on 12-02-2016 7:01 AM
Do you configure Datagram size to 1500 according to EWA on Windows?
Hi experts,
I just find a recommend on EWA to increase Datagram size to 1500. This is new to me.
Just curious do you configure Datagram size to 1500 according to EWA on Windows? (Both DB servers and AASs, right). Thanks for your information.
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Datagram Size
Purpose
Microsoft Windows supports a fast I/O path that is utilized when sending "small" datagrams. The default setting for what is considered a small datagram is 1024 bytes; increasing this value to match your network MTU (normally 1500) can significantly improve network performance.
Procedure
To adjust the referred parameter:
Run Registry Editor (regedit)
Locate the following registry key HKLM\System\CurrentControlSet\Services\AFD\Parameters
Add the following new DWORD value:
Name: FastSendDatagramThreshold
Value: 1500 (decimal)
Reboot
Rating
GREEN: If the value exists and is 1500 or higher.
YELLOW: If the value does not exist or is set lower than 1500.
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Microsoft Windows supports a fast I/O path that is utilized when sending "small" datagrams. The default setting for what is considered a small datagram is 1024 bytes; increasing this value to match your network MTU (normally 1500) can significantly improve network performance. To adjust this parameter:
1. Run Registry Editor (regedit)
2. Locate the following registry key HKLM\System\CurrentControlSet\Services\AFD\Parameters
3. Add the following new DWORD value: Name: FastSendDatagramThreshold Value: 1500 (decimal)
4. Reboot
Hello Dennis,
Just now applied EWA suggestion, the same suggestion from Oracle (Point 6.1.3) https://docs.oracle.com/cd/E24290_01/coh.371/e22838/tune_perftune.htm#COHAG217
Best regards
Antonio
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