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asked 2023-02-27 12:18:10 +0000

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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 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

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 very high, compared to 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 same read on the laptop with the copy issue SMB2 Service Response Time Statistics good copy

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