【Android】DMA-buffer：如何查看系统dma-buffer使用情况

最新推荐文章于 2025-03-04 21:49:46 发布

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最新推荐文章于 2025-03-04 21:49:46 发布 · 927 阅读

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#android #java #linux

查看命令

cat sys/kernel/debug/dma_buf/dmaprocs

trinket:/ # cat sys/kernel/debug/dma_buf/dmaprocs

surfaceflinger (PID 723) size: 65960
DMA Buffers:
Name            Size (KB)       Time Alive (sec)
dmabuf87        1328            2570
dmabuf105       28              2570
dmabuf120       8196            2563
dmabuf109       28              2569
dmabuf101       28              2570
dmabuf89        1328            2570
dmabuf17        28              2581
dmabuf113       28              2569
dmabuf111       28              2569
dmabuf85        1328            2570
dmabuf127       28              2563
dmabuf19        28              2581
dmabuf20        8196            2581
dmabuf103       28              2570
dmabuf90        28              2570
dmabuf108       2468            2569
dmabuf119       28              2563
dmabuf102       964             2570
dmabuf123       28              2563
dmabuf21        28              2581
dmabuf121       28              2563
dmabuf88        28              2570
dmabuf104       964             2570
dmabuf125       28              2563
dmabuf18        8196            2581
dmabuf122       3408            2563
dmabuf124       3408            2563
dmabuf16        8196            2581
dmabuf100       964             2570
dmabuf126       3408            2563
dmabuf112       2468            2569
dmabuf118       8196            2563
dmabuf86        28              2570
dmabuf110       2468            2569

composer@2.3-se (PID 649) size: 57532
DMA Buffers:
Name            Size (KB)       Time Alive (sec)
dmabuf87        1328            2570
dmabuf105       28              2570
dmabuf120       8196            2563
dmabuf101       28              2570
dmabuf89        1328            2570
dmabuf17        28              2581
dmabuf111       28              2569
dmabuf85        1328            2570
dmabuf127       28              2563
dmabuf19        28              2581
dmabuf20        8196            2581
dmabuf103       28              2570
dmabuf90        28              2570
dmabuf119       28              2563
dmabuf102       964             2570
dmabuf21        28              2581
dmabuf121       28              2563
dmabuf88        28              2570
dmabuf104       964             2570
dmabuf125       28              2563
dmabuf18        8196            2581
dmabuf124       3408            2563
dmabuf16        8196            2581
dmabuf100       964