"BGL", Giant and kernel lockups

2005-10-01 Thread Greg 'groggy' Lehey
gt; Then I come across this article in a comparison between Linux and >> FreeBSD saying that FreeBSD has kernel locking >> issues. Specifically, a problem nicknamed BGL or Big Giant Lock. It >> seems that it affects SMP systems under high load. > > Sounds like a pretty simpli

Re: BGL

2005-10-01 Thread Kris Kennaway
On Sat, Oct 01, 2005 at 02:36:18PM +0100, Robert Slade wrote: > I did post several mails to the list and did not get any replies. That often indicates something was wrong with your emails, e.g. you didn't give enough information, and no-one was motivated to dig it out of you. > The machine is ba

RE: BGL

2005-10-01 Thread Robert Slade
On Sat, 2005-10-01 at 15:01, Tamouh H. wrote: > Hi Rob, > > For anyone here to be able to help you with this, we need much more > information. > > For example: > > Make/Model of the machine: > Type of CPUs, Speed: > Type of RAM/Size: > Type of Controller Card: > Type of Hard Drives: > Network Ca

RE: BGL

2005-10-01 Thread Tamouh H.
Hi Rob, For anyone here to be able to help you with this, we need much more information. For example: Make/Model of the machine: Type of CPUs, Speed: Type of RAM/Size: Type of Controller Card: Type of Hard Drives: Network Card: Applications running: or post a full dmesg.boot If you have compi

Re: BGL

2005-10-01 Thread Robert Slade
On Sat, 2005-10-01 at 09:27, Kris Kennaway wrote: > On Sat, Oct 01, 2005 at 07:43:51AM +0100, Robert Slade wrote: > > > Ansar, > > > > I have had a mail server running a SMP kernel with Fedora Core 2 I have > > not seen any Kernel Lockup or random reboots. > > > > I am been having problems with

Re: BGL

2005-10-01 Thread Kris Kennaway
On Sat, Oct 01, 2005 at 07:43:51AM +0100, Robert Slade wrote: > Ansar, > > I have had a mail server running a SMP kernel with Fedora Core 2 I have > not seen any Kernel Lockup or random reboots. > > I am been having problems with a Quad processor machine with both 5.4 > and 6 beta so much so tha

Re: BGL

2005-10-01 Thread Kris Kennaway
ng that FreeBSD has kernel locking issues. Specifically, a problem > nicknamed BGL or Big Giant Lock. It seems that it affects SMP systems under > high load. Sounds like a pretty simplistic summary, but as I mentioned it's out of date anyway. > How much do other OSes suffer from this

Re: BGL

2005-10-01 Thread Erik Trulsson
ng that FreeBSD has kernel locking issues. Specifically, a problem > nicknamed BGL or Big Giant Lock. It seems that it affects SMP systems under > high load. That is not really a "problem", but just a design decision that can lead to bad efficiency in a few situations. In FreeBSD

RE: BGL

2005-10-01 Thread Robert Slade
eBSD has kernel locking issues. Specifically, a problem > nicknamed BGL or Big Giant Lock. It seems that it affects SMP systems under > high load. > > How much do other OSes suffer from this? > > > > -Original Message- > > From: Kris Kennaway [mailto:[EMAIL PR

RE: BGL

2005-09-30 Thread Ansar Mohammed
I love FreeBSD. I have been using it since 2.x. I have never had any problems with it. Rock Solid. Never a single kernel panic. Then I come across this article in a comparison between Linux and FreeBSD saying that FreeBSD has kernel locking issues. Specifically, a problem nicknamed BGL or Big

Re: BGL

2005-09-30 Thread Kris Kennaway
On Thu, Sep 29, 2005 at 10:09:17PM -0400, Ansar Mohammed wrote: > Is the kernel locking issue with FreeBSD 4.x sorted out in 5.x? I can't seem > to get a proper answer. Perhaps because the above isn't a proper question? Yes, the BGL was pushed down a lot in FreeBSD 5. It still c

BGL

2005-09-30 Thread Ansar Mohammed
Is the kernel locking issue with FreeBSD 4.x sorted out in 5.x? I can't seem to get a proper answer. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROT