Date: Wed, 22 Mar 2006 16:11:07 +0800 From: David Xu <davidxu@freebsd.org> To: freebsd-stable@freebsd.org Subject: Re: Process hanging on 6.0-STABLE Message-ID: <200603221611.07805.davidxu@freebsd.org> In-Reply-To: <200603221755.25666.doconnor@gsoft.com.au> References: <200603221755.25666.doconnor@gsoft.com.au>
next in thread | previous in thread | raw e-mail | index | archive | help
=D4=DA Wednesday 22 March 2006 15:25=A3=ACDaniel O'Connor =D0=B4=B5=C0=A3=BA > Hi, > I work for a small company that makes radar systems for research=20 > organisations and we use FreeBSD on the PCs for data acquisition and=20 > processing. We have recently shifted to FreeBSD6/amd64 and one machine in= =20 > particular is exhibiting a strange problem. >=20 > The acquisition process is a Tcl interpreter with a largish chunk of C co= de > which talks to the hardware (via RS485 and a custom PCI card). Once the= =20 > system is set up it streams data back via the PCI card and runs it through > various data processors (eg dump raw data to disk, FFT, winds, etc..).=20 >=20 > The actual forking of processes is handled in Tcl and the C code only gets > involved to write the data out (to an FD the Tcl layer keeps). >=20 > The problem is that every now and then the process gets stuck and becomes > unkillable just after forking, ie.. Are you using pthreads ? David Xu
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200603221611.07805.davidxu>