Shell itself may allocate internal buffer to save something, such as history.
Thank you Yao Jiewen > -----Original Message----- > From: edk2-devel [mailto:[email protected]] On Behalf Of Rafael > Machado > Sent: Friday, June 29, 2018 12:06 PM > To: [email protected] > 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 > [email protected] > https://lists.01.org/mailman/listinfo/edk2-devel _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
