From: "Jason Lou" <yun.lou@intel.com>
To: Zeng, Star <star.zeng@intel.com>,devel@edk2.groups.io
Subject: Re: [edk2-devel] [PATCH v1 1/1] UefiCpuPkg: Remove PEI/DXE instances of CpuTimerLib.
Date: Thu, 25 Mar 2021 00:58:00 -0700 [thread overview]
Message-ID: <20843.1616659080240333148@groups.io> (raw)
In-Reply-To: <DM6PR11MB405884AE6FBF71C6F8455DBCE3360@DM6PR11MB4058.namprd11.prod.outlook.com>
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Hi Star, sorry for my late response.
Yes, HOB search time is related to the sequence of HOB generation.
Some data collected on the test platform:
1. The time range required to search for the specified HOB: 20ns ~ 2700ns
Search for the 1st HOB(PHIT HOB): 20ns
Search for the last HOB: about 2700ns
2. The time required to search for CpuCrystalFrequencyHob HOB: about 2000ns.
The actual delay of NanoSecondDelay function is longer than the expected delay.
If any questions, please feel free let me know, thanks
Jason Lou
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next prev parent reply other threads:[~2021-03-25 7:58 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-25 3:57 [PATCH v1 1/1] UefiCpuPkg: Remove PEI/DXE instances of CpuTimerLib yun.lou
2020-09-25 5:25 ` Ni, Ray
2020-09-25 6:46 ` Laszlo Ersek
2020-09-25 14:14 ` [edk2-devel] " Zeng, Star
2021-03-25 7:58 ` Jason Lou [this message]
2021-04-01 8:41 ` Jason Lou
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