2021-03-27 17:38:59
Наконец-то я дождался real-shit от eBPF, а то все вот эти фильтры пакетиков это круто, но слишком однообразно. До сейчас.
BPF for storage: an exokernel-inspired approach
We explore using BPF to reduce this overhead, by injecting user-de ned functions deep in the kernel’s I/O
processing stack. When issuing a series of dependent I/O
requests, this approach can increase IOPS by over 2.5×
and cut latency by half, by bypassing kernel layers and
avoiding user-kernel boundary crossings
Слова из твитора:
Their example use case of performing application-level B-tree lookups (e.g. database indexes) within the kernel make a lot of sense.
https://arxiv.org/pdf/2102.12922.pdf
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