Skip to main content

NetApp_Insight_2020.png 

NetApp Knowledgebase

Windows Explorer hangs for a couple of seconds while opening or renaming the folders on FlexGroup CIFS share in ONTAP 9.4+

Views:
300
Visibility:
Public
Votes:
0
Category:
ontap-9
Specialty:
cifs
Last Updated:

Applies to

  • ONTAP 9.4 or higher
  • CIFS share
  • Flexgroups

Issue

  1. Windows Explorer hangs for a couple of seconds while opening or renaming the folders.
  2. Long delay for SMB Create responses could be confirmed from the packet traces; the longest delay is up to 3 or 4 seconds. 

WireShark\SMB2 Service Response Time Statistics
 


Find out the long running Create responses using the following filter:
smb2.cmd == 5 && smb2.time >=3
This will list out all the SMB2 Create responses that take longer than 3 seconds.

All these long running responses are Compound Requests: Create + Notify


In perfstat, the only delayed responses (in the range of 2s ~ 4s are from SMB Notify requests, while the SMB CREATE requests do not witness any high latency outliers. This is different with the observations from packet traces. 
smb2:svm_name:latency_histogram.<1s:0
smb2:svm_name:latency_histogram.<2s:0
smb2:svm_name:latency_histogram.<4s:4
smb2:svm_name:latency_histogram.<6s:0
smb2:svm_name:latency_histogram.<8s:0
smb2:svm_name:latency_histogram.<10s:0

smb2:svm_cifs:create_latency_histogram.<1s:0
smb2:svm_cifs:create_latency_histogram.<2s:0
smb2:svm_cifs:create_latency_histogram.<4s:0
smb2:svm_cifs:create_latency_histogram.<6s:0
smb2:svm_cifs:create_latency_histogram.<8s:0
smb2:svm_cifs:create_latency_histogram.<10s:0

smb2:svm_cifs:change_notify_latency_histogram.<1s:0
smb2:svm_cifs:change_notify_latency_histogram.<2s:0
smb2:svm_cifs:change_notify_latency_histogram.<4s:4
smb2:svm_cifs:change_notify_latency_histogram.<6s:0
smb2:svm_cifs:change_notify_latency_histogram.<8s:0
smb2:svm_cifs:change_notify_latency_histogram.<10s:0

 

CUSTOMER EXCLUSIVE CONTENT

Registered NetApp customers get unlimited access to our dynamic Knowledge Base.

New authoritative content is published and updated each day by our team of experts.

Current Customer or Partner?

Sign In for unlimited access

New to NetApp?

Learn more about our award-winning Support