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QoS解决了从空闲到繁忙的工作负载出现的突然延迟和CPU利用率问题

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适用场景

  • ONTAP 9
  • ONTAP Select v9.12.1 及更高版本
  • FAS/AFA系统

问题描述

  • 中央处理器 (CPU) 持续处于高、接近或 100% 的
  • 写入任意位置文件布局 ( WAFL)WAFL_Ex可能是最繁忙的域之一(数据处理发生的地方)。
  • 主机报告在一天中的特定时间段内输入/输出 (IO) 等待时间较长。
  • 客户端报告访问多个共享时速度缓慢,并且在同一时间戳内可能会注意到Active IQ Unified Manager ( AIQUM) 的延迟增加。

2009606555 - 问题.png

  • 延迟突然增加且更高。
    • NFS 可能会受到影响。
  • sysstat -M 1可用于检查最繁忙的域。
    • 示例:sysstat 输出显示CPU因用户工作负载增加而增加(为便于阅读、删除了列)
Cluster::> node run -node <node> -command sysstat -x 1 CPU NFS CIFS HTTP Total Net kB/s HDD kB/s in out read write 11% 1324 0 0 1324 169 131 5300 0 28% 72 0 0 72 483 526 4928 12 53% 175 0 0 175 254 407 5176 24 23% 143 0 0 143 146 72 4752 0 12% 230 0 0 230 134 259 5808 24 40% 5766 0 0 5766 207 720 44336 36956 53% 108 0 0 108 15698 14391 32340 24 46% 30 0 0 30 30975 30269 29900 0 87% 32124 0 0 32124 576397 53287 203513 12 99% 44334 0 0 44334 659406 45518 256931 251353 99% 43692 0 0 43692 609739 16930 263599 565448 99% 44492 0 0 44492 633509 41562 261366 116257

 

 

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