1535649a03
ANBZ: #18841 We applied parallel deferred memory online to virtio-mem and observed a significant speedup in the hot-plug process. We conducted an experiment to hotplug 400G of memory, and the results were as follows: - Before applying the patch: - Total Time = Origin Hotplug Time = 5537ms (72.24 GB/s) - After applying the patch (with `parallel_hotplug_ratio=80`): - Origin Hotplug Time = 178ms - Deferred Parallel Hotplug Time = 1200ms - Total Time = 1378ms (76% reduction, 290.28 GB/s) Lastly, there's an issue regarding the guest's plug request to the VMM. The VMM relies on the plug requests sent by the guest to determine the size of the hot-plugged memory. Therefore, we should defer the sending of the plug requests after the memory has been actually onlined. Signed-off-by: Yang Rong <youngrong@linux.alibaba.com> Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com> Link: https://gitee.com/anolis/cloud-kernel/pulls/4622 |
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| .. | ||
| Kconfig | ||
| Makefile | ||
| virtio.c | ||
| virtio_balloon.c | ||
| virtio_dma_buf.c | ||
| virtio_input.c | ||
| virtio_mem.c | ||
| virtio_mmio.c | ||
| virtio_pci_common.c | ||
| virtio_pci_common.h | ||
| virtio_pci_legacy.c | ||
| virtio_pci_modern.c | ||
| virtio_ring.c | ||
| virtio_vdpa.c | ||