IT Solutions Pvt. Ltd. Test Sponsor: Infobell IT Solutions Pvt. Ltd. Test location: Bengaluru,India Test date: November 26, 2025
SPEC license #: 6723 Hardware Availability: October-2025 Software Availability: October-2025 Publication: Thu Jan 15 15:46:05 EST 2026
Benchmark Results Summary
 
SPECjbb2015-Composite: Single JVM/Single Host
(# of groups: 2)
Overall Throughput RT curve
Overall Throughput RT curve
Overall SUT (System Under Test) Description
VendorAmazon Web Services (AWS)
Vendor URLhttps://aws.amazon.com/ec2/instance-types/m8a/
System SourceSingle Supplier
System DesignationServer Rack
Total Systems1
All SUT Systems IdenticalYES
Total Nodes1
All Nodes IdenticalYES
Nodes Per System1
Total Chips1
Total Cores96
Total Threads96
Total Memory Amount (GB)384
Total OS Images1
SW EnvironmentNon-virtual
  
SUT Description
Hardware hw_1
NameAmazon EC2 m8a.metal-24xl
VendorAmazon Web Services (AWS)
Vendor URLhttps://aws.amazon.com/ec2/instance-types/m8a/
AvailableOctober-2025
Modelm8a.metal-24xl
Form FactorNone
CPU NameAMD EPYC 9R45 96-Core Processor (Max frequency 4.5 GHz)
CPU Characteristics96 core, 2.6 Ghz, 384MB L3 Cache
Number of Systems1
Nodes Per System1
Chips Per System1
Cores Per System96
Cores Per Chip96
Threads Per System96
Threads Per Core1
Version1.0
CPU Frequency (MHz)2600
Primary Cache32KB(I) + 48KB(D) per core
Secondary Cache1MB (I+D) per core
Tertiary Cache384MB (I+D) on chip per chip
Other CacheNone
Disk1x 500GB NVMe PCIe Gen5.0
File Systemxfs
Memory Amount (GB)384
# and size of DIMM(s)1 x 384GB
Memory DetailsDDR5 6400 MT/s
# and type of Network Interface Cards (NICs)None
Power Supply Quantity and Rating (W)None
Other HardwareNone
Cabinet/Housing/EnclosureNone
Shared DescriptionNone
Shared CommentNone
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
NameNone
VendorNone
Vendor URLNone
VersionNone
AvailableNone
BitnessNone
NotesNone
Operating System os_1
NameRed Hat Enterprise Linux 9.6 (Plow)
VendorRHEL
Vendor URLhttps://www.redhat.com/
Version5.14.0-570.41.1.el9_6.x86_64
AvailableMay-2025
Bitness64
NotesNone
Java Virtual Machine jvm_1
NameOracle Java SE 25.0.1
VendorOracle
Vendor URLhttp://oracle.com/
VersionJava HotSpot 64-bit Server VM, version 25.0.1
AvailableOctober-2025
Bitness64
NotesNone
Other Software other_1
NameNone
VendorNone
Vendor URLNone
VersionNone
AvailableNone
BitnessNone
NotesNone
Topology
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_Composite_1(1)
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 200000 > /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 1 > /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_Composite_1
Parts of Benchmark Composite
JVM Instance Description jvm_1
Command Line

-Xms350g -Xmx350g -Xmn345g -server -XX:+UseParallelGC -XX:+AlwaysPreTouch -XX:+UseLargePages -XX:LargePageSizeInBytes=2m -XX:MaxTenuringThreshold=15 -XX:-UseAdaptiveSizePolicy -XX:ParallelGCThreads=96 -XX:SurvivorRatio=80 -XX:TargetSurvivorRatio=95 -XX:+UseNUMA -XX:+UseTransparentHugePages -XX:InlineSmallCode=11k -XX:TLABAllocationWeight=2 -XX:ThreadStackSize=200 -XX:AutoBoxCacheMax=32 -XX:OnStackReplacePercentage=35
Tuning None
Notes None
max-jOPS and critical-jOPS Details
max-jOPS = jOPS passed before the First Failure
Pass/Fail Pass Pass Pass Fail Fail
jOPS 326091 330326 334561 338796 343031
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 281624 319738 328208 332443 332443 318280
Last Success jOPS/First Failure jOPS for SLA points
  Percentile
  10-th 50-th 90-th 95-th 99-th 100-th
500us 262567 / 4235 - / 4235 - / 4235 - / 4235 - / 4235 - / 4235
1000us 317621 / 321856 249862 / 4235 - / 4235 - / 4235 - / 4235 - / 4235
5000us 334561 / - 330326 / 334561 313386 / 317621 292212 / 190573 118579 / 122814 16940 / 21175
10000us 334561 / - 334561 / - 321856 / 326091 317621 / 321856 279507 / 283742 76229 / 21175
25000us 334561 / - 334561 / - 330326 / 334561 330326 / 334561 317621 / 321856 76229 / 21175
50000us 334561 / - 334561 / - 334561 / - 334561 / - 326091 / 330326 76229 / 80464
75000us 334561 / - 334561 / - 334561 / - 334561 / - 330326 / 334561 182103 / 143988
100000us 334561 / - 334561 / - 334561 / - 334561 / - 330326 / 334561 228687 / 194808
200000us 334561 / - 334561 / - 334561 / - 334561 / - 334561 / - 266802 / 245627
500000us 334561 / - 334561 / - 334561 / - 334561 / - 334561 / - 309151 / 304916
1000000us 334561 / - 334561 / - 334561 / - 334561 / - 334561 / - 321856 / 326091
Number of probes
Probes jOPS / Total jOPS
Request Mix Accuracy
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)
Delay between status pings
IR/PR Accuracy
IR/PR Accuracy
Run Properties
This section lists properties only set by user
Property Name Default Controller
specjbb.comm.connect.selector.runner.count 0 12
specjbb.controller.maxir.maxFailedPoints 3 1
specjbb.controller.rtcurve.warmup.step 0.1 0.2
specjbb.customerDriver.threads 64 {probe=90, saturate=140}
specjbb.forkjoin.workers 96 {Tier1=48, Tier2=1, Tier3=14}
specjbb.group.count 1 2
specjbb.heartbeat.period 10000 50000
specjbb.heartbeat.threshold 100000 500000
specjbb.mapreducer.pool.size 96 4
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 423495 IR
High-bound (settled) is 359336 IR
Copyright © 2015-2026 Standard Performance Evaluation Corporation
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SPECjbb2015 Version: [SPECjbb2015 1.04, Feb 16, 2024]