RE: [Simpleweb-Support] Simple Stability...

[Niall G. <gal...@ya...>]

Hi Gail

uname -r

Niall

--- Gail Rahn Frederick <ga...@sc...>
wrote:

> Hi Jan,
> 
> The quick answer is I'm not sure.
> 
> I'm not a Linux expert, so I paid Red Hat for a
> subscription that
> automatically updates the OS. I started with
> Enterprise Linux 3 ES. After 2
> hours of Red Hat's automatic updates, I ran Simple
> again and the CLOSE_WAIT
> problem was gone. I have been running a stable
> Simple ever since.
> 
> I believe the kernel is still 2.4.x. But if you give
> me a shell command that
> displays the kernel version, I'm happy to run it and
> provide you exact
> version.
> 
>  
> - Gail.
>  
> ----------------------
> Gail Rahn Frederick
> ga...@sc...
> 503.260.0910
>  
> Screaming Geek Software
> www.screaminggeek.com
>  
> 
> -----Original Message-----
> From: sim...@li...
>
[mailto:sim...@li...]
> On Behalf Of Jan
> Mikkelsen
> Sent: Friday, August 26, 2005 12:36 AM
> To: sim...@li...
> Subject: RE: [Simpleweb-Support] Simple Stability...
> 
> Hi Gail
> 
> Did you update to a newer version of 2.4.x or to
> 2.6.x ?
> Is there any way to check if my 2.4.x kernel has
> this bug ?
> 
> Thanks,
> Jan
> 
> -----Original Message-----
> From: sim...@li...
>
[mailto:sim...@li...]
> On Behalf Of Gail
> Rahn Frederick
> Sent: 9. august 2005 02:26
> To: sim...@li...
> Subject: [Simpleweb-Support] Simple Stability...
> 
> Hi Niall and everyone,
> 
> As you know, I have been testing Simple for the past
> few weeks, trying to
> track down a TCP error that was causing my instance
> to eventually hang all
> worker threads, even under light loads.
> 
> I previously suggested a tweak to the Socket
> configuration (setting a
> SO_LINGER timeout). 
> 
> In the end, we found spotty documentation about a
> Linux 2.4.x kernel bug
> that can cause sockets closed properly by the
> application to linger
> indefinitely in CLOSE_WAIT. Updating our Red Hat
> distribution via Red Hat
> Network (we paid for this service) resulted in the
> problem completely going
> away. 
> 
> I was more than surprised to find an OS bug to be at
> fault!
> 
> Along the way, I replaced Niall's synchronization
> and thread-pooling code
> with the new JDK 5 constructs from the new and
> wonderful package
> java.util.concurrent. I proved that Niall's software
> was correct (because we
> saw the same deadlocks with the JDK 5 constructs,
> which have already been
> proven correct). But, the migration to
> java.util.concurrent seems to make a
> faster Simple.
> 
> I'm happy to contribute back the port to
> java.util.concurrent, it simplifies
> the code...
> 
> -- Gail.
> 
> -------------
> Gail Rahn Frederick
> ga...@sc...
> 503.260.0910
> 
> 
> 
> 
>
-------------------------------------------------------
> SF.Net email is Sponsored by the Better Software
> Conference & EXPO September
> 19-22, 2005 * San Francisco, CA * Development
> Lifecycle Practices Agile &
> Plan-Driven Development * Managing Projects & Teams
> * Testing & QA Security
> * Process Improvement & Measurement *
> http://www.sqe.com/bsce5sf
> _______________________________________________
> Simpleweb-Support mailing list
> Sim...@li...
>
https://lists.sourceforge.net/lists/listinfo/simpleweb-support
> 
> 
>
-------------------------------------------------------
> SF.Net email is Sponsored by the Better Software
> Conference & EXPO September
> 19-22, 2005 * San Francisco, CA * Development
> Lifecycle Practices Agile &
> Plan-Driven Development * Managing Projects & Teams
> * Testing & QA Security
> * Process Improvement & Measurement *
> http://www.sqe.com/bsce5sf
> _______________________________________________
> Simpleweb-Support mailing list
> Sim...@li...
>
https://lists.sourceforge.net/lists/listinfo/simpleweb-support
> 
> 
> 
> 
>
-------------------------------------------------------
> SF.Net email is Sponsored by the Better Software
> Conference & EXPO
> September 19-22, 2005 * San Francisco, CA *
> Development Lifecycle Practices
> Agile & Plan-Driven Development * Managing Projects
> & Teams * Testing & QA
> Security * Process Improvement & Measurement *
> http://www.sqe.com/bsce5sf
> _______________________________________________
> Simpleweb-Support mailing list
> Sim...@li...
>
https://lists.sourceforge.net/lists/listinfo/simpleweb-support
> 


Niall Gallagher

__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com