From: dE <de.techno@gmail.com>
To: dm-devel@lists.linux.dev
Subject: Decrypting only uses 2 threads.
Date: Thu, 18 Apr 2024 21:45:01 +0530 [thread overview]
Message-ID: <CADofXPAz2v0teH91QtAzNQ5jfp8bU1+8hwoZUs-0h+G7KLdZkw@mail.gmail.com> (raw)
Hi.
I'm trying to encrypt some block devices and trying to use a
cipher and mode which is multithreaded. I'm trying out
aes-ctr-essiv:sha256 to test multithreading, but have also tried
aes-xts-essiv:sha256 with the same result.
The encryption is definitely multithread (massively), but while
reading from the encrypted block device, I see that only 2 threads are
being used. As a result when the CPU is throttled (deliberately), I
see a drop in throughput while increased CPU utilization only in 2
cores.
The following commands were used to setup the encryption --
cryptsetup -y -d - -c aes-ctr-essiv:sha256 --key-size 256 create disk1 /dev/sda
Is there anything I can do to increase concurrency while decrypting?
reply other threads:[~2024-04-18 16:15 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
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