Date: Wed, 2 Aug 2006 18:02:47 -0400 (EDT) From: Daniel Eischen <deischen@freebsd.org> To: Kip Macy <kmacy@fsmware.com> Cc: freebsd-current@freebsd.org, John Birrell <jb@what-creek.com>, Tobias Gro?er <bsdlists@gmx.de> Subject: Re: DTRACE build failure (/usr/obj/usr/src/tmp/usr/bin/ld: cannot find -lpthread) Message-ID: <Pine.GSO.4.64.0608021800440.8714@sea.ntplx.net> In-Reply-To: <20060802141115.D71770@demos.bsdclusters.com> References: <1154527524.93666.22.camel@tobias.home.web-wahnsinn.de> <20060802194817.GA53062@what-creek.com> <Pine.GSO.4.64.0608021611310.8714@sea.ntplx.net> <20060802135246.J66851@demos.bsdclusters.com> <Pine.GSO.4.64.0608021706040.8714@sea.ntplx.net> <20060802141115.D71770@demos.bsdclusters.com>
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On Wed, 2 Aug 2006, Kip Macy wrote: > I described it previously. Signals won't always be sent to the right > process, i.e. running a process under GDB the debuggee will sometimes > get the SIGTRAP instead of GDB. When restarting mysql, mysql-server > becomes unkillable. Removing KSE (bike_sched et al.) makes the problem > go away. That sounds more like a bug with gdb/libthread_db. It also doesn't sound like a major bug either, like "signals are broken with KSE" makes it sound. > It is trivial to hit on sun4v. However, I've seen it (or a problem with > similar symptoms) on x86 using NetApp's development simulator which > makes very heavy use of signals. I believe NetApp ended up giving up on > using FreeBSD for running their simulator as this problem made FreeBSD a > non-starter for them. I no longer work for NetApp so I don't have access > to the sources for the simulator any more, so I don't know if bike_sched > fixes that problem for them or not. > > -Kip > > > On Wed, 2 Aug 2006, Daniel Eischen wrote: > >> On Wed, 2 Aug 2006, Kip Macy wrote: >> >>> sun4u is a dead architecture. Signals are broken with KSE on a >>> tightly coupled SMP so sun4v doesn't even have KSE in the tree. >> >> On every platform or on sparc64? I am unaware of any signal >> problems in i386. >> >>> Unless someone steps up to fix KSE "will not work" is more correct. >> >> Please clarify. >> >> -- >> DE >> _______________________________________________ -- DE
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