[Mellanox] Optimize SFP modules initialization #67
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keboliu
reviewed
Apr 27, 2021
Done. |
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Unit test added. |
keboliu
approved these changes
Apr 30, 2021
Originally, SFP modules were always accessed from platform daemons, and arbitrary SFP module can be accessed in the daemon. All SFP modules were initialized in one-shot once one of the following chassis APIs called - get_all_sfps - get_sfp_numbers - get_sfp Recently, we noticed that SFP modules can also be accessed from CLI, eg. the latest refactor of sfputil. In this case, only one SFP module is accessed in the chassis object's life cycle. To initialize all SFP modules in one-shot is waste of time. The new optimized flow is: - get_sfp called, only initialize the SFP module being accessed all other elements in _sfp_list are None - get_all_sfps and get_sfp_numbers called, initialize all SFP modules as usual Signed-off-by: Stephen Sun <stephens@nvidia.com>
Signed-off-by: Stephen Sun <stephens@nvidia.com>
Signed-off-by: Stephen Sun <stephens@nvidia.com>
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stephenxs
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that referenced
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May 19, 2022
[sonic-linkmgrd][202012] submodule update 3d13ff2 Jing Zhang Wed May 4 10:07:14 2022 -0700 Add doc for default route related changes (#63) c703be4 Jing Zhang Mon May 2 13:27:54 2022 -0700 Reset WaitActiveUp count before switching to active (#70) 86eb727 Jing Zhang Wed Apr 27 10:35:05 2022 -0700 lower log level to warning (#69) e22c736 Jing Zhang Mon May 2 13:33:24 2022 -0700 [202012] Avoid proactively switching to active if default route is missing (#67) d4f282b Jing Zhang Thu Apr 28 18:35:11 2022 -0700 [202012] Add support to enable switchover time measurement (with link prober interval decreased to 10ms) feature (#66) sign-off: Jing Zhang [zhangjing@microsoft.com](mailto:zhangjing@microsoft.com)
stephenxs
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Jul 3, 2023
…utomatically (sonic-net#15548) #### Why I did it src/sonic-host-services ``` * 508d642 - (HEAD -> master, origin/master, origin/HEAD) [actions] Support Semgrep by Github Actions (#67) (31 hours ago) [Mai Bui] ``` #### How I did it #### How to verify it #### Description for the changelog
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Why I did it
Originally, SFP modules were always accessed from platform daemons, and arbitrary SFP modules can be accessed in the daemon. So all SFP modules were initialized in one shot once one of the following chassis APIs called
Recently, we noticed that SFP modules can also be accessed from CLI, eg. the latest refactor of
sfputil.In this case, only one SFP module is accessed in the chassis object's life cycle.
To initialize all SFP modules in one shot is waste of time and causes the CLI to take much more time to finish.
So we would like to optimize the initialization flow by introducing a two-phase initialization approach:
chassis._sfp_listhas been initialized with proper length and all elements beingNonechassis._sfp_listare createdIf the relevant function is called,
get_sfp, only partial initialization will be done, and then the specific SFP module is initialized.get_all_sfpsorget_num_sfps, full initialization will be done, which means all SFP modules are initialized.Signed-off-by: Stephen Sun stephens@nvidia.com
How I did it
How to verify it
Manually test. APIs are called in the following order:
get_sfpand thenget_all_sfps.get_all_sfpsget_num_sfpsWhich release branch to backport (provide reason below if selected)
Description for the changelog
A picture of a cute animal (not mandatory but encouraged)