kswapd running at 100% - Slowing down Machine

[Esquivel, Vicente]

Actually the recommended fix is :

A work arond is to tune your system by passing a new value to the vm variable inactive_clean_percent it is currently set at 30 increasing it to 100 has been know to do the trick.to do this type the following command:

# echo 100 > /proc/sys/vm/inactive_clean_percent

To set this up so it is always set add the following line to the file /etc/sysctl.conf:

vm.inactive_clean_percent =100


Vince

> -----Original Message-----
> From: redhat-list-bounces at redhat.com 
> [mailto:redhat-list-bounces at redhat.com] On Behalf Of 
> Andrew.Bridgeman at corusgroup.com
> Sent: Tuesday, April 04, 2006 9:30 AM
> To: General Red Hat Linux discussion list
> Subject: RE: kswapd running at 100% - Slowing down Machine
> 
> 
> 
> Thanks for the reply. I am going to try and stay away from 
> upgrading the kernel for now. I have looked at the bug you 
> suggested and noted the number down. I am struggling finding 
> the area on the redhat website where i can download the 
> recommended fix, i assume it is just in a rpm package!. Could 
> you send us a link if you wouldn't mind to the area i need to look at?
> 
> Regards
> 
> Andrew Bridgeman
> |+-------------------------+----------------------------------
> -----------|
> ||   "Esquivel, Vicente"   |                                  
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> ||   <Esquivelv at uhd.edu>   |           To:        "General 
> Red Hat Linux |
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> ||   redhat-list-bounces at re|           cc:                    
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> ||   dhat.com              |           Subject:        RE: 
> kswapd running|
> ||                         |   at 100% - Slowing down Machine 
>            |
> ||   04/04/2006 14:22      |                                  
>            |
> ||   Please respond to     |                                  
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> ||   General Red Hat Linux |                                  
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> 
> 
> 
> 
> 
> 
> > -----Original Message-----
> > From: redhat-list-bounces at redhat.com
> > [mailto:redhat-list-bounces at redhat.com] On Behalf Of 
> > Andrew.Bridgeman at corusgroup.com
> > Sent: Tuesday, April 04, 2006 2:54 AM
> > To: redhat-list at redhat.com
> > Subject: kswapd running at 100% - Slowing down Machine
> >
> >
> >
> > We currently have a problem with one of our production 
> Redhat machines 
> > running kernel 2.4.21-20.ELsmp. It is running really slow 
> and i have 
> > noticed when doing a top the kswapd process is running at 
> 100%. I have 
> > been running this machine now for over a year with no 
> problems so i am 
> > not sure why we suddenly have this issue. I have read on 
> the net that 
> > there are some bug fixes which address this issue but 
> unfortunately we 
> > need to run at this version for software compatibility on 
> the server. 
> > Is there a way of resolving this issue without upgrading the kernel?
> >
> > Any help would be much appreciated.
> >
> > Regards
> >
> > Andrew Bridgeman
> > 
> **********************************************************************
> > This transmission is confidential and must not be used or 
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> **********************************************************************
> >
> 
> It is a know issue with that kernel.  Here is a link that 
> will provide you with some information about the bug:
> https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=132639
> 
> You can use their recommended fix or just update the kernel
> 
> Regards
> 
> Vince
> 
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