From: Andy Lutomirski <luto@amacapital.net>
To: Lennart Poettering <lennart@poettering.net>, kbd@lists.altlinux.org
Cc: systemd Mailing List <systemd-devel@lists.freedesktop.org>
Subject: Re: [kbd] [systemd-devel] systemd-vconsole-setup fails very slowly
Date: Wed, 1 Apr 2015 11:56:50 -0700
Message-ID: <CALCETrU_rpAK2N13qobcpkB_9X406-i6ccgfSYAOv6gWLVXmWg@mail.gmail.com> (raw)
In-Reply-To: <CALCETrXw3THgwcGUJxp8UFAAFshSDxvD22jWoBQs9gmRkJkp_Q@mail.gmail.com>
On Thu, Jan 22, 2015 at 6:29 PM, Andy Lutomirski <luto@amacapital.net> wrote:
> On Thu, Jan 22, 2015 at 6:13 PM, Lennart Poettering
> <lennart@poettering.net> wrote:
>> On Wed, 21.01.15 19:15, Andy Lutomirski (luto@amacapital.net) wrote:
>>
>>> Hi all-
>>>
>>> When running virtme (a simple vm gadget) on Fedora 21, the slowest
>>> part of bootup by far appears to be systemd-vconsole-setup:
>>>
>>> # time /usr/lib/systemd/systemd-vconsole-setup
>>> putfont: PIO_FONT trying ...
>>> ...................
>>> setfont: putfont: 512,8x16: failed: -1
>>> putfont: PIO_FONT: Invalid argument
>>> /usr/bin/setfont failed with error code 71.
>>
>> setfont is not part of systemd, we just invoke it. If that fails, this
>> is a problem somewhere between the VM, the kernel and console-tools.
>>
>
> Aha -- I missed that systemd-vconsole-setup calls setfont. I can
> trigger the same problem by just typing setfont. For whatever reason,
> my other Fedora 21 computer only has this problem if I type setfont
> and not if I run systemd-vconcole-setup.
>
>> My uneducated guess is that your virtual machine boots up with a
>> non-graphical console, and the tool thus tries to upload the fonts
>> into the good old VGA hw text mode glyph tables, and qemu is very slow
>> at that... Or something like that.
>
> setfont is doing this:
>
> nanosleep({0, 250000000}, NULL) = 0
> ioctl(3, PIO_FONT, 0xfbc010) = -1 EINVAL (Invalid argument)
> write(2, ".", 1.) = 1
> nanosleep({0, 250000000}, NULL) = 0
> ioctl(3, PIO_FONT, 0xfbc010) = -1 EINVAL (Invalid argument)
> write(2, ".", 1.) = 1
> nanosleep({0, 250000000}, NULL) = 0
> ioctl(3, PIO_FONT, 0xfbc010) = -1 EINVAL (Invalid argument)
> write(2, ".", 1.) = 1
> nanosleep({0, 250000000}, NULL) = 0
> ioctl(3, PIO_FONT, 0xfbc010) = -1 EINVAL (Invalid argument)
> write(2, ".", 1.) = 1
> nanosleep({0, 250000000}, NULL) = 0
> ioctl(3, PIO_FONT, 0xfbc010) = -1 EINVAL (Invalid argument)
> write(2, ".", 1.) = 1
>
> This thing has only a serial console:
>
> # cat /proc/consoles
> ttyS0 -W- (EC a) 4:64
>
> setfont does this:
>
> /* we allow ourselves to hang here for ca 5 seconds, xdm may
> be playing tricks on us. */
> while ((loop++ < 20) && (i = ioctl(fd, PIO_FONT, buf)))
> {
> if (loop <= 1)
> fprintf(stderr, "putfont: PIO_FONT trying ...\n");
> else
> fprintf(stderr, ".");
> usleep(250000);
> }
> fprintf(stderr, "\n");
>
> Alexey, would it make sense to remove this loop or to add a way to turn it off?
Ping, everyone?
This issue still exists. AFAICT systemd is relying on a really old
tool, that that really old tool (setfont) is sometimes delaying boot
by a very large amount. Can we either fix the tool (Alexey) or stop
using it (systemd people)?
--Andy
next prev parent reply other threads:[~2015-04-01 18:56 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-23 2:29 ` Andy Lutomirski
2015-01-26 10:39 ` Alexey Gladkov
2015-04-01 18:56 ` Andy Lutomirski [this message]
2015-04-01 19:32 ` Kay Sievers
2015-04-01 19:36 ` Andy Lutomirski
2015-04-01 19:55 ` Kay Sievers
2015-04-01 20:45 ` Andy Lutomirski
2015-04-01 20:53 ` Kay Sievers
2015-04-01 21:19 ` Andy Lutomirski
2015-04-01 21:36 ` Kay Sievers
2015-04-01 21:38 ` Andy Lutomirski
2015-04-01 21:47 ` Kay Sievers
2015-04-01 22:00 ` Andy Lutomirski
2015-04-01 22:28 ` Kay Sievers
2015-04-01 21:20 ` Alexey Gladkov
2015-04-06 21:48 ` Alexey Gladkov
2015-04-06 22:55 ` Andy Lutomirski
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