跳转到主内容

在空闲的 NVMe-oF AFF 系统上 CPU 高于预期

Views:
47
Visibility:
Public
Votes:
0
Category:
ontap-9
Specialty:
perf
Last Updated:

适用于

  • ONTAP 9
  • 所有配备 NVMe 硬盘并采用 NVMe over Fabrics(NVMe-oF)配置的 AFF 系统
  • 所有配备 NVMe 硬盘并采用 NVMe over TCP(NVMe/TCP)配置的 AFF 系统

问题

  • 当客户端连接但客户端 IOPS 为 0 时,CPU 可能空闲约 10% 或 20%
  • 示例:来自 A400 的节点 shell 上的 sysstat -m 显示内核 0-14 为 0%,但 15-19 为 40%(为了可读性删除了一些行):
Cluster::> node run -node <node> sysstat -m 1
CPU15 CPU16 CPU17 CPU18 CPU19
  44%   38%   39%   41%   38%
  44%   37%   40%   42%   38%
  45%   38%   39%   44%   38%
  43%   37%   40%   41%   38%
  44%   37%   39%   41%   38%
  45%   45%   52%   46%   42%
  43%   37%   39%   42%   38%
  44%   38%   39%   40%   38%
  44%   41%   40%   41%   38%
  44%   38%   38%   41%   38%

Sign in to view the entire content of this KB article.

New to NetApp?

Learn more about our award-winning Support

NetApp provides no representations or warranties regarding the accuracy or reliability or serviceability of any information or recommendations provided in this publication or with respect to any results that may be obtained by the use of the information or observance of any recommendations provided herein. The information in this document is distributed AS IS and the use of this information or the implementation of any recommendations or techniques herein is a customer's responsibility and depends on the customer's ability to evaluate and integrate them into the customer's operational environment. This document and the information contained herein may be used solely in connection with the NetApp products discussed in this document.