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calico

Overview

DOK provides the necessary images for installing the Calico CNI. Users can switch from the default Flannel to Calico. In the privatization scenario, it is generally recommended to use ipip mode.

Benchmark

As ipip is also an Overlay mode network solution, which is similar to Flannel’s vxlan in terms of performance.

=========================================================
 Benchmark Results
=========================================================
 Name            : knb-21161
 Date            : 2022-08-26 08:40:34 UTC
 Generator       : knb
 Version         : 1.5.0
 Server          : node2
 Client          : node3
 UDP Socket size : auto
=========================================================
  Discovered CPU         : Intel Xeon Processor (Skylake, IBRS)
  Discovered Kernel      : 5.4.127-1.el7.elrepo.x86_64
  Discovered k8s version : v1.21.7
  Discovered MTU         : 1480
  Idle :
    bandwidth = 0 Mbit/s
    client cpu = total 8.86% (user 3.62%, nice 0.02%, system 4.92%, iowait 0.14%, steal 0.16%)
    server cpu = total 8.67% (user 3.33%, nice 0.00%, system 5.06%, iowait 0.03%, steal 0.25%)
    client ram = 1373 MB
    server ram = 1206 MB
  Pod to pod :
    TCP :
      bandwidth = 891 Mbit/s
      client cpu = total 13.43% (user 2.32%, nice 0.02%, system 10.96%, iowait 0.08%, steal 0.05%)
      server cpu = total 15.27% (user 2.33%, nice 0.02%, system 12.80%, iowait 0.02%, steal 0.10%)
      client ram = 1307 MB
      server ram = 1203 MB
    UDP :
      bandwidth = 852 Mbit/s
      client cpu = total 29.86% (user 2.91%, nice 0.07%, system 26.81%, iowait 0.02%, steal 0.05%)
      server cpu = total 15.11% (user 4.35%, nice 0.03%, system 10.68%, iowait 0.00%, steal 0.05%)
      client ram = 1300 MB
      server ram = 1200 MB
  Pod to Service :
    TCP :
      bandwidth = 901 Mbit/s
      client cpu = total 9.89% (user 2.94%, nice 0.05%, system 6.76%, iowait 0.12%, steal 0.02%)
      server cpu = total 13.35% (user 2.21%, nice 0.08%, system 10.95%, iowait 0.03%, steal 0.08%)
      client ram = 1301 MB
      server ram = 1200 MB
    UDP :
      bandwidth = 651 Mbit/s
      client cpu = total 33.04% (user 4.61%, nice 0.02%, system 28.16%, iowait 0.02%, steal 0.23%)
      server cpu = total 18.11% (user 5.14%, nice 0.00%, system 12.39%, iowait 0.00%, steal 0.58%)
      client ram = 1298 MB
      server ram = 1200 MB
=========================================================

Reference