[PATCH v2 0/6] Fast restart with many hugepages

[Bruce Richardson]

On Wed, Jan 19, 2022 at 11:09:11PM +0200, Dmitry Kozlyuk wrote:
> This patchset is a new design and implementation of [1].
> 
> v2:
>   * Fix hugepage file removal when they are no longer used.
>     Disable removal with --huge-unlink=never as intended.
>     Document this behavior difference. (Bruce)
>   * Improve documentation, commit messages, and naming. (Thomas)
> 
Thanks for the v2, I now see the promised perf improvements when running
some quick tests with testpmd. Some quick numbers below, summary version is
that for testpmd with default mempool size startup/exit time drops from
1.7s to 1.4s, and when I increase mempool size to 4M mbufs, time drops
from 7.6s to 3.9s.

/Bruce

cmd: "time echo "quit" | sudo ./build/app/dpdk-testpmd -c F --no-pci -- -i"

Baseline (no patches) - 1.7 sec
Baseline (with patches) - 1.7 sec
Huge-unlink=never - 1.4 sec

Adding --total-num-mbufs=4096000

Baseline (with patches) - 7.6 sec
Huge-unlink=never - 3.9 sec