SPECjbb2015 Report for jbb2015-20250818-01636 : 495489 max-jOPS ; 492271 critical-jOPS

SUT Description

Hardware hw_1
Name	Cisco UCS C245 M8
Vendor	Cisco Systems
Vendor URL	http://www.cisco.com/
Available	Dec-2024
Model	Cisco UCS C245 M8
Form Factor	2U
CPU Name	AMD EPYC 9555
CPU Characteristics	64 core, 3.2 GHz, 256 MB L3 Cache (Max Boost Clock up to 4.40 GHz)
Number of Systems	1
Nodes Per System	1
Chips Per System	2
Cores Per System	128
Cores Per Chip	64
Threads Per System	256
Threads Per Core	2
Version	C245M8.4.3.5c.0.1202241033
CPU Frequency (MHz)	3200
Primary Cache	32KB(I)+48KB(D) per core
Secondary Cache	1MB (I+D) per core
Tertiary Cache	256MB (I+D) on chip per chip
Other Cache	None
Disk	1 x 960GB SATA SSD
File System	XFS
Memory Amount (GB)	2048
# and size of DIMM(s)	16 x 128 GB
Memory Details	128GB 2 Rank DDR5 RDIMM 6400 MT/s, running at 6000 MT/s
# and type of Network Interface Cards (NICs)	2 x 40/100/200-Gbps NIC
Power Supply Quantity and Rating (W)	2 x 2300W
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	SUSE Linux Enterprise Server 15 SP6
Vendor	SUSE
Vendor URL	http://suse.com/
Version	Linux 6.4.0-150600.21-default
Available	June-2024
Bitness	64
Notes	None
Java Virtual Machine jvm_1
Name	Oracle Java SE 24.0.2
Vendor	Oracle Corporation
Vendor URL	http://oracle.com/
Version	Java HotSpot 64-Bit Server VM, version 24.0.2
Available	July-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_Composite_1 : Composite

SUT config_1 Configuration

Hardware
OS Images	os_Image_1(1)
Hardware Description	hw_1
Number of Systems	1
SW Environment	non-virtual
Tuning	BIOS Settings L1 Stream HW Prefetcher : Disabled L2 Stream HW Prefetcher : Disabled NUMA Nodes Per Socket : NPS2 xGMI Link Configuration : 4 xGMI Links 4 Link xGMI max speed : 32Gbps TDP Control : Manual Determinism Slider : Power Determinism Control : Manual TDP : 400
Notes	None

OS Image os_Image_1
JVM Instances	jvm_Composite_1(1)
OS Image Description	os_1
Tuning	echo 950000 > /proc/sys/kernel/sched_rt_runtime_us echo 900000 > /proc/sys/kernel/sched_latency_ns echo 40000 > /proc/sys/kernel/sched_migration_cost_ns echo 400000 > /proc/sys/kernel/sched_min_granularity_ns echo 400000 > /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	-Xms1420g -Xmx1420g -Xmn1390g -server -XX:+UseParallelGC -XX:+AlwaysPreTouch -XX:+UseLargePages -XX:LargePageSizeInBytes=2m -XX:MaxTenuringThreshold=5 -XX:-UseAdaptiveSizePolicy -XX:ParallelGCThreads=256 -XX:SurvivorRatio=120 -XX:TargetSurvivorRatio=95 -XX:+UseNUMA -XX:-UseAdaptiveNUMAChunkSizing -XX:+UseTransparentHugePages -XX:InlineSmallCode=11k -XX:TLABAllocationWeight=2 -XX:ThreadStackSize=140 -XX:AutoBoxCacheMax=32 -XX:OnStackReplacePercentage=100
Tuning	Used numactl to run on all available nodes numactl --cpunodebind=0-3 --interleave=0-3
Notes	None

max-jOPS and critical-jOPS Details

max-jOPS = jOPS passed before the First Failure
Pass/Fail	Pass	Pass	Pass	Fail	Fail
jOPS	482784	489136	495489	501841	508194

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	479607	495489	495489	495489	495489	492271

Last Success jOPS/First Failure jOPS for SLA points

	Percentile
	10-th	50-th	90-th	95-th	99-th	100-th
500us	235040 / 69877	6352 / 12705	- / 6352	- / 6352	- / 6352	- / 6352
1000us	476431 / 482784	317621 / 101639	38115 / 19057	38115 / 19057	12705 / 19057	- / 6352
5000us	495489 / -	495489 / -	482784 / 489136	457374 / 343031	215982 / 209630	82581 / 44467
10000us	495489 / -	495489 / -	495489 / -	495489 / -	476431 / 482784	171515 / 44467
25000us	495489 / -	495489 / -	495489 / -	495489 / -	495489 / -	209630 / 44467
50000us	495489 / -	495489 / -	495489 / -	495489 / -	495489 / -	222335 / 69877
75000us	495489 / -	495489 / -	495489 / -	495489 / -	495489 / -	355736 / 228687
100000us	495489 / -	495489 / -	495489 / -	495489 / -	495489 / -	355736 / 235040
200000us	495489 / -	495489 / -	495489 / -	495489 / -	495489 / -	387498 / 393850
500000us	495489 / -	495489 / -	495489 / -	495489 / -	495489 / -	482784 / 425612
1000000us	495489 / -	495489 / -	495489 / -	495489 / -	495489 / -	489136 / 495489

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
specjbb.controller.maxir.maxFailedPoints	3	1
specjbb.controller.rtcurve.warmup.step	0.1	0.2
specjbb.customerDriver.threads	64	{probe=72, saturate=128}
specjbb.forkjoin.workers	256	{Tier1=90, Tier2=1, Tier3=12}
specjbb.group.count	1	3
specjbb.heartbeat.period	10000	50000
specjbb.heartbeat.threshold	100000	500000

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 635242 IR

High-bound (settled) is 529937 IR

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

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

Cisco Systems Cisco UCS C245 M8	495489 SPECjbb2015-Composite max-jOPS 492271 SPECjbb2015-Composite critical-jOPS
Tested by: Cisco Systems	Test Sponsor: Cisco Systems	Test location: San Jose, CA	Test date: August 17, 2025
SPEC license #: 9019	Hardware Availability: Jun-2024	Software Availability: Apr-2024	Publication: Thu Sep 4 11:45:56 EDT 2025


SPECjbb2015-Composite: Single JVM/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