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Use io_uring (blocked on missing copy_file_range op and liburing offload escape) #4

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SUPERCILEX opened this issue Jan 6, 2023 · 3 comments
Open

Use io_uring (blocked on missing copy_file_range op and liburing offload escape) #4

SUPERCILEX opened this issue Jan 6, 2023 · 3 comments

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@SUPERCILEX
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If io_uring ever adds support for copy_file_range (splice doesn't do copy acceleration AFAIK), we should be able to use that to parallelize our writes.
@SUPERCILEX SUPERCILEX changed the title Investigate copying using io_uring Investigate using io_uring Jan 11, 2023
@SUPERCILEX
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SUPERCILEX commented Jan 11, 2023 •
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unlinkat is supported by io_uring, so we should be able to queue a getdents buffer size worth of file unlinks. Whether or not that faster, I'm not sure.

The uring command queue can be bound to a thread local.

@SUPERCILEX
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Very wip implementation for rmz: https://github.com/SUPERCILEX/fuc/tree/io_uring_rmz

@SUPERCILEX SUPERCILEX changed the title Investigate using io_uring Use io_uring for copying (blocked on missing copy_file_range op) Jan 29, 2023
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axboe/liburing#830

@SUPERCILEX SUPERCILEX changed the title Use io_uring for copying (blocked on missing copy_file_range op) Use io_uring (blocked on missing copy_file_range op and https://github.com/axboe/liburing/issues/830) May 25, 2023
@SUPERCILEX SUPERCILEX changed the title Use io_uring (blocked on missing copy_file_range op and https://github.com/axboe/liburing/issues/830) Use io_uring (blocked on missing copy_file_range op and liburing offload escape) May 25, 2023
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