From: "Yao, Jiewen" <jiewen.yao@intel.com>
To: Rafael Machado <rafaelrodrigues.machado@gmail.com>,
"edk2-devel@lists.01.org" <edk2-devel@lists.01.org>
Subject: Re: Question about memory map entries
Date: Fri, 29 Jun 2018 19:27:30 +0000 [thread overview]
Message-ID: <74D8A39837DF1E4DA445A8C0B3885C503AC75235@shsmsx102.ccr.corp.intel.com> (raw)
In-Reply-To: <CACgnt78d_-yC0eTE6J-4u8vCkaTo5NYtS23Q-afLh7GBkKMNuQ@mail.gmail.com>
Shell itself may allocate internal buffer to save something, such as history.
Thank you
Yao Jiewen
> -----Original Message-----
> From: edk2-devel [mailto:edk2-devel-bounces@lists.01.org] On Behalf Of Rafael
> Machado
> Sent: Friday, June 29, 2018 12:06 PM
> To: edk2-devel@lists.01.org
> Subject: [edk2] Question about memory map entries
>
> Hi everyone
>
> I have a question related to the memory map entries.
> Doing some tests, we noticed that if I have an application that has a lot
> of allocatepool() and freepool() calls, when this app is closed the amount
> of entries returned by the memmap shell commands increases a lot.
>
> Just for reference. This is the mapping before executing the application:
>
> Type Start End # Pages
> Attributes
> BS_Code 0000000000000000-0000000000000FFF 0000000000000001
> 000000000000000F
> BS_Data 0000000000001000-0000000000001FFF 0000000000000001
> 000000000000000F
> BS_Code 0000000000002000-000000000000BFFF 000000000000000A
> 000000000000000F
> Available 000000000000C000-0000000000057FFF 000000000000004C
> 000000000000000F
> Reserved 0000000000058000-0000000000058FFF 0000000000000001
> 000000000000000F
> Available 0000000000059000-0000000000069FFF 0000000000000011
> 000000000000000F
> BS_Data 000000000006A000-000000000006AFFF 0000000000000001
> 000000000000000F
> BS_Code 000000000006B000-000000000008BFFF 0000000000000021
> 000000000000000F
> Reserved 000000000008C000-000000000009FFFF 0000000000000014
> 000000000000000F
> BS_Code 0000000000100000-000000000010FFFF 0000000000000010
> 000000000000000F
> Available 0000000000110000-000000004D684FFF 000000000004D575
> 000000000000000F
> BS_Data 000000004D685000-000000004D6A4FFF 0000000000000020
> 000000000000000F
> Available 000000004D6A5000-000000004E34EFFF 0000000000000CAA
> 000000000000000F
> LoaderCode 000000004E34F000-000000004E42CFFF 00000000000000DE
> 000000000000000F
> BS_Data 000000004E42D000-0000000050510FFF 00000000000020E4
> 000000000000000F
> ACPI_NVS 0000000050511000-0000000050511FFF 0000000000000001
> 000000000000000F
> RT_Data 0000000050512000-0000000050512FFF 0000000000000001
> 800000000000000F
> BS_Data 0000000050513000-0000000050673FFF 0000000000000161
> 000000000000000F
> BS_Code 0000000050674000-0000000050674FFF 0000000000000001
> 000000000000000F
> Available 0000000050675000-0000000052B6EFFF 00000000000024FA
> 000000000000000F
> BS_Data 0000000052B6F000-0000000053572FFF 0000000000000A04
> 000000000000000F
> Available 0000000053573000-0000000053834FFF 00000000000002C2
> 000000000000000F
> BS_Data 0000000053835000-0000000053A0DFFF 00000000000001D9
> 000000000000000F
> Available 0000000053A0E000-0000000053A64FFF 0000000000000057
> 000000000000000F
> BS_Data 0000000053A65000-0000000054778FFF 0000000000000D14
> 000000000000000F
> Available 0000000054779000-0000000054785FFF 000000000000000D
> 000000000000000F
> BS_Data 0000000054786000-00000000547CAFFF 0000000000000045
> 000000000000000F
> Available 00000000547CB000-00000000547D3FFF 0000000000000009
> 000000000000000F
> BS_Data 00000000547D4000-000000005481DFFF 000000000000004A
> 000000000000000F
> Available 000000005481E000-000000005481FFFF 0000000000000002
> 000000000000000F
> BS_Data 0000000054820000-0000000056683FFF 0000000000001E64
> 000000000000000F
> Available 0000000056684000-00000000590C2FFF 0000000000002A3F
> 000000000000000F
> BS_Code 00000000590C3000-0000000059E83FFF 0000000000000DC1
> 000000000000000F
> RT_Code 0000000059E84000-0000000059F4BFFF 00000000000000C8
> 800000000000000F
> RT_Data 0000000059F4C000-000000005B164FFF 0000000000001219
> 800000000000000F
> Reserved 000000005B165000-000000005B566FFF 0000000000000402
> 000000000000000F
> ACPI_NVS 000000005B567000-000000005B599FFF 0000000000000033
> 000000000000000F
> ACPI_Recl 000000005B59A000-000000005B5FEFFF 0000000000000065
> 000000000000000F
> BS_Data 000000005B5FF000-000000005B5FFFFF 0000000000000001
> 000000000000000F
> Available 0000000100000000-000000029E7FFFFF 000000000019E800
> 000000000000000F
> Reserved 00000000000A0000-00000000000FFFFF 0000000000000060
> 0000000000000000
> Reserved 000000005B600000-000000005F7FFFFF 0000000000004200
> 0000000000000000
> MMIO 00000000F0000000-00000000F7FFFFFF 0000000000008000
> 8000000000000001
> MMIO 00000000FE010000-00000000FE010FFF 0000000000000001
> 8000000000000001
>
> Reserved : 18,039 Pages (73,887,744 Bytes)
> LoaderCode: 222 Pages (909,312 Bytes)
> LoaderData: 0 Pages (0 Bytes)
> BS_Code : 3,582 Pages (14,671,872 Bytes)
> BS_Data : 23,116 Pages (94,683,136 Bytes)
> RT_Code : 200 Pages (819,200 Bytes)
> RT_Data : 4,634 Pages (18,980,864 Bytes)
> ACPI_Recl : 101 Pages (413,696 Bytes)
> ACPI_NVS : 52 Pages (212,992 Bytes)
> MMIO : 32,769 Pages (134,221,824 Bytes)
> MMIO_Port : 0 Pages (0 Bytes)
> PalCode : 0 Pages (0 Bytes)
> Available : 2,039,014 Pages (8,351,801,344 Bytes)
> --------------
> Total Memory: 8,089 MB (8,482,492,416 Bytes)
>
>
>
> And this is the mapping after executing the application.
>
>
> Type Start End # Pages
> Attributes
> BS_Code 0000000000000000-0000000000000FFF 0000000000000001
> 000000000000000F
> BS_Data 0000000000001000-0000000000001FFF 0000000000000001
> 000000000000000F
> BS_Code 0000000000002000-000000000000BFFF 000000000000000A
> 000000000000000F
> Available 000000000000C000-0000000000057FFF 000000000000004C
> 000000000000000F
> Reserved 0000000000058000-0000000000058FFF 0000000000000001
> 000000000000000F
> Available 0000000000059000-0000000000069FFF 0000000000000011
> 000000000000000F
> BS_Data 000000000006A000-000000000006AFFF 0000000000000001
> 000000000000000F
> BS_Code 000000000006B000-000000000008BFFF 0000000000000021
> 000000000000000F
> Reserved 000000000008C000-000000000009FFFF 0000000000000014
> 000000000000000F
> BS_Code 0000000000100000-000000000010FFFF 0000000000000010
> 000000000000000F
> Available 0000000000110000-000000004D684FFF 000000000004D575
> 000000000000000F
> BS_Data 000000004D685000-000000004D6A4FFF 0000000000000020
> 000000000000000F
> Available 000000004D6A5000-000000004E34EFFF 0000000000000CAA
> 000000000000000F
> LoaderCode 000000004E34F000-000000004E42CFFF 00000000000000DE
> 000000000000000F
> BS_Data 000000004E42D000-0000000050510FFF 00000000000020E4
> 000000000000000F
> ACPI_NVS 0000000050511000-0000000050511FFF 0000000000000001
> 000000000000000F
> RT_Data 0000000050512000-0000000050512FFF 0000000000000001
> 800000000000000F
> BS_Data 0000000050513000-0000000050673FFF 0000000000000161
> 000000000000000F
> BS_Code 0000000050674000-0000000050674FFF 0000000000000001
> 000000000000000F
> Available 0000000050675000-0000000052384FFF 0000000000001D10
> 000000000000000F
> BS_Data 0000000052385000-0000000053572FFF 00000000000011EE
> 000000000000000F
> Available 0000000053573000-00000000535D7FFF 0000000000000065
> 000000000000000F
> BS_Data 00000000535D8000-000000005363EFFF 0000000000000067
> 000000000000000F
> Available 000000005363F000-0000000053834FFF 00000000000001F6
> 000000000000000F
> BS_Data 0000000053835000-0000000053A0DFFF 00000000000001D9
> 000000000000000F
> Available 0000000053A0E000-0000000053A64FFF 0000000000000057
> 000000000000000F
> BS_Data 0000000053A65000-0000000053F8EFFF 000000000000052A
> 000000000000000F
> Available 0000000053F8F000-0000000053F9AFFF 000000000000000C
> 000000000000000F
> BS_Data 0000000053F9B000-0000000053F9CFFF 0000000000000002
> 000000000000000F
> Available 0000000053F9D000-0000000053FA5FFF 0000000000000009
> 000000000000000F
> BS_Data 0000000053FA6000-0000000053FAAFFF 0000000000000005
> 000000000000000F
> Available 0000000053FAB000-000000005438CFFF 00000000000003E2
> 000000000000000F
> BS_Data 000000005438D000-00000000543A5FFF 0000000000000019
> 000000000000000F
> Available 00000000543A6000-0000000054416FFF 0000000000000071
> 000000000000000F
> BS_Data 0000000054417000-0000000054417FFF 0000000000000001
> 000000000000000F
> Available 0000000054418000-0000000054425FFF 000000000000000E
> 000000000000000F
> BS_Data 0000000054426000-0000000054427FFF 0000000000000002
> 000000000000000F
> Available 0000000054428000-0000000054439FFF 0000000000000012
> 000000000000000F
> BS_Data 000000005443A000-000000005443FFFF 0000000000000006
> 000000000000000F
> Available 0000000054440000-000000005444FFFF 0000000000000010
> 000000000000000F
> BS_Data 0000000054450000-0000000054454FFF 0000000000000005
> 000000000000000F
> Available 0000000054455000-0000000054458FFF 0000000000000004
> 000000000000000F
> BS_Data 0000000054459000-000000005445BFFF 0000000000000003
> 000000000000000F
> Available 000000005445C000-0000000054467FFF 000000000000000C
> 000000000000000F
> BS_Data 0000000054468000-000000005446BFFF 0000000000000004
> 000000000000000F
> Available 000000005446C000-000000005446FFFF 0000000000000004
> 000000000000000F
> BS_Data 0000000054470000-0000000054470FFF 0000000000000001
> 000000000000000F
> Available 0000000054471000-0000000054471FFF 0000000000000001
> 000000000000000F
> BS_Data 0000000054472000-0000000054474FFF 0000000000000003
> 000000000000000F
> Available 0000000054475000-0000000054490FFF 000000000000001C
> 000000000000000F
> BS_Data 0000000054491000-0000000054494FFF 0000000000000004
> 000000000000000F
> Available 0000000054495000-00000000544ABFFF 0000000000000017
> 000000000000000F
> BS_Data 00000000544AC000-00000000544ACFFF 0000000000000001
> 000000000000000F
> Available 00000000544AD000-00000000544CCFFF 0000000000000020
> 000000000000000F
> BS_Data 00000000544CD000-00000000544CFFFF 0000000000000003
> 000000000000000F
> Available 00000000544D0000-00000000544E1FFF 0000000000000012
> 000000000000000F
> BS_Data 00000000544E2000-000000005450CFFF 000000000000002B
> 000000000000000F
> Available 000000005450D000-000000005451DFFF 0000000000000011
> 000000000000000F
> BS_Data 000000005451E000-000000005451EFFF 0000000000000001
> 000000000000000F
> Available 000000005451F000-0000000054535FFF 0000000000000017
> 000000000000000F
> BS_Data 0000000054536000-0000000054536FFF 0000000000000001
> 000000000000000F
> Available 0000000054537000-000000005453EFFF 0000000000000008
> 000000000000000F
> BS_Data 000000005453F000-0000000054543FFF 0000000000000005
> 000000000000000F
> Available 0000000054544000-0000000054579FFF 0000000000000036
> 000000000000000F
> BS_Data 000000005457A000-0000000054585FFF 000000000000000C
> 000000000000000F
> Available 0000000054586000-0000000054589FFF 0000000000000004
> 000000000000000F
> BS_Data 000000005458A000-000000005458CFFF 0000000000000003
> 000000000000000F
> Available 000000005458D000-000000005459DFFF 0000000000000011
> 000000000000000F
> BS_Data 000000005459E000-000000005459EFFF 0000000000000001
> 000000000000000F
> Available 000000005459F000-00000000545A1FFF 0000000000000003
> 000000000000000F
> BS_Data 00000000545A2000-00000000545A2FFF 0000000000000001
> 000000000000000F
> Available 00000000545A3000-00000000545A7FFF 0000000000000005
> 000000000000000F
> BS_Data 00000000545A8000-00000000545A9FFF 0000000000000002
> 000000000000000F
> Available 00000000545AA000-0000000054756FFF 00000000000001AD
> 000000000000000F
> BS_Data 0000000054757000-000000005477EFFF 0000000000000028
> 000000000000000F
> Available 000000005477F000-0000000054780FFF 0000000000000002
> 000000000000000F
> BS_Data 0000000054781000-0000000054785FFF 0000000000000005
> 000000000000000F
> Available 0000000054786000-0000000054789FFF 0000000000000004
> 000000000000000F
> BS_Data 000000005478A000-00000000547CBFFF 0000000000000042
> 000000000000000F
> Available 00000000547CC000-00000000547CEFFF 0000000000000003
> 000000000000000F
> BS_Data 00000000547CF000-00000000547D3FFF 0000000000000005
> 000000000000000F
> Available 00000000547D4000-00000000547E7FFF 0000000000000014
> 000000000000000F
> BS_Data 00000000547E8000-00000000547F4FFF 000000000000000D
> 000000000000000F
> Available 00000000547F5000-00000000547FBFFF 0000000000000007
> 000000000000000F
> BS_Data 00000000547FC000-000000005481EFFF 0000000000000023
> 000000000000000F
> Available 000000005481F000-000000005481FFFF 0000000000000001
> 000000000000000F
> BS_Data 0000000054820000-0000000054828FFF 0000000000000009
> 000000000000000F
> Available 0000000054829000-0000000054829FFF 0000000000000001
> 000000000000000F
> BS_Data 000000005482A000-0000000054CFAFFF 00000000000004D1
> 000000000000000F
> Available 0000000054CFB000-0000000054CFCFFF 0000000000000002
> 000000000000000F
> BS_Data 0000000054CFD000-0000000055269FFF 000000000000056D
> 000000000000000F
> Available 000000005526A000-000000005526EFFF 0000000000000005
> 000000000000000F
> BS_Data 000000005526F000-0000000056683FFF 0000000000001415
> 000000000000000F
> Available 0000000056684000-00000000590C2FFF 0000000000002A3F
> 000000000000000F
> BS_Code 00000000590C3000-0000000059E83FFF 0000000000000DC1
> 000000000000000F
> RT_Code 0000000059E84000-0000000059F4BFFF 00000000000000C8
> 800000000000000F
> RT_Data 0000000059F4C000-000000005B164FFF 0000000000001219
> 800000000000000F
> Reserved 000000005B165000-000000005B566FFF 0000000000000402
> 000000000000000F
> ACPI_NVS 000000005B567000-000000005B599FFF 0000000000000033
> 000000000000000F
> ACPI_Recl 000000005B59A000-000000005B5FEFFF 0000000000000065
> 000000000000000F
> BS_Data 000000005B5FF000-000000005B5FFFFF 0000000000000001
> 000000000000000F
> Available 0000000100000000-000000029E7FFFFF 000000000019E800
> 000000000000000F
> Reserved 00000000000A0000-00000000000FFFFF 0000000000000060
> 0000000000000000
> Reserved 000000005B600000-000000005F7FFFFF 0000000000004200
> 0000000000000000
> MMIO 00000000F0000000-00000000F7FFFFFF 0000000000008000
> 8000000000000001
> MMIO 00000000FE010000-00000000FE010FFF 0000000000000001
> 8000000000000001
>
> Reserved : 18,039 Pages (73,887,744 Bytes)
> LoaderCode: 222 Pages (909,312 Bytes)
> LoaderData: 0 Pages (0 Bytes)
> BS_Code : 3,582 Pages (14,671,872 Bytes)
> BS_Data : 23,366 Pages (95,707,136 Bytes)
> RT_Code : 200 Pages (819,200 Bytes)
> RT_Data : 4,634 Pages (18,980,864 Bytes)
> ACPI_Recl : 101 Pages (413,696 Bytes)
> ACPI_NVS : 52 Pages (212,992 Bytes)
> MMIO : 32,769 Pages (134,221,824 Bytes)
> MMIO_Port : 0 Pages (0 Bytes)
> PalCode : 0 Pages (0 Bytes)
> Available : 2,038,764 Pages (8,350,777,344 Bytes)
> --------------
> Total Memory: 8,089 MB (8,482,492,416 Bytes)
>
>
> I would like to understand better what causes these entries to be created.
> We already checked and there is no memory leak at the code.
> What causes these entries to be created?
> Can this increase on the memory map entries represent a risk of hanging the
> system at the subsequent boot?
>
> Thanks and Regards
> Rafael R. Machado
> _______________________________________________
> edk2-devel mailing list
> edk2-devel@lists.01.org
> https://lists.01.org/mailman/listinfo/edk2-devel
next prev parent reply other threads:[~2018-06-29 19:27 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-29 19:05 Question about memory map entries Rafael Machado
2018-06-29 19:27 ` Yao, Jiewen [this message]
2018-06-30 1:31 ` Ni, Ruiyu
2018-06-30 12:02 ` Rafael Machado
2018-06-30 19:23 ` Andrew Fish
2018-08-02 12:39 ` Rafael Machado
2018-08-02 14:37 ` Andrew Fish
2018-08-02 14:44 ` Laszlo Ersek
2018-08-02 16:42 ` Rafael Machado
2018-08-02 17:48 ` Laszlo Ersek
2018-08-02 19:02 ` Rafael Machado
2018-08-02 19:18 ` Rafael Machado
2018-08-02 20:38 ` Laszlo Ersek
2018-08-07 19:12 ` Rafael Machado
2018-08-07 22:42 ` Yao, Jiewen
2018-08-08 11:55 ` Rafael Machado
2018-08-08 17:31 ` Rafael Machado
2018-08-08 19:13 ` Andrew Fish
2018-08-08 19:43 ` Rafael Machado
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