Working: OpenSSH_9.2p1 Raspbian-2, OpenSSL 3.0.11 19 Sep 2023
Problem: OpenSSH_9.2p1 -2+deb12u1, OpenSSL 3.0.11 19 Sep 2023
Neither of these are Ubuntu packages.
** Changed in: openssh (Ubuntu)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/2046026
Title:
Performance problem with openssh-client
Status in openssh package in Ubuntu:
Invalid
Bug description:
I have noticed a massive loss of performance in the openssh-client package.
It has no impact on a raspberry pi 4 because it has enough CPU power, but on a
pi zeroW it took about 10 seconds until the command prompt is shown to enter
the password (or autologin) while CPU load is 100%.
It can be reproduced very simple:
On a Pi ZeroW open a terminal and connect to a ssh server.
It has worked before, but then "Raspian-2" version was replaced with
"-2+deb12u1" which has this problem.
Working: OpenSSH_9.2p1 Raspbian-2, OpenSSL 3.0.11 19 Sep 2023
Problem: OpenSSH_9.2p1 -2+deb12u1, OpenSSL 3.0.11 19 Sep 2023
As you can see, the version number is the same. But the description is
different.
It looks like something like hardware acceleration is missing. If i replace
/usr/bin/ssh with the "old" one it works perfect. Login prompt is shown in
about 2 seconds. But with the new version it took about 10 seconds until the
prompt is shown.
Please let me know if you need any further information.
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https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/2046026/+subscriptions
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