Windows Photo App shows excessive OPEN/CLOSE ops on CIFS shares
Applies to
- ONTAP 9
- CIFS access for client Home Directories
- Windows 10 version 17134.0 or higher
- Microsoft Photos App
Issue
- High CIFS workload, resulting in high CPU utilization
CPU NFS CIFS HTTP Total Net kB/s Disk kB/s Tape kB/s Cache Cache CP CP_Ty CP_Ph Disk OTHER FCP iSCSI FCP kB/s iSCSI kB/s
in out read write read write age hit time [T--H--F--N--B--O--#--:] [n--v--p--f] util in out in out
95% 70 114323 0 114908 71553 84684 117551 87848 0 0 20s 96% 85% 2--0--0--0--0--0--0--0 0--1--0--1 22% 250 265 0 1058 6035 0 0
96% 1 116019 0 116547 73856 75943 173269 86076 0 0 29s 95% 100% 0--0--0--0--0--0--0--2 0--0--0--2 64% 206 321 0 1001 6408 0 0
93% 106 116043 0 116609 73545 72515 76756 134080 0 0 29s 96% 100% 0--0--0--0--0--0--0--2 0--0--0--2 78% 188 272 0 1348 4717 0 0
93% 74 115033 0 115400 78340 78045 63540 139640 0 0 29s 96% 100% 0--0--0--0--0--0--0--2 0--0--0--2 64% 55 238 0 853 3488 0 0
90% 3 112775 0 113229 72000 64901 41055 16200 0 0 29s 95% 40% 0--0--0--0--0--0--0--0 0--0--0--0 30% 167 284 0 866 4731 0 0
85% 35 113886 0 114360 70430 53293 33400 0 0 0 28s 95% 0% 0--0--0--0--0--0--0--0 0--0--0--0 18% 131 308 0 868 5214 0 0
86% 1 116842 0 117485 76608 82884 40727 24 0 0 28s 95% 0% 0--0--0--0--0--0--0--0 0--0--0--0 15% 367 275 0 1037 4852 0 0
87% 84 111570 0 112246 73045 72241 45836 0 0 0 33s 95% 1% 1--0--0--0--0--0--0--0 1--0--0--0 19% 368 224 0 386 3231 0 0
86% 3 113944 0 114278 76678 108953 47856 1966 0 0 30s 95% 32% 0--0--0--0--0--0--0--0 0--0--0--0 16% 82 249 0 1078 5477 0 0
86% 2 115645 0 116097 82113 97878 53347 5003 0 0 34s 94% 0% 0--0--0--0--0--0--0--0 0--0--0--0 16% 57 393 0 3054 7584 0 0
91% 4 110919 0 111620 74155 83876 145156 26832 0 0 30s 95% 37% 0--0--0--0--0--1--0--0 0--0--1--0 21% 312 385 0 1305 5110 0 0
90% 23 110348 0 110756 74581 82447 62008 61932 0 0 26s 97% 100% 0--0--0--0--0--0--0--1 0--0--0--1 18% 127 258 0 3811 6574 0 0
88% 4 107697 0 108168 67419 61269 47776 133283 0 0 26s 97% 100% 0--0--0--0--0--0--0--1 0--0--0--1 25% 200 267 0 17540 4281 0 0
89% 22 110561 0 111419 69615 74923 48980 4280 0 0 26s 94% 15% 0--0--0--0--0--0--0--0 0--0--0--0 18% 292 544 0 1598 11695 0 0
90% 4 110014 0 111410 61657 57517 85800 101908 0 0 38s 93% 81% 1--0--0--0--0--0--0--0 0--0--1--0 23% 153 1239 0 4871 11556 0 0
88% 1 112781 0 113187 63139 82333 69492 75368 0 0 38s 93% 62% 0--0--0--0--0--0--0--0 0--0--0--0 17% 61 344 0 3486 6922 0 0
90% 32 113379 0 113876 62529 77071 39048 32 0 0 36s 94% 0% 0--0--0--0--0--0--0--0 0--0--0--0 17% 194 271 0 1271 6509 0 0
- Open/Close operations constitutes majority of CIFS ops.
smb2:cifssvm:op_pct.GetAttr:36%
smb2:cifssvm:op_pct.SetAttr:0%
smb2:cifssvm:op_pct.Read:0%
smb2:cifssvm:op_pct.Write:0%
smb2:cifssvm:op_pct.Lock:0%
smb2:cifssvm:op_pct.Open/Close:62%
smb2:cifssvm:op_pct.Directory:0%
smb2:cifssvm:op_pct.Other:0%
Use the following commands to collect, show and stop the statistics:
- Use the
statistics startcommand to start the collection per the smb2 object and op_pct counter - Use the
statistics showcommand to show the results - Use the
statistics stopcommand to stop the collection sample
Example:
cluster1::*> statistics start -object smb2 -counter op_pct
Statistics collection is being started for sample-id: sample_10
cluster1::*> statistics show -object smb2 -counter op_pct
Object: smb2
Instance: svm1
Elapsed-time: 10s
Scope: cluster1
Counter Value
-------------------------------- --------------------------------
op_pct -
GetAttr 0
SetAttr 0
Read 0
Write 100
Lock 0
Open/Close 0
Directory 0
Other 0
op_pct -
GetAttr 0
SetAttr 0
Read 0
Write 100
Lock 0
Open/Close 0
Directory 0
Other 0
2 entries were displayed.
cluster1::*> statistics stop -sample-id sample_10
Statistics collection is being stopped for sample-id: sample_10