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From: Julian S. <js...@ac...> - 2003-04-20 23:54:48
|
Good. So can I have a copy of the skeleton server to try, + instructions on how to use it? J > Oddly enough, I've been experiencing the same problem. > I'm using Linux Mandrake 9.1, which appears to come with a version of glibc > 2.3.2 (but I think this was happening with older glibc's as well). > > I've written a tiny skeleton server that pre-creates a few threads > (successfully) and then enters a poll loop (from which point the threads > are not getting any cpu time at all). > > It seems that there is some pthreads/poll issue, but this may also be > related that I'm running everything on a laptop and we have already noticed > that there might be some scheduling problems because TSC register being > used is variable-rate on machines with power management active. > > Thanks, > Sefer. > > >That's very strange. V has threading problems with glibcs > 2.3.1, > >though. So I wonder if that's it. Do you have an older linux > >distro you can try it on, something like RH 7.3, or Suse 8.1 ? > >Basically anything with glibc 2.3.1 or before; 2.2.5 would be > >even better. > > > >J > > _________________________________________________________________ > Add photos to your messages with MSN 8. Get 2 months FREE*. > http://join.msn.com/?page=features/featuredemail > > > > ------------------------------------------------------- > This sf.net email is sponsored by:ThinkGeek > Welcome to geek heaven. > http://thinkgeek.com/sf > _______________________________________________ > Valgrind-users mailing list > Val...@li... > https://lists.sourceforge.net/lists/listinfo/valgrind-users |
|
From: Robert W. <rj...@du...> - 2003-04-20 21:50:38
|
Hi all, The attached patch to the CVS head tracks open file descriptors and dumps them out at the end of the run. If you don't specify any command-line options, you get a summary indicating how many fds are still open. If you specify --fd-list=yes, you get a more verbose list showing the filename (if it exists) for each open file descriptor, along with a backtrace from the point where it was opened. If the fd was inherited from the parent process, no backtrace is produced. The patch knows about file descriptors created by the following system calls: open, dup, dup2, pipe, socket, socketpair and accept. It also knows about file descriptors passed between processes using usix-domain socket cmsg's. Please let me know if I've missed any important calls. The patch also adds VG_(lseek), VG_(readlink) and VG_(getdents) to vg_mylibc, which some other people might find useful too. Regards, Robert. -- Robert Walsh Amalgamated Durables, Inc. - "We don't make the things you buy." Email: rj...@du... |
|
From: Todd R. <ric...@pr...> - 2003-04-20 07:04:29
|
My tests were on both a Gigabyte athlon XP and a Dell 2.53 p4. I was also
about to write a smaller test program, but it looks like you beat me to it -
thx
Todd
----- Original Message -----
From: "Sefer Tov" <se...@ho...>
To: <val...@li...>
Sent: Saturday, April 19, 2003 11:45 PM
Subject: [Valgrind-users] Re: valgrind / pthreads issue
> Hi!
>
> Oddly enough, I've been experiencing the same problem.
> I'm using Linux Mandrake 9.1, which appears to come with a version of
glibc
> 2.3.2 (but I think this was happening with older glibc's as well).
>
> I've written a tiny skeleton server that pre-creates a few threads
> (successfully) and then enters a poll loop (from which point the threads
are
> not getting any cpu time at all).
>
> It seems that there is some pthreads/poll issue, but this may also be
> related that I'm running everything on a laptop and we have already
noticed
> that there might be some scheduling problems because TSC register being
used
> is variable-rate on machines with power management active.
>
> Thanks,
> Sefer.
>
>
> >That's very strange. V has threading problems with glibcs > 2.3.1,
> >though. So I wonder if that's it. Do you have an older linux
> >distro you can try it on, something like RH 7.3, or Suse 8.1 ?
> >Basically anything with glibc 2.3.1 or before; 2.2.5 would be
> >even better.
>
> >J
>
> _________________________________________________________________
> Add photos to your messages with MSN 8. Get 2 months FREE*.
> http://join.msn.com/?page=features/featuredemail
>
>
>
> -------------------------------------------------------
> This sf.net email is sponsored by:ThinkGeek
> Welcome to geek heaven.
> http://thinkgeek.com/sf
> _______________________________________________
> Valgrind-users mailing list
> Val...@li...
> https://lists.sourceforge.net/lists/listinfo/valgrind-users
>
|
|
From: Sefer T. <se...@ho...> - 2003-04-20 06:45:24
|
Hi!
Oddly enough, I've been experiencing the same problem.
I'm using Linux Mandrake 9.1, which appears to come with a version of glibc
2.3.2 (but I think this was happening with older glibc's as well).
I've written a tiny skeleton server that pre-creates a few threads
(successfully) and then enters a poll loop (from which point the threads are
not getting any cpu time at all).
It seems that there is some pthreads/poll issue, but this may also be
related that I'm running everything on a laptop and we have already noticed
that there might be some scheduling problems because TSC register being used
is variable-rate on machines with power management active.
Thanks,
Sefer.
>That's very strange. V has threading problems with glibcs > 2.3.1,
>though. So I wonder if that's it. Do you have an older linux
>distro you can try it on, something like RH 7.3, or Suse 8.1 ?
>Basically anything with glibc 2.3.1 or before; 2.2.5 would be
>even better.
>J
_________________________________________________________________
Add photos to your messages with MSN 8. Get 2 months FREE*.
http://join.msn.com/?page=features/featuredemail
|