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[action] [PR:23343] TH5-512 ingress and egress lossy queue buffer size change#23394

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mssonicbld merged 1 commit intosonic-net:202505from
mssonicbld:cherry/202505/23343
Jul 19, 2025
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[action] [PR:23343] TH5-512 ingress and egress lossy queue buffer size change#23394
mssonicbld merged 1 commit intosonic-net:202505from
mssonicbld:cherry/202505/23343

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@mssonicbld
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Why I did it

BRCM SAI 13.2.1 increases the pkt trim buffer pool to 1.7MB, leading to the reduction of available lossy queue buffer.

Without this change, there will be a syncd crash on default buffer profile pairing with SAI 13.2.1.

Work item tracking
  • Microsoft ADO (number only):

How I did it

Reduce default ingress and egress lossy buffer size from 165307264 with 161999982

How to verify it

Verified on Arista-7060X6-64PE-B-C512S2

Which release branch to backport (provide reason below if selected)

  • 202412

Tested branch (Please provide the tested image version)

  • 202412.b27

Description for the changelog

BRCM SAI 13.2.1 increases the pkt trim buffer pool to 1.7MB, available lossy queue buffer size to be reduced accordingly.

Link to config_db schema for YANG module changes

A picture of a cute animal (not mandatory but encouraged)

#### Why I did it

BRCM SAI 13.2.1 increases the pkt trim buffer pool to 1.7MB, leading to the reduction of available lossy queue buffer.

Without this change, there will be a syncd crash on default buffer profile pairing with SAI 13.2.1.

##### Work item tracking
- Microsoft ADO **(number only)**:

#### How I did it

Reduce default ingress and egress lossy buffer size from 165307264 with 161999982

#### How to verify it

Verified on Arista-7060X6-64PE-B-C512S2

#### Which release branch to backport (provide reason below if selected)

- [x] 202412

#### Tested branch (Please provide the tested image version)

- [x] 202412.b27

#### Description for the changelog

BRCM SAI 13.2.1 increases the pkt trim buffer pool to 1.7MB, available lossy queue buffer size to be reduced accordingly.

#### Link to config_db schema for YANG module changes

#### A picture of a cute animal (not mandatory but encouraged)
@mssonicbld
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Original PR: #23343

@mssonicbld
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/azp run Azure.sonic-buildimage

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Azure Pipelines successfully started running 1 pipeline(s).

@mssonicbld mssonicbld merged commit 0607723 into sonic-net:202505 Jul 19, 2025
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