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[global]
debug paxos = 0/0
debug journal = 0/0
debug mds_balancer = 0/0
debug mds = 0/0
mon_pg_warn_max_per_osd = 10000
debug lockdep = 0/0
debug auth = 0/0
debug mds_log = 0/0
debug mon = 0/0
debug perfcounter = 0/0
debug monc = 0/0
debug rbd = 0/0
debug throttle = 0/0
debug mds_migrator = 0/0
debug client = 0/0
debug rgw = 0/0
debug finisher = 0/0
debug journaler = 0/0
debug ms = 0/0
debug hadoop = 0/0
debug mds_locker = 0/0
debug tp = 0/0
debug context = 0/0
debug osd = 0/0
debug bluestore = 0/0
debug objclass = 0/0
debug objecter = 0/0
osd_mount_options_xfs =
rw,noatime,inode64,logbsize=256k,delaylog
osd_mkfs_type = xfs
filestore_queue_max_ops = 5000
osd_client_message_size_cap = 0
objecter_infilght_op_bytes = 1048576000
ms_dispatch_throttle_bytes = 1048576000
osd_mkfs_options_xfs = -f -i size=2048
filestore_wbthrottle_enable = True
filestore_fd_cache_shards = 64
objecter_inflight_ops = 1024000
filestore_queue_committing_max_bytes = 1048576000
osd_op_num_threads_per_shard = 2
filestore_queue_max_bytes = 10485760000
osd_op_threads = 32
osd_op_num_shards = 16
filestore_max_sync_interval = 10
filestore_op_threads = 16
osd_pg_object_context_cache_count = 10240
journal_queue_max_ops = 3000
journal_queue_max_bytes = 10485760000
journal_max_write_entries = 1000
filestore_queue_committing_max_ops = 5000
journal_max_write_bytes = 1048576000
osd_enable_op_tracker = False
filestore_fd_cache_size = 10240
osd_client_message_cap = 0
Ceph* All-Flash Tunings
debug log = 0
debug filer = 0/0
debug mds_log_expire = 0/0
debug crush = 0/0
debug optracker = 0/0
debug rados = 0/0
debug heartbeatmap = 0/0
debug buffer = 0/0
debug asok = 0/0
debug objectcacher = 0/0
debug filestore = 0/0
debug timer = 0/0
mutex_perf_counter = True
rbd_cache = False
ms_crc_header = False
ms_crc_data = False
osd_pool_default_pgp_num = 32768
osd_pool_default_size = 2
rbd_op_threads = 4
Ceph*x require signatures = False
Ceph*x sign messages = False
osd_pool_default_pg_num = 32768
throttler_perf_counter = False
auth_service_required = none
auth_cluster_required = none
auth_client_required = none](https://image.slidesharecdn.com/07deliveringcost-effectivehighperformancecephclusterwithtodaysnvmessdandtomorrowsinteloptanetechnolo-160830052640/75/Ceph-Day-Seoul-Delivering-Cost-Effective-High-Performance-Ceph-cluster-38-2048.jpg)
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Ceph Day Seoul - Delivering Cost Effective, High Performance Ceph cluster
Jack Zhang is a Senior Enterprise Architect at Intel Corp. This document discusses Ceph storage configurations using Intel SSDs and discusses benchmark results. Tuning Ceph for all-flash storage can significantly improve performance, with up to 16x better random read performance and 7.6x better random write performance achieved. Using SSDs instead of HDDs provides much higher performance, needing 58x fewer drives for the same write performance and 175x fewer for the same read performance. The document also outlines several suggested Ceph storage node configurations using different ratios of SSDs and HDDs.
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Ceph Day Seoul - Delivering Cost Effective, High Performance Ceph cluster
- 1. Jack Zhang, SeniorEnterprise Architect, Intel Corp. 2016-08
- 2. Legalnotices Copyright © 2016Intel Corporation. All rights reserved. Intel, the Intel logo, Xeon, Intel Inside, and 3D XPoint are trademarks of Intel Corporation in the U.S. and/or other countries. *Other names and brands may be claimed as the property of others. FTC Optimization Notice Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice. Notice revision #20110804 The cost reduction scenarios described in this document are intended to enable you to get a better understanding of how the purchase of a given Intel product, combined with a number of situation-specific variables, might affect your future cost and savings. Nothing in this document should be interpreted as either a promise of or contract for a given level of costs. Tests document performance of components on a particular test, in specific systems. Differences in hardware, software, or configuration will affect actual performance. Consult other sources of information to evaluate performance as you consider your purchase. For more complete information about performance and benchmark results, visit http://www.intel.com/performance. 2
- 3. Agenda • Introduction, Cephat Intel • All-flash Ceph configurations and benchmark data • OEMs/ISVs/Intel Ceph Reference Architects/Recipes • Future Ceph* with Intel NVM Technologies 3D XpointTM and 3D NAND SSD • Summary 3*Other names and brands may be claimed as the property of others.
- 4. 4 Acknowledgements This is teamwork. Thanks for the contributions of Intel Team: PRC team: Jian Zhang, Yuan Zhou, Haodong Tang, Jianpeng Ma, Ning Li US team: Daniel Ferber, Tushar Gohad, Orlando Moreno, Anjaneya Chagam
- 5.
- 6. 6 Ceph at Intel– A brief introduction Optimize for Intel® platforms, flash and networking • Compression, Encryption hardware offloads (QAT & SOCs) • PMStore (for 3D XPoint DIMMs) • RBD caching and Cache tiering with NVM • IA optimized storage libraries to reduce latency (ISA-L, SPDK) Performance profiling, analysis and community contributions • All flash workload profiling and latency analysis, performance portal http://01.org/cephperf • Streaming, Database and Analytics workload driven optimizations Ceph enterprise usages and hardening • Manageability (Virtual Storage Manager) • Multi Data Center clustering (e.g., async mirroring) End Customer POCs with focus on broad industry influence • CDN, Cloud DVR, Video Surveillance, Ceph Cloud Services, Analytics • Working with 50+ customers to help them enabling Ceph based storage solutions POCs Ready to use IA, Intel NVM optimized systems & solutions from OEMs & ISVs • Ready to use IA, Intel NVM optimized systems & solutions from OEMs & ISVs • Intel system configurations, white papers, case studies • Industry events coverage Go to market Intel® Storage Acceleration Library (Intel® ISA-L) Intel® Storage Performance Development Kit (Intel® SPDK) Intel® Cache Acceleration Software (Intel® CAS) Virtual Storage Manager Ce-Tune Ceph Profiler
- 7. 7 Intel Ceph ContributionTimeline 2014 2015 2016 * Right Edge of box indicates approximate release date New Key/Value Store Backend (rocksdb) Giant* Hammer Infernalis Jewel CRUSH Placement Algorithm improvements (straw2 bucket type) Bluestore Backend Optimizations for NVM Bluestore SPDK Optimizations RADOS I/O Hinting (35% better EC Write erformance) Cache-tiering with SSDs (Write support) PMStore (NVM-optimized backend based on libpmem) RGW, Bluestore Compression, Encryption (w/ ISA-L, QAT backend) Virtual Storage Manager (VSM) Open Sourced CeTune Open Sourced Erasure Coding support with ISA-L Cache-tiering with SSDs (Read support) Client-side Block Cache (librbd)
- 8. 8 Intel Ceph valueadd-on areas Support • Sizing • Deploying • Benchmarking • Tunings • Troubleshooting • upgrade Feature • Management • Interface – iscsi • Compression • Deduplication • Encryption Performance • Caching • SSD • SPDK – speedup Stability • Stable code • Production ready Solutions • Customizing • IOPS optimized, Throughput optimized, Capacity-archive optimized Tools & BKMs VSM & Upstream work & Library Upstream features & Reference solutions Upstream POC solutions Ceph Powered by Intel
- 9. 9 All-flash Ceph configurationsand benchmark data
- 10. Ceph and NVMSSDs 10 * NVM – Non-volatile Memory
- 11. Suggested Configurations forCeph* Storage Node Standard/good (baseline): Use cases/Applications: that need high capacity storage with high throughput performance NVMe*/PCIe* SSD for Journal + Caching, HDDs as OSD data drive Example: 1x 1.6TB Intel® SSD DC P3700 as Journal + Intel® Cache Acceleration Software (Intel® CAS) + 12 HDDs Better IOPS Use cases/Applications: that need higher performance especially for throughput, IOPS and SLAs with medium storage capacity requirements NVMe/PCIe SSD as Journal, no caching, High capacity SATA SSD for data drive Example: 1x 800GB Intel® SSD DC P3700 + 4 to 6x 1.6TB DC S3510 Best Performance Use cases/Applications: that need highest performance (throughput and IOPS) and low latency. All NVMe/PCIe SSDs Example: 4 to 6 x 2TB Intel SSD DC P3700 Series More Information: https://intelassetlibrary.tagcmd.com/#assets/gallery/11492083/details *Other names and brands may be claimed as the property of others. 11 Ceph* storage node --Good CPU Intel(R) Xeon(R) CPU E5-2650v3 Memory 64 GB NIC 10GbE Disks 1x 1.6TB P3700 + 12 x 4TB HDDs (1:12 ratio) P3700 as Journal and caching Caching software Intel(R) CAS 3.0, option: Intel(R) RSTe/MD4.3 Ceph* Storage node --Better CPU Intel(R) Xeon(R) CPU E5-2690 Memory 128 GB NIC Duel 10GbE Disks 1x Intel(R) DC P3700(800G) + 4x Intel(R) DC S3510 1.6TB Ceph* Storage node --Best CPU Intel(R) Xeon(R) CPU E5-2699v3 Memory >= 128 GB NIC 2x 40GbE, 4x dual 10GbE Disks 4 to 6 x Intel® DC P3700 2TB
- 12. 12 All Flash (PCIe*SSD + SATA SSD) Ceph Configuration 2x10Gb NIC Test Environment CEPH1 MON OSD1 OSD8… FIO FIO CLIENT 1 1x10Gb NIC . FIO FIO CLIENT 2 FIO FIO CLIENT 3 FIO FIO CLIENT 4 FIO FIO CLIENT 5 CEPH2 OSD1 OSD8… CEPH3 OSD1 OSD8… CEPH4 OSD1 OSD8… CEPH5 OSD1 OSD8… “Better IOPS Ceph Configuration”¹ More Information: https://intelassetlibrary.tagcmd.com/#assets/gallery/11492083/details *Other names and brands may be claimed as the property of others. ¹ For configuration see Slide 5 5x Client Node • Intel® Xeon® processor E5- 2699 v3 @ 2.3GHz, 64GB mem • 10Gb NIC 5x Storage Node • Intel® Xeon® processor E5- 2699 v3 @ 2.3 GHz • 128GB Memory • 1x 1T HDD for OS • 1x Intel® DC P3700 800G SSD for Journal (U.2) • 4x 1.6TB Intel® SSD DC S3510 as data drive • 2 OSD instances one each Intel® DC S3510 SSD
- 13. 13 Ceph* on AllFlash Array --Tuning and optimization efforts • Up to 16x performance improvement for 4K random read, peak throughput 1.08M IOPS • Up to 7.6x performance improvement for 4K random write, 140K IOPS 4K Random Read Tunings 4K Random Write Tunings Default Single OSD Single OSD Tuning-1 2 OSD instances per SSD 2 OSD instances per SSD Tuning-2 Tuning1 + debug=0 Tuning2+Debug 0 Tuning-3 Tuning2 + jemalloc tuning3+ op_tracker off, tuning fd cache Tuning-4 Tuning3 + read_ahead_size=16 Tuning4+jemalloc Tuning-5 Tuning4 + osd_op_thread=32 Tuning4 + Rocksdb to store omap Tuning-6 Tuning5 + rbd_op_thread=4 N/A - 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 Default Tuning-1 Tuning-2 Tuning-3 Tuning-4 Tuning-5 Tuning-6 Normalized 4K random Read/Write Tunings 4K Random Read 4K random write Performance numbers are Intel Internal estimates For more complete information about performance and benchmark results, visit www.intel.com/benchmarks Intel and Intel logos are trademarks of Intel Corporation or its subsidiaries in the U.S. and/or other countries
- 14. 14 Ceph* on AllFlash Array --Tuning and optimization efforts 1.08M IOPS for 4K random read, 144K IOPS for 4K random write with tunings and optimizations 1 2 4 8 16 32 64 128 0 200000 400000 600000 800000 1000000 1200000 1400000 LATENCY(MS) IOPS RANDOM READ PERFORMANCE RBD # SCALE TEST 4K Rand.R 8K Rand.R 16K Rand.R 64K Rand.R 63K 64k Random Read IOPS @ 40ms 300K 16k Random Read IOPS @ 10 ms 1.08M 4k Random Read IOPS @ 3.4ms500K 8k Random Read IOPS @ 8.8ms 0 2 4 6 8 10 0 20000 40000 60000 80000 100000 120000 140000 160000 LATENCY(MS) IOPS RANDOM WRITE PERFORMANCE RBD # SCALE TEST 4K Rand.W 8K Rand.w 16K Rand.W 64K Rand.W 23K 64k Random Write IOPS @ 2.6ms 88K 16kRandom Write IOPS @ 2.7ms 132K 8k Random Write IOPS @ 4.1ms 144K 4kRandom Write IOPS @ 4.3ms Excellent random read performance and Acceptable random write performance Performance numbers are Intel Internal estimates For more complete information about performance and benchmark results, visit www.intel.com/benchmarks Intel and Intel logos are trademarks of Intel Corporation or its subsidiaries in the U.S. and/or other countries
- 15. Ceph* on AllFlash Array --Ceph*: SSD Cluster vs. HDD Cluster • Both journal on PCI Express*/NVM Express* SSD • 4K random write, need ~ 58x HDD Cluster (~ 2320 HDDs) to get same performance • 4K random read, need ~ 175x HDD Cluster (~ 7024 HDDs) to get the same performance ALL SSD Ceph* helps provide excellent TCO (both Capx and Opex), not only performance but also space, Power, Fail rate, etc. Client Node • 5 nodes with Intel® Xeon® processor E5-2699 v3 @ 2.30GHz, 64GB memory • OS : Ubuntu* Trusty Storage Node • 5 nodes with Intel® Xeon® processor E5-2699 v3 @ 2.30GHz, 128GB memory • Ceph* Version : 9.2.0, OS : Ubuntu* Trusty • 1 x Intel(R) DC P3700 SSDs for Journal per node Cluster difference: SSD cluster : 4 x Intel(R) DC S3510 1.6TB for OSD per node HDD cluster : 10 x SATA 7200RPM HDDs as OSD per node 15 0 50 100 150 200 4K Rand.W 4K Rand.R Normalized Performance Comparison HDD SSD ~ 58.2 ~175.6 Performance numbers are Intel Internal estimates For more complete information about performance and benchmark results, visit www.intel.com/benchmarks Intel and Intel logos are trademarks of Intel Corporation or its subsidiaries in the U.S. and/or other countries
- 16. 16 All-NVMe Ceph Clusterfor MySQL Hosting Supermicro 1028U-TN10RT+ NVMe2 NVMe3 NVMe4 CephOSD1 CephOSD2 CephOSD3 CephOSD4 CephOSD16 5-Node all-NVMe Ceph Cluster Dual-Xeon E5 2699v4@2.2GHz, 44C HT, 128GB DDR4 RHEL7.2, 3.10-327, Ceph v10.2.0, bluestore async ClusterNW2x10GbE 10x Client Systems Dual-socket Xeon E5 2699v3@2.3GHz 36 Cores HT, 128GB DDR4 Public NW 2x 10GbE Docker3 Sysbench Client Docker4 Sysbench Client DB containers 16 vCPUs, 32GB mem, 200GB RBD volume, 100GB MySQL dataset, InnoDB buf cache 25GB (25%) CephRBDClient Docker1 (krbd) MySQL DB Server NVMe1 Client containers 16 vCPUs, 32GB RAM FIO 2.8, Sysbench 0.5Docker2 (krbd) MySQL DB Server 20x 1.6TB P3700 SSDs 80 OSDs 2x Replication 19TB Effective Capacity Tests at cluster fill-level 82%
- 17. FIO 4K RandomRead/Write Performance and Latency Software and workloads used in performance tests may have been optimized for performance only on Intel microprocessors. Any difference in system hardware or software design or configuration may affect actual performance. See configuration slides in backup for details on software configuration and test benchmark parameters. 0 1 2 3 4 5 6 7 8 9 10 11 12 0 200000 400000 600000 800000 1000000 1200000 1400000 1600000 1800000 AverageLatency(ms) IOPS IODepth Scaling - Latency vs IOPS - Read, Write, and 70/30 4K Random Mix 5 nodes, 80 OSDs, Xeon E5 2699v4 Dual Socket / 128GB Ram / 2x10GbE Ceph 10.2.1 w/ BlueStore. 6x RBD FIO Clients 100% Rand Read 100% Rand Write 70% Rand Read ~1.4M 4k Random Read IOPS @~1 ms avg ~220k 4k Random Write IOPS @~5 ms avg ~560k 70/30% (OLTP) Random IOPS @~3 ms avg ~1.6M 4k Random Read IOPS @~2.2 ms avg First Ceph cluster to break ~1.4 Million 4K random IOPS, ~1ms response time in 5U 17
- 18. Sysbench MySQL OLTPPerformance (100% SELECT, 16KB Avg IO Size, QD=2-8 Avg) InnoDB buf pool = 25%, SQL dataset = 100GB 0 5 10 15 20 25 30 35 0 200000 400000 600000 800000 1000000 1200000 1400000 AvgLatency(ms) Aggregate Queries Per Second (QPS) Sysbench Thread Scaling - Latency vs QPS – 100% read (Point SELECTs) 5 nodes, 80 OSDs, Xeon E5 2699v4 Dual Socket / 128GB Ram / 2x10GbE Ceph 10.1.2 w/ BlueStore. 20 Docker-rbd Sysbench Clients (16vCPUs, 32GB) 100% Random Read ~55000 QPS with 1 client 1 million QPS with 20 clients @ ~11 ms avg 2 Sysbench threads/client ~1.3 million QPS with 20 Sysbench clients, 8 Sysbench threads/client Software and workloads used in performance tests may have been optimized for performance only on Intel microprocessors. Any difference in system hardware or software design or configuration may affect actual performance. See configuration slides in backup for details on software configuration and test benchmark parameters. 18 Database page size = 16KB
- 19. Sysbench MySQL OLTPPerformance (100% UPDATE, 70/30% SELECT/UPDATE) 0 50 100 150 200 250 300 350 400 450 500 0 100000 200000 300000 400000 500000 600000 AvgLatency(ms) Aggregate Queries Per Second (QPS) Sysbench Thread Scaling - Latency vs QPS – 100% Write (Index UPDATEs), 70/30% OLTP 5 nodes, 80 OSDs, Xeon E5 2699v4 Dual Socket / 128GB Ram / 2x10GbE Ceph 10.2.1 w/ BlueStore. 20 Docker-rbd Sysbench Clients (16vCPU, 32GB) 100% Random Write 70/30% Read/Write ~400k 70/30% OLTP QPS@~50 ms avg ~25000 QPS w/ 1 Sysbench client (4-8 threads) ~100k Write QPS@~200 ms avg (Aggregate, 20 clients) ~5500 QPS w/ 1 Sysbench client (2-4 threads) InnoDB buf pool = 25%, SQL dataset = 100GB Software and workloads used in performance tests may have been optimized for performance only on Intel microprocessors. Any difference in system hardware or software design or configuration may affect actual performance. See configuration slides in backup for details on software configuration and test benchmark parameters. 19 Database page size = 16KB
- 20.
- 21. Available Reference Architectures(recipes)
- 22. Available Reference Architectures(recipes) • http://www.redhat.com/en/files/resources/en-rhst-cephstorage-supermicro- INC0270868_v2_0715.pdf • http://www.qct.io/account/download/download?order_download_id=1065&dtype=Reference%20 Architecture • https://www.redhat.com/en/resources/red-hat-ceph-storage-hardware-configuration-guide • https://www.percona.com/resources/videos/accelerating-ceph-database-workloads-all-pcie-ssd-cluster • https://www.percona.com/resources/videos/mysql-cloud-head-head-performance-lab https://www.thomas-krenn.com/en/products/storage-systems/suse-enterprise-storage/ses-appliance-performance.html • https://intelassetlibrary.tagcmd.com/#assets/gallery/11492083
- 23. 23 Future Ceph* withIntel NVM Technologies 3D XpointTM and 3D NAND
- 24.
- 25. Moore’s Law Continuesto Disrupt the Computing Industry U.2 SSD First Intel® SSD for Commercial Usage 2017 >10TB 1,000,000x the capacity while shrinking the form factor 1992 12MB Source: Intel projections on SSD capacity 2019201820172014 >6TB >30TB 1xxTB>10TB 25
- 26. 3D XPoint™ Latency: ~100X Sizeof Data: ~1,000X NAND Latency: ~100,000X Size of Data: ~1,000X Latency: 1X Size of Data: 1X SRAM Latency: ~10 MillionX Size of Data: ~10,000 X HDD Latency: ~10X Size of Data: ~100X DRAM 3DXpoint™TECHNOLOGY STORAGE Technology claims are based on comparisons of latency, density and write cycling metrics amongst memory technologies recorded on published specifications of in-market memory products against internal Intel specifications. Performance numbers are Intel Internal estimates For more complete information about performance and benchmark results, visit www.intel.com/benchmarks Intel and Intel logos are trademarks of Intel Corporation or its subsidiaries in the U.S. and/or other countries
- 27. 27 Tests document performanceof components on a particular test, in specific systems. Differences in hardware, software, or configuration will affect actual performance. Consult other sources of information to evaluate performance as you consider your purchase. For more complete information about performance and benchmark results, visit http://www.intel.com/performance. Server Configuration: 2x Intel® Xeon® E5 2690 v3 NVM Express* (NVMe) NAND based SSD: Intel P3700 800 GB, 3D Xpoint based SSD: Optane NVMe OS: Red Hat* 7.1 Intel® Optane™ storage (prototype) vs Intel® SSD DC P3700 Series at QD=1
- 28. 28 5X lower 99th% Higheris better *Benchmarked on early prototype samples, 2S Haswell/Broadwell Xeon platform single server. Data produced without any tuning. We expect performance to improve with tuning. PCIe SSD Intel Optane Lower is better PCIe SSD Intel Optane 2X the Throughput Performance numbers are Intel Internal estimates For more complete information about performance and benchmark results, visit www.intel.com/benchmarks Intel and Intel logos are trademarks of Intel Corporation or its subsidiaries in the U.S. and/or other countries
- 29. Storage Hierarchy Tomorrow Hot 3DXPoint™ DIMMs NVM Express* (NVMe) 3D XPoint™ SSDs Warm NVMe 3D NAND SSDs Cold NVMe 3D NAND SSDs SATA or SAS HDDs ~6GB/s per channel ~250 nanosecond latency PCI Express* (PCIe*) 3.0 x4 link, ~3.2 GB/s <10 microsecond latency SATA* 6Gbps Minutes offline DRAM: 10GB/s per channel, ~100 nanosecond latency PCIe 3.0 x4, x2 link <100 microsecond latency Comparisons between memory technologies based on in-market product specifications and internal Intel specifications. Server side and/or AFA Business Processing High Performance/In-Memory Analytics Scientific Cloud Web/Search/Graph Big Data Analytics (Hadoop*) Object Store / Active-Archive Swift, lambert, HDFS, Ceph* Low cost archive 29
- 30. 30 3D XPoint™ &3D NAND Enable High performance & cost effective solutions Enterprise class, highly reliable, feature rich, and cost effective AFA solution: ‒ NVMe as Journal, 3D NAND TLC SSD as data store Enhance value through special software optimization on filestore and bluestore backend Ceph Node S3510 1.6TB S3510 1.6TB S3510 1.6TB S3510 1.6TB P3700 U.2 800GB Ceph Node P4500 4TB P4500 4TB P4500 4TB P4500 4TB P3700 & 3D Xpoint™ SSDs 3D NAND P4500 4TB 3D XPoint™ (performance) (capacity)
- 31. 31 3D Xpoint™ opportunities:Bluestore backend • Three usages for PMEM device • Backend of bluestore: raw PMEM block device or file of dax-enabled FS • Backend of rocksdb: raw PMEM block device or file of dax-enabled FS • Backend of rocksdb’s WAL: raw PMEM block device or file of DAX-enabled FS • Two methods for accessing PMEM devices • libpmemblk • mmap + libpmemlib • https://github.com/Ceph*/Ceph*/pull/8761 BlueStore Rocksdb BlueFS PMEMDevice PMEMDevice PMEMDevice Metadata Libpmemlib Libpmemblk DAX Enabled File System mmap Load/store mmap Load/store File File File API API Data
- 32. Summary • Strong demandsand trends to all-flash array Ceph* solutions • IOPS/SLA based applications such as SQL Database can be backend with all flash Ceph • NVM technologies such as 3D Xpoint and 3D NANDs enable new performance capabilities and expedite all flash adoptions • Bluestore shows significant performance increase compared with filestore, but still needs to be improved • Let’s work together to make Ceph* more efficient with all-flash array! 32
- 33.
- 34. Legalnotices Copyright © 2016Intel Corporation. All rights reserved. Intel, the Intel logo, Xeon, Intel Inside, and 3D XPoint are trademarks of Intel Corporation in the U.S. and/or other countries. *Other names and brands may be claimed as the property of others. FTC Optimization Notice Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice. Notice revision #20110804 The cost reduction scenarios described in this document are intended to enable you to get a better understanding of how the purchase of a given Intel product, combined with a number of situation-specific variables, might affect your future cost and savings. Nothing in this document should be interpreted as either a promise of or contract for a given level of costs. Tests document performance of components on a particular test, in specific systems. Differences in hardware, software, or configuration will affect actual performance. Consult other sources of information to evaluate performance as you consider your purchase. For more complete information about performance and benchmark results, visit http://www.intel.com/performance. 34
- 36.
- 37. Storage interface Use FIORBDas storage interface Tool • Use “dd” to prepare data for R/W tests • Use fio (ioengine=libaio, direct=1) to generate 4 IO patterns: sequential write/read, random write/read • Access Span: 60GB Run rules • Drop osds page caches ( “1” > /proc/sys/vm/drop_caches) • 100 secs for warm up, 600 secs for data collection • Run 4KB/64KB tests under different # of rbds (1 to 120) Testing Methodology
- 38. 38 [global] debug paxos =0/0 debug journal = 0/0 debug mds_balancer = 0/0 debug mds = 0/0 mon_pg_warn_max_per_osd = 10000 debug lockdep = 0/0 debug auth = 0/0 debug mds_log = 0/0 debug mon = 0/0 debug perfcounter = 0/0 debug monc = 0/0 debug rbd = 0/0 debug throttle = 0/0 debug mds_migrator = 0/0 debug client = 0/0 debug rgw = 0/0 debug finisher = 0/0 debug journaler = 0/0 debug ms = 0/0 debug hadoop = 0/0 debug mds_locker = 0/0 debug tp = 0/0 debug context = 0/0 debug osd = 0/0 debug bluestore = 0/0 debug objclass = 0/0 debug objecter = 0/0 osd_mount_options_xfs = rw,noatime,inode64,logbsize=256k,delaylog osd_mkfs_type = xfs filestore_queue_max_ops = 5000 osd_client_message_size_cap = 0 objecter_infilght_op_bytes = 1048576000 ms_dispatch_throttle_bytes = 1048576000 osd_mkfs_options_xfs = -f -i size=2048 filestore_wbthrottle_enable = True filestore_fd_cache_shards = 64 objecter_inflight_ops = 1024000 filestore_queue_committing_max_bytes = 1048576000 osd_op_num_threads_per_shard = 2 filestore_queue_max_bytes = 10485760000 osd_op_threads = 32 osd_op_num_shards = 16 filestore_max_sync_interval = 10 filestore_op_threads = 16 osd_pg_object_context_cache_count = 10240 journal_queue_max_ops = 3000 journal_queue_max_bytes = 10485760000 journal_max_write_entries = 1000 filestore_queue_committing_max_ops = 5000 journal_max_write_bytes = 1048576000 osd_enable_op_tracker = False filestore_fd_cache_size = 10240 osd_client_message_cap = 0 Ceph* All-Flash Tunings debug log = 0 debug filer = 0/0 debug mds_log_expire = 0/0 debug crush = 0/0 debug optracker = 0/0 debug rados = 0/0 debug heartbeatmap = 0/0 debug buffer = 0/0 debug asok = 0/0 debug objectcacher = 0/0 debug filestore = 0/0 debug timer = 0/0 mutex_perf_counter = True rbd_cache = False ms_crc_header = False ms_crc_data = False osd_pool_default_pgp_num = 32768 osd_pool_default_size = 2 rbd_op_threads = 4 Ceph*x require signatures = False Ceph*x sign messages = False osd_pool_default_pg_num = 32768 throttler_perf_counter = False auth_service_required = none auth_cluster_required = none auth_client_required = none