1# DFX Subsystem Changelog
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3## Change in the Graphic Memory Statistics Method of HiDumper Component
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5**Access Level**
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7Other
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9**Reason for Change**
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11The Graph value in the **hidumper --mem pid** command was obtained by calling the API provided by RenderService, which could not access the corresponding ION/DMA memory.
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13**Change Impact**
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15After **hidumper --mem pid** is executed to view the Pss memory of a specified process, there will be an additional Graph value.
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17**Change Since**
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19OpenHarmony SDK 4.1.6.7
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21**Key API/Component Changes**
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23Affected Component: HiDumper
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25Before the change: After **hidumper --mem pid** is executed, the memory information's graph statistics were obtained by calling the API provided by RenderService.
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27After the change: After **hidumper --mem pid** is executed, the graph statistics in the memory information is obtained by reading from the **/proc/process_dmabuf_info** node.
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29**Adaptation Guide**
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31No adaptation is needed.
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