ecs.c6r.4xlarge by Alibaba Cloud

ecs.c6r.4xlarge is a ecs.c6r family (16 vCPUs, 32 GiB RAM, 0 GB storage) server offered by Alibaba Cloud with 16 vCPUs, 32 GiB of memory and 0 GB of storage. The pricing starts at 0.1886 USD per hour.
16 vCPU
32 GiB Memory
Spare SCore
28,612
(All-cores)
1,790
(Single-core)

Specifications

Server Metadata

Vendor ID
alicloud
Name
ecs.c6r.4xlarge
Description
ecs.c6r family (16 vCPUs, 32 GiB RAM, 0 GB storage)
Family
ecs.c6r
Hw Virt
Status
active
Observed At
2026-10-30T18:54:23.339555

Availability

REGION / IDSPOTONDEMAND
Shenzhen (CN) / cn-shenzhen
0.2624 USD/h 0.3859 USD/h
Beijing (CN) / cn-beijing
- 0.3859 USD/h
Hangzhou (CN) / cn-hangzhou
- 0.3859 USD/h
Shanghai (CN) / cn-shanghai
- 0.3859 USD/h
Frankfurt (DE) / eu-central-1
- 0.5491 USD/h
Singapore (SG) / ap-southeast-1
0.2358 USD/h 0.6737 USD/h

Processor

vCPUs
16
Hypervisor
KVM
CPU Allocation
Dedicated
CPU Speed
2.8 GHz
CPU Architecture
arm64
CPU Manufacturer
Ampere
CPU Family
Ampere Altra
CPU Model
Ampere Altra
CPU Flags
fp, asimd, evtstrm, aes, pmull, sha1, sha2, crc32, atomics, fphp, asimdhp, cpuid, asimdrdm, lrcpc, dcpop, asimddp, ssbs
Ecpus
16
Scalability
100

System Resources and Accelerators

MEMORY
Memory Amount
32 GiB
Memory Amount Actual
32 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
      5 Gbps
      Inbound Traffic
      0 GB/month
      Outbound Traffic
      0 GB/month
      IPv4
      0

      CPU and System Topology

      Server Description

      An Arm64-powered compute instance delivering dedicated multi-core performance and high memory bandwidth for scale-out workloads.

      Compute OptimizedGeneral Purpose

      Alibaba Cloud ecs.c6r.4xlarge is an Arm64-based virtual server featuring 16 dedicated Ampere Altra vCPUs clocked at 2.8 GHz and 32.0 GB of system memory. Operating on a KVM hypervisor, this instance does not include local storage or GPU accelerators, and provides a baseline network bandwidth of 5 Gbps. Benchmark results position the server in the average tier for multi-core processing, memory bandwidth, and database operations, though it exhibits weaker single-core and cryptographic performance. The 1:2 vCPU-to-RAM ratio makes it a cost-effective option for scale-out, multi-threaded workloads. It is well-suited for static web serving, containerized microservices, and Redis database deployments.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      0.99Score
      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) 2,137,804 ops/sec 1,919,289 ops/sec 1.1 50.00% 50.00% +4.90%
      Redis RPS (pipeline=16, SET) 12,197,501 ops/sec 11,728,058 ops/sec 1 20.00% 20.00% 0.00%
      PassMark Memory Mark (composite) 1,919 2,416 0.79 10.00% 10.00% -2.30%
      Memory bandwidth (read, 16 MB ~ L3) 141,808 MB/sec 108,466 MB/sec 1.3 10.00% 10.00% +2.70%
      PassMark single-thread CPU 1,335 Mops/s 2,365 Mops/s 0.54 10.00% 10.00% -6.00%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 1,104

      Geekbench Multi-Core

      Score: 9,534

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 11,528
      Compression
      		 91,349
      Encryption
      		 2,559
      Extended Instructions
      		 11,951
      Floating Point Maths
      		 57,629
      Integer Maths
      		 75,920
      Physics
      		 1,764
      Prime Numbers
      		 95
      Single Threaded
      		 1,335
      String Sorting
      		 54,721

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 1,919
      Database Operations
      		 9,603
      Memory Latency
      		 68
      Memory Read Cached
      		 11,398
      Memory Read Uncached
      		 9,038
      Memory Write
      		 15,055

      Stress-ng Stressors

      CPU integerSingleMultiScaling
      atomic
      		 110.82 18.25 0.16×
      bitops
      		 108,448 1,733,224 15.98×
      branch
      		 220,724 3,528,777 15.99×
      funccall
      		 1,338 21,386 15.98×
      funcret
      		 20,899 332,553 15.91×
      hash
      		 127,987 2,047,670 16.00×
      intmath
      		 31,758 500,047 15.75×
      nop
      		 173,740 2,774,157 15.97×
      prime
      		 336,402 5,384,254 16.01×
      rotate
      		 96,489 1,542,507 15.99×
      str
      		 515,653 8,233,203 15.97×
      wcs
      		 119,384 1,905,723 15.96×
      CryptographySingleMultiScaling
      crypt
      		 2,906 46,337 15.95×
      CompressionSingleMultiScaling
      jpeg
      		 509.69 8,114 15.92×
      zlib
      		 40.31 595.57 14.77×
      HypervisorSingleMultiScaling
      clock
      		 43,956 350,723 7.98×
      clone
      		 280.18 3,317 11.84×
      context
      		 3,506 55,874 15.94×
      cpu-sched
      		 61.37 1,039 16.93×
      eventfd
      		 70,534 1,324,618 18.78×
      fault
      		 12,820 145,778 11.37×
      fork
      		 3,699 34,155 9.23×
      getrandom
      		 50,511 807,066 15.98×
      hrtimers
      		 1,273,480 2,213,387 1.74×
      mprotect
      		 862,836 4,943,885 5.73×
      mtx
      		 5,437,951 695,025,289 127.81×
      munmap
      		 2,529 27,792 10.99×
      null
      		 588,796 9,416,866 15.99×
      pipe
      		 584,092 8,760,923 15.00×
      priv-instr
      		 801,833 11,012,469 13.73×
      resched
      		 3,781,231 3,421,900 0.90×
      switch
      		 133,289 3,439,491 25.80×
      timermix
      		 478,461 7,571,157 15.82×
      tlb-shootdown
      		 9,467 17,215 1.82×
      vdso
      		 46,800,710 705,064,056 15.07×
      vfork
      		 26,535 174,954 6.59×
      yield
      		 13,539,469 14,709,642 1.09×
      zero
      		 2,830,183 45,216,998 15.98×
      CPU float/SIMDSingleMultiScaling
      eigen
      		 1,336 21,345 15.98×
      expmath
      		 240.02 3,835 15.98×
      fma
      		 640,950 10,235,393 15.97×
      fp
      		 103.05 1,654 16.05×
      fractal
      		 6.6 103.01 15.61×
      hyperbolic
      		 244.18 3,902 15.98×
      logmath
      		 293.44 4,690 15.98×
      matrix
      		 5,344 85,429 15.99×
      matrix-3d
      		 467.43 4,821 10.31×
      monte-carlo
      		 224.97 3,574 15.89×
      mpfr
      		 641.54 10,255 15.99×
      powmath
      		 176.39 2,820 15.99×
      trig
      		 329.32 5,264 15.98×
      veccmp
      		 17,144 274,297 16.00×
      vecfp
      		 745.18 11,877 15.94×
      vecmath
      		 3,089 49,361 15.98×
      vecshuf
      		 672.48 10,739 15.97×
      vecwide
      		 18,405 294,166 15.98×
      AlgorithmsSingleMultiScaling
      bitonicsort
      		 5.4 86.4 16.00×
      bsearch
      		 258.28 4,128 15.98×
      bubblesort
      		 0.8 12.8 16.00×
      fibsearch
      		 273.28 4,371 16.00×
      heapsort
      		 8.2 131.2 16.00×
      hsearch
      		 4,828 78,577 16.27×
      insertionsort
      		 4.6 73.4 15.96×
      malloc
      		 2,409,623 25,317,667 10.51×
      mcontend
      		 200.27 36,214 180.82×
      mergesort
      		 27.8 434.97 15.65×
      qsort
      		 19.4 312.18 16.09×
      skiplist
      		 5,364 85,641 15.97×
      tree
      		 1.2 11.99 9.99×
      MemorySingleMultiScaling
      cache
      		 300,986 696,600 2.31×
      cachehammer
      		 185,971 529,200 2.85×
      cacheline
      		 39.14 684.33 17.48×
      memcpy
      		 443.52 7,094 16.00×
      memrate
      		 3.14 24.85 7.91×
      memthrash
      		 175.96 365.03 2.07×
      ptr-chase
      		 14,265,168 151,672,613 10.63×
      spinmem
      		 1,174 1,712 1.46×
      stream
      		 1,180 594,085 503.51×
      vm
      		 60,327 920,891 15.26×

      Stress-ng Raw Scores

      Stress-ng Relative Multicore Performance

      LLM Inference Speed for Prompt Processing

      LLM Inference Speed for Text Generation

      Static Web Server

      Redis

      Alternatives

      Servers of the Same Family

      INSTANCEvCPUsMEMORYAccelerators
      ecs.c6r.large 24 GiB0
      ecs.c6r.xlarge 48 GiB0
      ecs.c6r.2xlarge 816 GiB0
      ecs.c6r.8xlarge 3264 GiB0
      ecs.c6r.16xlarge 64128 GiB0

      Similar Servers

      INSTANCEVENDORvCPUsMEMORYAccelerators

      ecs.c6r.4xlarge FAQs