I've been testing various kernels, the current 4.18.16.arch1-1, the current LTS 4.14.78-1, and the previous few LTS versions, and my system is still swapping heavily. I've tried 0 or 1 in /proc/sys/vm/swappiness, and it still swaps. Currently, it's using 1.36G of swap, despite only using 7.90G/31.3G of RAM.
]]>מאי 16 15:50:50 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:50:50 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:50:50 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:50:50 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:50:51 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:50:51 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:50:51 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:50:51 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:50:51 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:50:51 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:50:56 Arch-Home kernel: swiotlb_tbl_map_single: 13 callbacks suppressed
מאי 16 15:50:56 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:50:56 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:50:56 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:50:57 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:50:58 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:50:58 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:50:59 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:50:59 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:51:00 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:51:00 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:51:36 Arch-Home kernel: swiotlb_tbl_map_single: 16 callbacks suppressed
מאי 16 15:51:36 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:51:37 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:51:37 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:51:38 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:51:38 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:51:39 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:51:39 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:51:40 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:51:40 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:51:41 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:51:42 Arch-Home kernel: swiotlb_tbl_map_single: 1 callbacks suppressed
מאי 16 15:51:42 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:51:43 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:51:43 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:51:44 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:51:44 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:51:45 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:51:45 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:51:46 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:51:46 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
מאי 16 15:51:47 Arch-Home kernel: radeon 0000:01:00.0: swiotlb buffer is full (sz: 2097152 bytes)
this make think those errors seem to be somehow triggering the kernel to swap for some reason
anyone have any idea what could be causing this issue ? and maybe where to report it ?