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VMware ESXi主机发现E系列阵列的IOPS较低

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esg<a>2009966095</a>
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适用场景

  • E系列
  • VMware ESXi

问题描述

VMware ESXi出错:

I/O latency increased from average value of 16649 microseconds to 366839 microseconds""。

故障排除步骤

  • 验证用于创建卷组或磁盘池的驱动器数量。
  • 根据磁盘转数计算OP。
    • 示例:如果磁盘RPM为7200,则每个驱动器最多可支持85-100 IOPS。
    • 公式number of drive in the volume group or disk pool * iops

注意:在计算磁盘池的总IOPS时,需要排除 保留驱动器计数。

基于磁盘rpm的IOPS表

Device    Type  IOPS        Interface
=========== ===== ================ ===========
7,200 rpm   SATA  ~75-100 IOPS[2]  SATA 3 Gb/s
10,000 rpm  SATA  ~125-150 IOPS[2] SATA 3 Gb/s
10,000 rpm  SAS   ~140 IOPS[2]    SAS
15,000 rpm  SAS   ~175-210 IOPS[2] SAS

  • 验证 ISCSI-STATISTICS.CSV 文件中是否报告了任何错误。

  • 检查驱动器端是否有任何打开的和排队的请求。

-> chall 0
 
chAll (Tick 1261153685) ==> 03/07/24-22:59:11
 
2806-A 08.74.01.00
.....Channels.....:...........Target...........:............Initiator..........:               
       Link :ITN :..........IOs..........:ITN :............IOs...........:.........Busy.........Idle.
  Ch H/D STP Down :cnt : Open  Completed  Errs :cnt : Qd  Open Completed  Errs:       Ms       Ms 
---- --- --- ---- :--- :----- ---------- ----- :--- :--- ----- ---------- -----: ------------ -------------
  0 Drv SAS   0 :  1 :   0    42039    0 : 10 :  0   33  63446794    0:    51609897    3232649
  1 Drv SAS   0 :  1 :   0    41952    0 : 10 : 21   45  54312522    0:    51465021    3377524
  2 Hst iSC   0 :  1 :   0   22222954   673 :  0 :  0    0      0    0:    54842546       0
  3 Hst iSC   0 :  1 :   36   22218796   462 :  0 :  0    0      0    0:    54842546       0
  4 Drv iSA   0 :  0 :   0      0    0 :  1 :  0    0     315    0:      489    54842056

  • 验证网络级别是否存在任何数据包丢弃/错误。

 

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