ecs.c6.4xlarge by Alibaba Cloud

ecs.c6.4xlarge is a ecs.c6 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 0.4829 USD per hour.
16 vCPU
32 GiB Memory
Spare SCore
13,975
(All-cores)
1,311
(Single-core)

Specifications

Server Metadata

Vendor ID
alicloud
Name
ecs.c6.4xlarge
Description
ecs.c6 family (16 vCPUs, 32 GiB RAM, 0 GB storage)
Family
ecs.c6
Hw Virt
Average Time To Start
14.5
Status
active
Observed At
2026-10-24T11:32:00.645318

Availability

REGION / IDSPOTONDEMAND
Shenzhen (CN) / cn-shenzhen
- 0.4829 USD/h
Riyadh (SA) / me-central-1
- 0.8352 USD/h

Processor

vCPUs
16
Hypervisor
KVM
CPU Allocation
Dedicated
CPU Cores
8
CPU Speed
2.5 GHz
CPU Architecture
x86_64
CPU Manufacturer
Intel
CPU Family
Xeon
CPU Model
8269CY
CPU L1D Cache
32 KiB
CPU L1D Cache Total
256 KiB
CPU L1I Cache
32 KiB
CPU L1I Cache Total
256 KiB
CPU L2 Cache
1 MiB
CPU L2 Cache Total
8 MiB
CPU L3 Cache
36 MiB
CPU L3 Cache Total
36 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, ss, ht, syscall, nx, pdpe1gb, rdtscp, lm, constant_tsc, rep_good, nopl, xtopology, nonstop_tsc, cpuid, tsc_known_freq, pni, pclmulqdq, monitor, ssse3, fma, cx16, pcid, sse4_1, sse4_2, x2apic, movbe, popcnt, aes, xsave, avx, f16c, rdrand, hypervisor, lahf_lm, abm, 3dnowprefetch, pti, fsgsbase, tsc_adjust, bmi1, avx2, smep, bmi2, erms, invpcid, avx512f, avx512dq, rdseed, adx, smap, clflushopt, clwb, avx512cd, avx512bw, avx512vl, xsaveopt, xsavec, xgetbv1, xsaves, arat, avx512_vnni
Ecpus
10.7
Scalability
66.88

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

      A dedicated compute-optimized instance with sixteen vCPUs and average multi-threaded performance for parallelized workloads without local storage requirements.

      Compute OptimizedGeneral Purpose

      Alibaba Cloud ecs.c6.4xlarge is an x86_64 compute-optimized server instance featuring 16 dedicated vCPUs and 32.0 GB of RAM, powered by an Intel Xeon 8269CY processor at 2.5 GHz. Operating on the KVM hypervisor, it lacks local storage and GPU accelerators, utilizing a 5 Gbps baseline network bandwidth. Performance benchmarks show a distinct contrast: single-core performance is weak, falling into the bottom 25% for single-threaded compression and stress-ng tests. However, multi-core performance and memory bandwidth consistently rank in the average tier, with a multi-core Geekbench score of 7299.0 and a Passmark CPU score of 15380.43. This resource profile makes the instance suitable for multi-threaded applications, software compilation, database operations, and static web serving, provided workloads do not require high single-thread performance or local SSD storage.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      0.77Score
      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) 1,407,680 ops/sec 1,919,289 ops/sec 0.74 50.00% 50.00% -14.00%
      Redis RPS (pipeline=16, SET) 8,172,146 ops/sec 11,728,058 ops/sec 0.68 20.00% 20.00% -7.40%
      PassMark Memory Mark (composite) 2,381 2,416 1 10.00% 10.00% 0.00%
      Memory bandwidth (read, 16 MB ~ L3) 94,285 MB/sec 108,466 MB/sec 0.85 10.00% 10.00% -1.60%
      PassMark single-thread CPU 1,961 Mops/s 2,365 Mops/s 0.83 10.00% 10.00% -1.80%

      Memory Bandwidth

      Compression

      OpenSSL

      Geekbench Single-Core

      Score: 1,167

      Geekbench Multi-Core

      Score: 7,299

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 15,380
      Compression
      		 217,864
      Encryption
      		 6,467
      Extended Instructions
      		 13,013
      Floating Point Maths
      		 25,075
      Integer Maths
      		 46,708
      Physics
      		 1,570
      Prime Numbers
      		 88
      Single Threaded
      		 1,961
      String Sorting
      		 29,053

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2,381
      Database Operations
      		 5,534
      Memory Latency
      		 55
      Memory Read Cached
      		 22,717
      Memory Read Uncached
      		 9,686
      Memory Write
      		 9,539

      Stress-ng Stressors

      CPU integerSingleMultiScaling
      atomic
      		 210.56 204.67 0.97×
      bitops
      		 114,767 1,021,666 8.90×
      branch
      		 144,679 1,756,038 12.14×
      funccall
      		 532.26 4,467 8.39×
      funcret
      		 10,819 125,316 11.58×
      hash
      		 122,610 1,451,315 11.84×
      intmath
      		 20,977 256,755 12.24×
      nop
      		 179,395 1,241,554 6.92×
      prime
      		 297,446 2,722,816 9.15×
      rotate
      		 90,637 923,630 10.19×
      str
      		 778,157 7,936,277 10.20×
      wcs
      		 485,815 4,332,721 8.92×
      CryptographySingleMultiScaling
      crypt
      		 2,289 17,874 7.81×
      CompressionSingleMultiScaling
      jpeg
      		 560.87 5,576 9.94×
      zlib
      		 52.22 615.69 11.79×
      HypervisorSingleMultiScaling
      clock
      		 15,481 154,620 9.99×
      clone
      		 452.41 3,358 7.42×
      context
      		 1,784 19,057 10.68×
      cpu-sched
      		 63.83 1,017 15.93×
      eventfd
      		 81,186 821,982 10.12×
      fault
      		 12,022 122,892 10.22×
      fork
      		 3,939 36,879 9.36×
      getrandom
      		 42,335 418,997 9.90×
      hrtimers
      		 227,090 1,514,740 6.67×
      mprotect
      		 1,020,742 2,239,651 2.19×
      mtx
      		 12,990,968 417,844,095 32.16×
      munmap
      		 2,783 28,474 10.23×
      null
      		 194,945 1,899,310 9.74×
      pipe
      		 859,799 4,648,297 5.41×
      priv-instr
      		 404,319 4,149,394 10.26×
      resched
      		 3,029,760 1,605,765 0.53×
      switch
      		 194,366 1,829,747 9.41×
      timermix
      		 327,490 3,663,829 11.19×
      tlb-shootdown
      		 10,388 34,710 3.34×
      tsc
      		 933,432 10,372,511 11.11×
      usersyscall
      		 282,180 2,896,106 10.26×
      vdso
      		 74,343,352 846,122,139 11.38×
      vfork
      		 29,198 184,201 6.31×
      x86syscall
      		 2,137,309 21,422,380 10.02×
      yield
      		 7,420,258 7,808,547 1.05×
      zero
      		 1,449,546 13,786,601 9.51×
      CPU float/SIMDSingleMultiScaling
      eigen
      		 15,255 150,159 9.84×
      expmath
      		 2,525 30,897 12.24×
      fma
      		 547,043 7,175,796 13.12×
      fp
      		 119.23 1,381 11.58×
      fractal
      		 4.6 54.4 11.83×
      hyperbolic
      		 2,617 32,990 12.61×
      logmath
      		 4,284 51,775 12.09×
      matrix
      		 2,840 36,611 12.89×
      matrix-3d
      		 633.95 2,956 4.66×
      monte-carlo
      		 96.96 1,029 10.61×
      mpfr
      		 1,148 9,940 8.66×
      powmath
      		 1,492 18,227 12.22×
      trig
      		 1,609 17,484 10.87×
      veccmp
      		 14,633 120,409 8.23×
      vecfp
      		 1,245 12,725 10.22×
      vecmath
      		 2,050 25,925 12.65×
      vecshuf
      		 529.03 4,552 8.60×
      vecwide
      		 24,228 205,284 8.47×
      AlgorithmsSingleMultiScaling
      bitonicsort
      		 6.8 63.2 9.29×
      bsearch
      		 234.33 2,143 9.14×
      bubblesort
      		 0.6 6.4 10.67×
      fibsearch
      		 263.71 2,668 10.12×
      heapsort
      		 8 77.8 9.72×
      hsearch
      		 4,690 46,539 9.92×
      insertionsort
      		 7.6 60.8 8.00×
      malloc
      		 2,080,066 24,126,396 11.60×
      mcontend
      		 121.7 4,075 33.49×
      mergesort
      		 25 262.79 10.51×
      qsort
      		 17.8 174.6 9.81×
      skiplist
      		 4,915 55,540 11.30×
      tree
      		 1.4 9.6 6.86×
      MemorySingleMultiScaling
      cache
      		 351,906 672,254 1.91×
      cachehammer
      		 370,533 5,137,183 13.86×
      cacheline
      		 34.96 603.72 17.27×
      l1cache
      		 213.52 1,854 8.68×
      memcpy
      		 358.97 2,905 8.09×
      memrate
      		 1.17 9.14 7.81×
      memthrash
      		 182.14 556.57 3.06×
      ptr-chase
      		 27,786,189 161,071,723 5.80×
      spinmem
      		 365.99 1,118 3.05×
      stream
      		 29.76 3,971 133.43×
      vm
      		 55,853 293,505 5.25×

      Stress-ng Raw Scores

      Stress-ng Relative Multicore Performance

      Static Web Server

      Redis

      Alternatives

      Servers of the Same Family

      INSTANCEvCPUsMEMORYAccelerators
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      ecs.c6.3xlarge 1224 GiB0
      ecs.c6.6xlarge 2448 GiB0
      ecs.c6.8xlarge 3264 GiB0
      ecs.c6.13xlarge 5296 GiB0

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