https://bugzilla.mindrot.org/show_bug.cgi?id=3655
Andreas Gustafsson <gson@araneus.fi> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |gson@araneus.fi
--- Comment #1 from Andreas Gustafsson <gson@araneus.fi> ---
I am also affected by this bug. An X11 application suddenly became
slow to the point of unusability, and it took quite a lot of detective
work to determine that the cause was neither the application itself nor
the X server but ssh.
To help quantify the worst-case slowdown, I am attaching a test program
that makes 1000 round-trip requests to the X server. Running it via
the ssh included in macOS Sonoma 14.4.1 (OpenSSH_9.6p1) shows:
$ ssh -X -oObscureKeystrokeTiming=no localhost
$ time ./test
real 0m0.120s
user 0m0.007s
sys 0m0.018s
$ exit
$ ssh -X localhost
$ time ./test
real 0m24.095s
user 0m0.018s
sys 0m0.066s
That's a slowdown by a factor of 200.
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Andreas Gustafsson <gson@araneus.fi> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |gson@araneus.fi
--- Comment #1 from Andreas Gustafsson <gson@araneus.fi> ---
I am also affected by this bug. An X11 application suddenly became
slow to the point of unusability, and it took quite a lot of detective
work to determine that the cause was neither the application itself nor
the X server but ssh.
To help quantify the worst-case slowdown, I am attaching a test program
that makes 1000 round-trip requests to the X server. Running it via
the ssh included in macOS Sonoma 14.4.1 (OpenSSH_9.6p1) shows:
$ ssh -X -oObscureKeystrokeTiming=no localhost
$ time ./test
real 0m0.120s
user 0m0.007s
sys 0m0.018s
$ exit
$ ssh -X localhost
$ time ./test
real 0m24.095s
user 0m0.018s
sys 0m0.066s
That's a slowdown by a factor of 200.
--
You are receiving this mail because:
You are watching the assignee of the bug.
_______________________________________________
openssh-bugs mailing list
openssh-bugs@mindrot.org
https://lists.mindrot.org/mailman/listinfo/openssh-bugs