ecs.r6a.8xlarge by Alibaba Cloud

ecs.r6a.8xlarge is a ecs.r6a family (32 vCPUs, 256 GiB RAM, 0 GB storage) server offered by Alibaba Cloud with 32 vCPUs, 256 GiB of memory and 0 GB of storage. The pricing starts at 1.477 USD per hour.
32 vCPU
256 GiB Memory
Spare SCore
12,221
(All-cores)
764
(Single-core)

Specifications

Server Metadata

Vendor ID
alicloud
Name
ecs.r6a.8xlarge
Description
ecs.r6a family (32 vCPUs, 256 GiB RAM, 0 GB storage)
Family
ecs.r6a
Hw Virt
Average Time To Start
19
Status
active
Observed At
2026-10-28T13:49:57.183686

Availability

REGION / IDSPOTONDEMAND
Beijing (CN) / cn-beijing
- 1.477 USD/h
Shenzhen (CN) / cn-shenzhen
- 1.477 USD/h

Processor

vCPUs
32
Hypervisor
KVM
CPU Allocation
Dedicated
CPU Cores
16
CPU Speed
2.6 GHz
CPU Architecture
x86_64
CPU Manufacturer
AMD
CPU Family
EPYC
CPU Model
7H12
CPU L1D Cache
32 KiB
CPU L1D Cache Total
512 KiB
CPU L1I Cache
32 KiB
CPU L1I Cache Total
512 KiB
CPU L2 Cache
512 KiB
CPU L2 Cache Total
8 MiB
CPU L3 Cache
16 MiB
CPU L3 Cache Total
64 MiB
CPU Flags
fpu, vme, de, pse, tsc, msr, pae, mce, cx8, apic, sep, mtrr, pge, mca, cmov, pat, pse36, clflush, mmx, fxsr, sse, sse2, ht, syscall, nx, mmxext, fxsr_opt, pdpe1gb, rdtscp, lm, constant_tsc, rep_good, nopl, nonstop_tsc, cpuid, extd_apicid, tsc_known_freq, pni, pclmulqdq, monitor, ssse3, fma, cx16, sse4_1, sse4_2, x2apic, movbe, popcnt, aes, xsave, avx, f16c, rdrand, hypervisor, lahf_lm, cmp_legacy, cr8_legacy, abm, sse4a, misalignsse, 3dnowprefetch, osvw, topoext, perfctr_core, ssbd, ibpb, stibp, vmmcall, fsgsbase, tsc_adjust, bmi1, avx2, smep, bmi2, rdseed, adx, smap, sha_ni, xsaveopt, xsavec, xgetbv1, arat
Ecpus
16
Scalability
50

System Resources and Accelerators

MEMORY
Memory Amount
256 GiB
Memory Amount Actual
256 GiB
ACCELERATORS
Accelerator Count
0
Accelerator Memory Min
0 MiB
Accelerator Memory Total
0 MiB
Accelerators
    STORAGE
    Storage Size
    0 GB
    Storages
      NETWORK
      Network Speed Baseline
      8 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      CPU and System Topology

      Server Description

      A memory-optimized virtual server featuring high RAM density and dedicated AMD EPYC processors for concurrent, memory-intensive enterprise workloads.

      Memory OptimizedGeneral Purpose

      Alibaba Cloud ecs.r6a.8xlarge is a memory-optimized instance featuring 32 dedicated vCPUs and 256.0 GB of RAM, powered by an AMD EPYC 7H12 processor running at 2.6 GHz on the KVM hypervisor. It offers a high memory-to-core ratio of 8.0 GB per vCPU, with no local storage or GPU acceleration. Network performance is anchored by an 8 Gbps baseline bandwidth. Benchmark data reveals a tradeoff: single-core CPU performance and uncached large-block memory bandwidth are relatively weak, placing in the bottom 10% and 25% respectively. Conversely, multi-core CPU performance, PassMark database operations, and Redis SET throughput consistently rank in the average tier. This hardware profile is optimized for memory-intensive workloads such as database hosting, in-memory caching, and enterprise applications that benefit from high memory density rather than peak single-threaded compute speeds.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      1Score
      Precomputed compound score for Cache Intensive workloads. A weighted average (geometric mean) of benchmark scores compared to their medians: score = ∏ (x_i / m_i)^(w_i / Σw). The score of 1.0 represents a synthetic baseline server with the median performance of each component benchmark; 0.5 means roughly half the performance; and 2.0 means twice the performance of that reference profile. Component weights: 50% Redis RPS (pipeline=1, SET), 20% Redis RPS (pipeline=16, SET), 10% PassMark Memory Mark (composite), 10% Memory bandwidth (read, 16 MB ~ L3), 10% PassMark single-thread CPU. Rationale for component selection: In-memory key-value store workload, mixing direct Redis performance metrics with memory speed and latency benchmarks, and single-core CPU performance profiles.
      Component Score Weight Impact
      Raw Reference Normalized Target Actual
      Redis RPS (pipeline=1, SET) 2,269,441 ops/sec 1,919,289 ops/sec 1.2 50.00% 50.00% +9.50%
      Redis RPS (pipeline=16, SET) 15,771,861 ops/sec 11,728,058 ops/sec 1.3 20.00% 20.00% +5.40%
      PassMark Memory Mark (composite) 2,654 2,416 1.1 10.00% 10.00% +0.96%
      Memory bandwidth (read, 16 MB ~ L3) 36,386 MB/sec 108,466 MB/sec 0.33 10.00% 10.00% -10.00%
      PassMark single-thread CPU 2,119 Mops/s 2,365 Mops/s 0.88 10.00% 10.00% -1.30%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 1,243

      Geekbench Multi-Core

      Score: 9,156

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 31,304
      Compression
      		 455,401
      Encryption
      		 33,466
      Extended Instructions
      		 25,910
      Floating Point Maths
      		 64,015
      Integer Maths
      		 106,829
      Physics
      		 1,681
      Prime Numbers
      		 134
      Single Threaded
      		 2,119
      String Sorting
      		 49,504

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2,654
      Database Operations
      		 8,843
      Memory Latency
      		 50
      Memory Read Cached
      		 24,294
      Memory Read Uncached
      		 11,761
      Memory Write
      		 11,247

      Stress-ng Stressors

      CPU integerSingleMultiScaling
      atomic
      		 421.86 342.6 0.81×
      bitops
      		 119,973 2,415,986 20.14×
      branch
      		 151,984 4,153,698 27.33×
      funccall
      		 499.41 10,187 20.40×
      funcret
      		 13,984 314,937 22.52×
      hash
      		 130,041 3,132,588 24.09×
      intmath
      		 19,293 337,666 17.50×
      nop
      		 234,930 3,792,141 16.14×
      prime
      		 340,060 6,518,402 19.17×
      rotate
      		 59,539 989,531 16.62×
      str
      		 693,242 13,274,133 19.15×
      wcs
      		 506,256 8,241,449 16.28×
      CryptographySingleMultiScaling
      crypt
      		 2,841 44,732 15.74×
      CompressionSingleMultiScaling
      jpeg
      		 620.93 12,591 20.28×
      zlib
      		 64.09 1,427 22.26×
      HypervisorSingleMultiScaling
      clock
      		 17,890 225,334 12.60×
      clone
      		 210.9 2,957 14.02×
      context
      		 3,032 82,403 27.18×
      cpu-sched
      		 62.03 2,042 32.91×
      eventfd
      		 42,337 1,159,232 27.38×
      fault
      		 7,864 143,778 18.28×
      fork
      		 2,901 50,543 17.42×
      getrandom
      		 34,367 689,124 20.05×
      hrtimers
      		 421,535 2,638,666 6.26×
      mprotect
      		 542,068 4,755,396 8.77×
      mtx
      		 36,661,265 1,329,857,017 36.27×
      munmap
      		 2,032 40,227 19.79×
      null
      		 372,475 8,990,438 24.14×
      pipe
      		 1,432,386 9,349,947 6.53×
      priv-instr
      		 382,754 9,702,619 25.35×
      resched
      		 6,104,691 3,002,280 0.49×
      switch
      		 114,175 3,032,324 26.56×
      timermix
      		 129,320 3,569,931 27.61×
      tlb-shootdown
      		 11,751 58,477 4.98×
      tsc
      		 653,113 18,687,718 28.61×
      usersyscall
      		 273,429 6,992,946 25.57×
      vdso
      		 62,242,218 1,361,130,091 21.87×
      vfork
      		 19,382 120,423 6.21×
      x86syscall
      		 4,488,148 111,882,512 24.93×
      yield
      		 15,204,997 15,259,539 1.00×
      zero
      		 1,982,342 47,947,443 24.19×
      CPU float/SIMDSingleMultiScaling
      eigen
      		 12,220 231,225 18.92×
      expmath
      		 2,769 67,806 24.48×
      fma
      		 716,919 17,371,930 24.23×
      fp
      		 207.69 4,856 23.38×
      fractal
      		 6.4 151.07 23.60×
      hyperbolic
      		 3,594 86,750 24.14×
      logmath
      		 4,078 94,915 23.28×
      matrix
      		 2,606 71,393 27.39×
      matrix-3d
      		 99.2 1,170 11.79×
      monte-carlo
      		 161.12 4,075 25.29×
      mpfr
      		 1,257 23,088 18.37×
      powmath
      		 1,338 34,073 25.46×
      trig
      		 1,549 35,980 23.22×
      veccmp
      		 16,966 297,831 17.55×
      vecfp
      		 1,347 30,597 22.72×
      vecmath
      		 3,351 78,991 23.57×
      vecshuf
      		 472.16 8,435 17.86×
      vecwide
      		 22,898 443,930 19.39×
      AlgorithmsSingleMultiScaling
      bitonicsort
      		 6.8 135.2 19.88×
      bsearch
      		 223.98 4,178 18.65×
      bubblesort
      		 0.8 12.8 16.00×
      fibsearch
      		 264.77 5,349 20.20×
      heapsort
      		 8.6 189.39 22.02×
      hsearch
      		 5,400 108,325 20.06×
      insertionsort
      		 6.6 114.6 17.36×
      malloc
      		 2,430,983 43,735,957 17.99×
      mcontend
      		 101.54 3,928 38.69×
      mergesort
      		 25.8 603.98 23.41×
      qsort
      		 16.6 382.78 23.06×
      skiplist
      		 5,512 140,328 25.46×
      tree
      		 1.8 19.18 10.66×
      MemorySingleMultiScaling
      cache
      		 467,183 733,078 1.57×
      cachehammer
      		 509,687 8,586,338 16.85×
      cacheline
      		 49.17 2,443 49.69×
      l1cache
      		 192.56 2,934 15.24×
      memcpy
      		 355.46 5,756 16.19×
      memrate
      		 1.75 5.82 3.33×
      memthrash
      		 125.38 226.05 1.80×
      ptr-chase
      		 28,797,912 199,611,587 6.93×
      spinmem
      		 125.99 887.3 7.04×
      stream
      		 154.89 9,032 58.31×
      vm
      		 53,439 294,593 5.51×

      Stress-ng Raw Scores

      Stress-ng Relative Multicore Performance

      Static Web Server

      Redis

      Alternatives

      Servers of the Same Family

      INSTANCEvCPUsMEMORYAccelerators
      ecs.r6a.large 216 GiB0
      ecs.r6a.xlarge 432 GiB0
      ecs.r6a.2xlarge 864 GiB0
      ecs.r6a.4xlarge 16128 GiB0
      ecs.r6a.16xlarge 64512 GiB0

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      ecs.r6a.8xlarge FAQs