ecs.re6.4xlarge by Alibaba Cloud

ecs.re6.4xlarge is a ecs.re6 family (16 vCPUs, 256 GiB RAM, 0 GB storage) server offered by Alibaba Cloud with 16 vCPUs, 256 GiB of memory and 0 GB of storage. The pricing starts at 1.2329 USD per hour.
16 vCPU
256 GiB Memory
Spare SCore
13,935
(All-cores)
1,313
(Single-core)

Specifications

Server Metadata

Vendor ID
alicloud
Name
ecs.re6.4xlarge
Description
ecs.re6 family (16 vCPUs, 256 GiB RAM, 0 GB storage)
Family
ecs.re6
Hw Virt
Average Time To Start
16
Status
active
Observed At
2026-10-24T00:57:06.631574

Availability

REGION / IDSPOTONDEMAND
Beijing (CN) / cn-beijing
- 1.2329 USD/h
Hangzhou (CN) / cn-hangzhou
- 1.2329 USD/h
Shanghai (CN) / cn-shanghai
- 1.2329 USD/h
Shenzhen (CN) / cn-shenzhen
- 1.2329 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
8269CL
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
10.6
Scalability
66.25

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
      5 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 memory density and average multi-core performance for memory-bound enterprise workloads.

      Memory OptimizedGeneral Purpose

      Alibaba Cloud ecs.re6.4xlarge is a memory-optimized KVM-virtualized server featuring 16 dedicated vCPUs powered by an Intel Xeon 8269CL processor at 2.5 GHz, paired with 256.0 GB of RAM. This configuration provides a high memory-to-vCPU ratio of 16 GB per vCPU, though it lacks local storage and GPU accelerators. Performance benchmarks indicate a distinct tradeoff: single-core performance is weak, falling into the bottom 25% for single-threaded tasks, whereas multi-core and memory bandwidth benchmarks consistently achieve average, middle-tier results. This resource profile makes the instance qualitatively cost-effective for memory-intensive workloads that do not depend on high single-core CPU speeds. It is appropriate for in-memory databases, caching layers like Redis, and memory-heavy enterprise applications.

      Economics

      Average Price per Region

      Prices per Zone

      Lowest Prices

      Performance

      Workload Profiles

      0.69Score
      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) 1,326,396 ops/sec 1,919,289 ops/sec 0.68 50.00% 50.00% -18.00%
      Redis RPS (pipeline=16, SET) 7,291,940 ops/sec 11,728,058 ops/sec 0.61 20.00% 20.00% -9.40%
      PassMark Memory Mark (composite) 2,012 2,416 0.83 10.00% 10.00% -1.80%
      Memory bandwidth (read, 16 MB ~ L3) 73,654 MB/sec 108,466 MB/sec 0.67 10.00% 10.00% -3.90%
      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: 1,052

      Geekbench Multi-Core

      Score: 6,709

      Passmark CPU Scores

      BENCHMARKSCORE
      Mark
      		 14,793
      Compression
      		 219,659
      Encryption
      		 6,468
      Extended Instructions
      		 12,893
      Floating Point Maths
      		 25,016
      Integer Maths
      		 46,383
      Physics
      		 1,235
      Prime Numbers
      		 53
      Single Threaded
      		 1,961
      String Sorting
      		 28,370

      Passmark Memory Scores

      BENCHMARKSCORE
      Memory Mark
      		 2,012
      Database Operations
      		 5,078
      Memory Latency
      		 67
      Memory Read Cached
      		 22,377
      Memory Read Uncached
      		 7,128
      Memory Write
      		 7,015

      Stress-ng Stressors

      CPU integerSingleMultiScaling
      atomic
      		 215.68 219.67 1.02×
      bitops
      		 115,194 1,019,055 8.85×
      branch
      		 145,134 1,743,635 12.01×
      funccall
      		 533.46 4,448 8.34×
      funcret
      		 10,769 124,396 11.55×
      hash
      		 122,912 1,445,466 11.76×
      intmath
      		 21,315 254,338 11.93×
      nop
      		 179,930 1,238,503 6.88×
      prime
      		 306,242 2,704,273 8.83×
      rotate
      		 91,058 923,061 10.14×
      str
      		 782,142 7,938,023 10.15×
      wcs
      		 481,124 4,387,184 9.12×
      CryptographySingleMultiScaling
      crypt
      		 2,293 17,835 7.78×
      CompressionSingleMultiScaling
      jpeg
      		 554.18 4,998 9.02×
      zlib
      		 45.74 590.8 12.92×
      HypervisorSingleMultiScaling
      clock
      		 15,942 163,621 10.26×
      clone
      		 331.53 2,277 6.87×
      context
      		 1,777 18,911 10.64×
      cpu-sched
      		 68.34 1,056 15.45×
      eventfd
      		 77,184 810,160 10.50×
      fault
      		 11,610 115,640 9.96×
      fork
      		 3,461 34,666 10.02×
      getrandom
      		 42,441 417,533 9.84×
      hrtimers
      		 135,088 1,620,602 12.00×
      mprotect
      		 973,402 2,137,102 2.20×
      mtx
      		 12,347,109 381,531,391 30.90×
      munmap
      		 2,434 25,200 10.36×
      null
      		 189,947 1,873,903 9.87×
      pipe
      		 853,816 4,734,775 5.55×
      priv-instr
      		 403,776 4,096,544 10.15×
      resched
      		 3,068,678 1,568,201 0.51×
      switch
      		 228,839 1,873,135 8.19×
      timermix
      		 363,355 4,159,837 11.45×
      tlb-shootdown
      		 11,637 29,386 2.53×
      tsc
      		 938,437 10,425,434 11.11×
      usersyscall
      		 287,578 2,894,862 10.07×
      vdso
      		 74,671,211 898,849,407 12.04×
      vfork
      		 26,256 172,226 6.56×
      x86syscall
      		 2,187,981 21,345,849 9.76×
      yield
      		 7,769,721 7,980,532 1.03×
      zero
      		 1,477,178 13,877,242 9.39×
      CPU float/SIMDSingleMultiScaling
      eigen
      		 15,325 150,274 9.81×
      expmath
      		 2,520 30,789 12.22×
      fma
      		 548,483 7,165,455 13.06×
      fp
      		 124.8 1,381 11.07×
      fractal
      		 4.6 54.2 11.78×
      hyperbolic
      		 2,615 32,892 12.58×
      logmath
      		 4,296 51,584 12.01×
      matrix
      		 2,841 36,778 12.94×
      matrix-3d
      		 344.84 2,309 6.70×
      monte-carlo
      		 106.37 1,028 9.66×
      mpfr
      		 1,153 9,892 8.58×
      powmath
      		 1,495 18,176 12.16×
      trig
      		 1,613 17,519 10.86×
      veccmp
      		 14,714 120,585 8.20×
      vecfp
      		 1,252 12,478 9.96×
      vecmath
      		 2,057 25,980 12.63×
      vecshuf
      		 531.49 4,560 8.58×
      vecwide
      		 22,704 204,465 9.01×
      AlgorithmsSingleMultiScaling
      bitonicsort
      		 6.8 62.8 9.24×
      bsearch
      		 235.43 2,119 9.00×
      bubblesort
      		 0.6 6.4 10.67×
      fibsearch
      		 264.35 2,677 10.13×
      heapsort
      		 7.8 77 9.87×
      hsearch
      		 4,721 46,558 9.86×
      insertionsort
      		 7.6 60.6 7.97×
      malloc
      		 1,319,059 21,311,853 16.16×
      mcontend
      		 115.32 3,845 33.35×
      mergesort
      		 24.8 255.99 10.32×
      qsort
      		 17.6 172.2 9.78×
      skiplist
      		 4,942 55,842 11.30×
      tree
      		 0.8 6.4 8.00×
      MemorySingleMultiScaling
      cache
      		 214,892 292,156 1.36×
      cachehammer
      		 331,332 4,551,270 13.74×
      cacheline
      		 43.11 512.06 11.88×
      l1cache
      		 213.32 1,852 8.68×
      memcpy
      		 358.82 2,900 8.08×
      memrate
      		 0.97 8.55 8.81×
      memthrash
      		 187.38 462.79 2.47×
      ptr-chase
      		 8,515,825 127,750,415 15.00×
      spinmem
      		 360.79 1,162 3.22×
      stream
      		 22.61 2,896 128.09×
      vm
      		 52,696 293,289 5.57×

      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.re6.16xlarge 641024 GiB0
      ecs.re6.26xlarge 1041536 GiB0
      ecs.re6.52xlarge 2083072 GiB0

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      ecs.re6.4xlarge FAQs