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Date:      Mon, 27 Jul 2020 23:12:20 +0200
From:      Mateusz Piotrowski <0mp@FreeBSD.org>
To:        Robert Huff <roberthuff@rcn.com>, questions@freebsd.org
Subject:   Re: change in tcsh behavior
Message-ID:  <e48b4a3e-9861-71ba-1130-9e5de911e629@FreeBSD.org>
In-Reply-To: <24351.11091.522286.251422@jerusalem.litteratus.org>
References:  <24351.11091.522286.251422@jerusalem.litteratus.org>

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Hi,

On 7/27/20 9:30 PM, Robert Huff wrote:
> Hello:
> 	After upgrading to:
>
> FreeBSD 13.0-CURRENT #0 r363470: Fri Jul 24 08:44:41 EDT 2020 amd64
>
> 	tcsh behaves differently.
> 	In the old versiou, typing Ctl-t produced:
>
> load: 0.26  cmd: grep 10833 [getblk] 6.95r 0.05u 0.29s 1% 2528k
>
> 	Now I get:
>
> load: 0.26  cmd: grep 10833 [getblk] 6.95r 0.05u 0.29s 1% 2528k
> mi_switch+0x155 sleepq_switch+0x11a sleeplk+0x106 lockmgr_xlock_hard+0x3e5 __lockmgr_args+0x618 getblkx+0x13f cluster_read+0xc2 ffs_read+0x19f VOP_READ_APV+0x35 vn_read+0x1e8 vn_io_fault_doio+0x43 vn_io_fault1+0x16c vn_io_fault+0x1bb dofileread+0x81 sys_read+0xc0 amd64_syscall+0x140 fast_syscall_common+0xf8
>
> 	Nice ... but not useful.
> 	Haven't found this documented.
> 	How do I go back to the old output?

Set sysctl kern.tty_info_kstacks to 0.

See man termios for more details.

Cheers,

Mateusz




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