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[action] [PR:21772] Bump up /dev/shm size for Broadcom platforms to 512MB by default#22546

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mssonicbld merged 1 commit intosonic-net:202405from
mssonicbld:cherry/202405/21772
Jul 7, 2025
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[action] [PR:21772] Bump up /dev/shm size for Broadcom platforms to 512MB by default#22546
mssonicbld merged 1 commit intosonic-net:202405from
mssonicbld:cherry/202405/21772

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Why I did it

In the case of ASIC detection failures on Broadcom (or if the ASIC couldn't be detected in time), the /dev/shm partition in the syncd container will be only 64MB, which might cause issues if syncd/Broadcom SAI library needs more space than that.

Work item tracking
  • Microsoft ADO (number only):

How I did it

Since using a larger /dev/shm on its own doesn't cause any issues, bump up the default to 512MB. This should be enough for most platforms.

How to verify it

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

  • 201811
  • 201911
  • 202006
  • 202012
  • 202106
  • 202111
  • 202205
  • 202211
  • 202305

Tested branch (Please provide the tested image version)

Description for the changelog

Link to config_db schema for YANG module changes

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

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#### Why I did it

In the case of ASIC detection failures on Broadcom (or if the ASIC couldn't be detected in time), the `/dev/shm` partition in the syncd container will be only 64MB, which might cause issues if syncd/Broadcom SAI library needs more space than that.

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

#### How I did it

Since using a larger `/dev/shm` on its own doesn't cause any issues, bump up the default to 512MB. This should be enough for most platforms.

#### How to verify it

<!--
If PR needs to be backported, then the PR must be tested against the base branch and the earliest backport release branch and provide tested image version on these two branches. For example, if the PR is requested for master, 202211 and 202012, then the requester needs to provide test results on master and 202012.
-->

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

<!--
- Note we only backport fixes to a release branch, *not* features!
- Please also provide a reason for the backporting below.
- e.g.
- [x] 202006
-->

- [ ] 201811
- [ ] 201911
- [ ] 202006
- [ ] 202012
- [ ] 202106
- [ ] 202111
- [ ] 202205
- [ ] 202211
- [ ] 202305

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

<!--
- Please provide tested image version
- e.g.
- [x] 20201231.100
-->

- [ ] <!-- image version 1 -->
- [ ] <!-- image version 2 -->

#### Description for the changelog
<!--
Write a short (one line) summary that describes the changes in this
pull request for inclusion in the changelog:
-->

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 Ensure to add label/tag for the feature raised. example - PR#2174 under sonic-utilities repo. where, Generic Config and Update feature has been labelled as GCU.
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#### Link to config_db schema for YANG module changes
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Provide a link to config_db schema for the table for which YANG model
is defined
Link should point to correct section on https://github.com/Azure/sonic-buildimage/blob/master/src/sonic-yang-models/doc/Configuration.md
-->

#### A picture of a cute animal (not mandatory but encouraged)
@mssonicbld mssonicbld requested a review from lguohan as a code owner May 6, 2025 16:13
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Original PR: #21772

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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 16b2d13 into sonic-net:202405 Jul 7, 2025
10 of 18 checks passed
patrickmacarthur pushed a commit to patrickmacarthur/sonic-buildimage that referenced this pull request Aug 6, 2025
…05 (sonic-net#1325)

```<br>* 42416c5 - (HEAD -> 202405) Merge branch '202405' of https://github.com/sonic-net/sonic-buildimage into 202405 (2025-07-08) [Sonic Automation]
* 16b2d13 - (head/202405) Bump up /dev/shm size for Broadcom platforms to 512MB by default (sonic-net#22546) (2025-07-07) [mssonicbld]
* 569faca - Add patch for gnmi client to support extensive configurations (sonic-net#23151) (2025-07-07) [mssonicbld]<br>```
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