Re: LOR web page

From: Brian Fundakowski Feldman (green_at_FreeBSD.org)
Date: 04/30/04

  • Next message: Brian Fundakowski Feldman: "Re: LOR web page" 
    To: John Baldwin <jhb@FreeBSD.org>
Date: Fri, 30 Apr 2004 17:09:17 -0400

    John Baldwin <jhb@FreeBSD.org> wrote:
    > On Friday 30 April 2004 01:42 pm, Bjoern A. Zeeb wrote:
    > > Hi,
    > >
    > > being one of the first persons who had asked for such a page some time
    > > back last year I - do not know why but sporadically - put up a web page
    > > with the last 6 LORs reported I could find (inluding the FAQ one ;-)
    > >
    > > The page is at
    > >
    > > http://sources.zabbadoz.net/freebsd/lor.html
    > >
    >
    > Just a couple of notes: the 002 (the sleeping with sigacts on stopevent) is
    > fixed. Also, the 004 one is known and is a problem but fixing it is somewhat
    > complicated.
    >
    > > and will be updated once in a while (see table footer for more info on
    > > this). You may link to it in mailing list posting etc but please do NOT
    > > put a link to it in the source code.
    > >
    > > If anyone feels that it's his job or want to integrate it
    > > into the official freebsd docs please take the data from the page,
    > > drop me a note and I will link to your site.
    > >
    > >
    > > PS: can someone please close PR kern/55175 - patch has been committed
    > > by phk in
    > > http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/fs/specfs/spec_vnops.c.diff?r
    > >1=1.220&r2=1.221 I think.
    >
    > The PR is about more than just the lock order, it is also arguably a bug that
    > the filedesc lock is held while we call the poll methods of all the various
    > file structures.

    This kind of crap is a very pervasive problem -- even more so for kqueue
    than for other polling interfaces. 

    -- 
Brian Fundakowski Feldman                           \'[ FreeBSD ]''''''''''\
  <> green@FreeBSD.org                               \  The Power to Serve! \
 Opinions expressed are my own.                       \,,,,,,,,,,,,,,,,,,,,,,\
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