DMA per-cpu是指什么?dmesg里出现Mem-info, cpu 0 hot ...什么意思,跟硬件有关么?

steve2005

只贴了一部分,如果不够请说一下，我再贴一些。
哪位大虾指点一下这是什么原因,出现这样的提示跟硬件有关吗?


Dec  9 07:30:33 (none) user.err kernel: [66139.022966] Out of Memory: Kill process 27236 (dap_snapshot) score 193 and children.
Dec  9 07:30:33 (none) user.err kernel: [66139.022970] Out of memory: Killed process 28365 (sh).
Dec  9 07:30:33 (none) user.notice DAOS: Performing Post Processing on Client 2k, Recovery Point 20061209_0730
Dec  9 07:30:33 (none) auth.info sshd[28369]: Accepted publickey for root from 192.168.88.104 port 2447 ssh2
Dec  9 07:30:33 (none) user.notice DAEUPD: Start: Blocks to Read 27, Total Real Size: 1769472, Path: /mnt/data/2k,d0000-p0001.bkp
Dec  9 07:30:34 (none) user.notice DAOS: Attempting to Remove Recovery Point 20061209_0500 from Client fat_xp
Dec  9 07:30:35 (none) user.notice DAOS: Post Processing on Client: 2k3, Recovery Point 20061209_0730 Completed
Dec  9 07:30:36 (none) auth.info sshd[28380]: Accepted publickey for root from 192.168.88.125 port 1070 ssh2
Dec  9 07:30:36 (none) user.notice DAOS: Recovery Point 20061209_0500 from Client fat_2k Removed to Meet RP Limit
Dec  9 07:30:36 (none) user.warn kernel: [66142.785632] oom-killer: gfp_mask=0x201d2, order=0
Dec  9 07:30:36 (none) user.info kernel: Mem-info:
Dec  9 07:30:36 (none) user.warn kernel:    和别的对照看来下面应该是DMA per-cpu
Dec  9 07:30:36 (none) user.warn kernel: [66142.786412] cpu 0 hot: high 0, batch 1 used:0
Dec  9 07:30:36 (none) user.warn kernel: [66142.786478] cpu 0 cold: high 0, batch 1 used:0
Dec  9 07:30:36 (none) user.warn kernel:  empty   和别的对照看来这里应该是DMA32 per-cpu
Dec  9 07:30:36 (none) user.warn kernel:      和别的对照看来下面应该是Normal per-cpu
Dec  9 07:30:36 (none) user.warn kernel: [66142.786681] cpu 0 hot: high 186, batch 31 used:31
Dec  9 07:30:36 (none) user.warn kernel: [66142.786748] cpu 0 cold: high 62, batch 15 used:56
Dec  9 07:30:36 (none) user.warn kernel:  empty    和别的对照看来这里应该是Highmem per-cpu
Dec  9 07:30:36 (none) user.warn kernel: [66142.786884] Free pages:        5356kB (0kB HighMem)
Dec  9 07:30:36 (none) user.warn kernel: [66142.786953] Active:5169 inactive:5069 dirty:5 writeback:0 unstable:0 free:1339 slab:2459 mapped:58 pagetables:105
Dec  9 07:30:36 (none) user.warn kernel: [66142.787031] DMA free:2036kB min:88kB low:108kB high:132kB active:1352kB inactive:140kB present:16384kB pages_scanned:1579 all_unreclaimable? yes
Dec  9 07:30:36 (none) user.warn kernel:
Dec  9 07:30:36 (none) user.warn kernel: [66142.787197] DMA32 free:0kB min:0kB low:0kB high:0kB active:0kB inactive:0kB present:0kB pages_scanned:0 all_unreclaimable? no