Revision history [back]
SMB2 copy issue and SRT
I am having an issue, copying a single large file (2GB) from a Server 2016 to a Windows 10 client. Both client and server on same network and subnet
2 laptops (different models), on one of the laptops copy takes about 5 mins as expected. One another laptop copy takes about 30 mins and in Windwos copy GUi I can see the transfer rate drop to 0 bytes per second and then increase
I took wireshark trace from both laptops and I am suspecting issue with the SMB2.
I did a SMB2 SRT analysis on the 2 laptops and on the laptop with slow copy the READ SRT sum value is very high, compared to the same read on the laptop with the good copy
Am I correct in thinking the issue is related to SMB on the client side
SMB2 copy issue and SRT
I am having an issue, copying a single large file (2GB) from a Server 2016 to a Windows 10 client. Both client and server on same network and subnet
2 laptops (different models), on one of the laptops copy takes about 5 mins as expected. One another laptop copy takes about 30 mins and in Windwos copy GUi I can see the transfer rate drop to 0 bytes per second and then increase
I took wireshark trace from both laptops and I am suspecting issue with the SMB2.
I did a SMB2 SRT analysis on the 2 laptops and on the laptop with slow copy the READ SRT sum value is very high, compared to the same read on high
this is the SRT for the laptop with the good copyno issues
SMB2 Service Response Time Statistics
Procedure Calls Min SRT (s) Max SRT (s) Avg SRT (s) Sum SRT (s)
SMB2 Close 21 0.000143 0.000475 0.000301 0.006313 Create 150 0.000204 0.033607 0.004962 0.744270 Find 250 0.000244 0.178704 0.016421 4.105257 GetInfo 23 0.000124 0.000405 0.000273 0.006285 Ioctl 11 0.000224 0.000703 0.000365 0.004018 Negotiate Protocol 5 0.000321 0.000595 0.000469 0.002344 Notify 2 102.810902 102.811230 102.811066 205.622132 Read 251 0.000152 0.110824 0.024186 6.070720 Session Setup 58 0.000242 0.004355 0.000821 0.047631 Tree Connect 11 0.000144 0.000395 0.000209 0.002300
Write 3 0.000208 0.000379 0.000289 0.000868
this is the SRT for the laptop with the copy issue SMB2 Service Response Time Statistics
Procedure Calls Min SRT (s) Max SRT (s) Avg SRT (s) Sum SRT (s)
Close 3 0.000174 0.000485 0.000286 0.000857 Create 3 0.000221 0.000527 0.000375 0.001124 GetInfo 2 0.000151 0.000178 0.000165 0.000329 Ioctl 27 0.000171 0.004376 0.000832 0.022455 Negotiate Protocol 3 0.000503 0.000587 0.000538 0.001613 Read 1351 0.000185 0.108983 0.048389 65.373585 Session Setup 8 0.000416 0.014741 0.005360 0.042879 Tree Connect 22 0.000226 0.001949 0.000519 0.011428 Tree Disconnect 20 0.000133 0.000308 0.000205 0.004095
Write 2 0.000345 0.000353 0.000349 0.000698
Am I correct in thinking the issue is related to SMB on the client side
SMB2 copy issue and SRT
I am having an issue, copying a single large file (2GB) from a Server 2016 to a Windows 10 client. Both client and server on same network and subnet
2 laptops (different models), on one of the laptops copy takes about 5 mins as expected. One another laptop copy takes about 30 mins and in Windwos copy GUi I can see the transfer rate drop to 0 bytes per second and then increase
I took wireshark trace from both laptops and I am suspecting issue with the SMB2.
I did a SMB2 SRT analysis on the 2 laptops and on the laptop with slow copy the READ SRT sum value is high
this is the SRT for the laptop with no issues
SMB2 Service Response Time Statistics
Procedure Calls Min SRT (s) Max SRT (s) Avg SRT (s) Sum SRT (s)
SMB2 Close 21 0.000143 0.000475 0.000301 0.006313 Create 150 0.000204 0.033607 0.004962 0.744270 Find 250 0.000244 0.178704 0.016421 4.105257 GetInfo 23 0.000124 0.000405 0.000273 0.006285 Ioctl 11 0.000224 0.000703 0.000365 0.004018 Negotiate Protocol 5 0.000321 0.000595 0.000469 0.002344 Notify 2 102.810902 102.811230 102.811066 205.622132 Read 251 0.000152 0.110824 0.024186 6.070720 Session Setup 58 0.000242 0.004355 0.000821 0.047631 Tree Connect 11 0.000144 0.000395 0.000209 0.002300
Write 3 0.000208 0.000379 0.000289 0.000868
this is the SRT for the laptop with the copy issue
issue
SMB2 Service Response Time Statistics
Procedure Calls Min SRT (s) Max SRT (s) Avg SRT (s) Sum SRT (s)
Close 3 0.000174 0.000485 0.000286 0.000857 Create 3 0.000221 0.000527 0.000375 0.001124 GetInfo 2 0.000151 0.000178 0.000165 0.000329 Ioctl 27 0.000171 0.004376 0.000832 0.022455 Negotiate Protocol 3 0.000503 0.000587 0.000538 0.001613 Read 1351 0.000185 0.108983 0.048389 65.373585 Session Setup 8 0.000416 0.014741 0.005360 0.042879 Tree Connect 22 0.000226 0.001949 0.000519 0.011428 Tree Disconnect 20 0.000133 0.000308 0.000205 0.004095
Write 2 0.000345 0.000353 0.000349 0.000698
Am I correct in thinking the issue is related to SMB on the client side
SMB2 copy issue and SRT
I am having an issue, copying a single large file (2GB) from a Server 2016 to a Windows 10 client. Both client and server on same network and subnet
2 laptops (different models), on one of the laptops copy takes about 5 mins as expected. One another laptop copy takes about 30 mins and in Windwos copy GUi I can see the transfer rate drop to 0 bytes per second and then increase
I took wireshark trace from both laptops and I am suspecting issue with the SMB2.
I did a SMB2 SRT analysis on the 2 laptops and on the laptop with slow copy the READ SRT sum value is high
this is the SRT for the laptop with no issues
=========================================================================== SMB2 Service Response Time Statistics
Procedure Calls Min SRT (s) Max SRT (s) Avg SRT (s) Sum SRT (s)
SMB2 Close 21 0.000143 0.000475 0.000301 0.006313 Create 150 0.000204 0.033607 0.004962 0.744270 Find 250 0.000244 0.178704 0.016421 4.105257 GetInfo 23 0.000124 0.000405 0.000273 0.006285 Ioctl 11 0.000224 0.000703 0.000365 0.004018 Negotiate Protocol 5 0.000321 0.000595 0.000469 0.002344 Notify 2 102.810902 102.811230 102.811066 205.622132 Read 251 0.000152 0.110824 0.024186 6.070720 Session Setup 58 0.000242 0.004355 0.000821 0.047631 Tree Connect 11 0.000144 0.000395 0.000209 0.002300
Write 3 0.000208 0.000379 0.000289 0.000868
this is the SRT for the laptop with the copy issue
=========================================================================== SMB2 Service Response Time Statistics
Procedure Calls Min SRT (s) Max SRT (s) Avg SRT (s) Sum SRT (s)
Close 3 0.000174 0.000485 0.000286 0.000857
Create 3 0.000221 0.000527 0.000375 0.001124
GetInfo 2 0.000151 0.000178 0.000165 0.000329
Ioctl 27 0.000171 0.004376 0.000832 0.022455
Negotiate Protocol 3 0.000503 0.000587 0.000538 0.001613
Read 1351 0.000185 0.108983 0.048389 65.373585
65.373585 Session Setup 8 0.000416 0.014741 0.005360 0.042879
Tree Connect 22 0.000226 0.001949 0.000519 0.011428
Tree Disconnect 20 0.000133 0.000308 0.000205 0.004095
Write 2 0.000345 0.000353 0.000349 0.000698
Am I correct in thinking the issue is related to SMB on the client side