monitoring swap i/o

monitoring swap i/o

[Pol]

I would like to be able to exactly monitor programs i/o in the swap
area; 'top' does not seem to be the right tool as processes are sorted
according to the total amount of swap space used, while i would like
processes with high i/o activity (albeit in small amounts) to be
highlighted. 

My case is with firefox and konqueror. They stay silently for hours, then
i/o starts, as one can hear that typical noise from the disk and as it can
be checked with 'vmstat'.  
Also i would like to locate programs more precisely, to tell which browser
tab, which plugin has triggered that swapping.  

Any hints?

Thank you

--
Pol 

Re: monitoring swap i/o

[Ron Herbert]

looks on "sar" you can report statistics for a given process (or from
the system)

Firefox: i think firefox is a monolith a tab isn't a childprozess (may
be you find a addone, that say you more about firefox)


fridy

2009/1/11, Pol <linux_milano@yahoo.it>:
>
> I would like to be able to exactly monitor programs i/o in the swap
> area; 'top' does not seem to be the right tool as processes are sorted
> according to the total amount of swap space used, while i would like
> processes with high i/o activity (albeit in small amounts) to be
> highlighted.
>
> My case is with firefox and konqueror. They stay silently for hours, then
> i/o starts, as one can hear that typical noise from the disk and as it can
> be checked with 'vmstat'.
> Also i would like to locate programs more precisely, to tell which browser
> tab, which plugin has triggered that swapping.
>
> Any hints?
>
> Thank you
>
> --
> Pol
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-admin" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>

Re: monitoring swap i/o

[Adrian Calinescu]

Hello,

> Firefox: i think firefox is a monolith a tab isn't a childprozess (may
> be you find a addone, that say you more about firefox)

You are right, the only browser I know of that runs every tab as a separate 
process is Chrome.

--Adrian.

--------------------------------------------------
From: "Ron Herbert" <1.fridy@gmail.com>
Sent: Tuesday, January 13, 2009 11:05 AM
To: <linux_milano@yahoo.it>
Cc: <linux-admin@vger.kernel.org>
Subject: Re: monitoring swap i/o

> looks on "sar" you can report statistics for a given process (or from
> the system)
>
> Firefox: i think firefox is a monolith a tab isn't a childprozess (may
> be you find a addone, that say you more about firefox)
>
>
> fridy
>
> 2009/1/11, Pol <linux_milano@yahoo.it>:
>>
>> I would like to be able to exactly monitor programs i/o in the swap
>> area; 'top' does not seem to be the right tool as processes are sorted
>> according to the total amount of swap space used, while i would like
>> processes with high i/o activity (albeit in small amounts) to be
>> highlighted.
>>
>> My case is with firefox and konqueror. They stay silently for hours, then
>> i/o starts, as one can hear that typical noise from the disk and as it 
>> can
>> be checked with 'vmstat'.
>> Also i would like to locate programs more precisely, to tell which 
>> browser
>> tab, which plugin has triggered that swapping.
>>
>> Any hints?
>>
>> Thank you
>>
>> --
>> Pol
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-admin" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-admin" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html 

Re: monitoring swap i/o

[Chamith Kumarage]

+1 for "sar"...another option would be to use "iostat"..

Running "iostat" with a "tail -f" might be what you are looking for..

~Chamith

On Tue, 2009-01-13 at 10:05 +0100, Ron Herbert wrote:
> looks on "sar" you can report statistics for a given process (or from
> the system)
> 
> Firefox: i think firefox is a monolith a tab isn't a childprozess (may
> be you find a addone, that say you more about firefox)
> 
> 
> fridy
> 
> 2009/1/11, Pol <linux_milano@yahoo.it>:
> >
> > I would like to be able to exactly monitor programs i/o in the swap
> > area; 'top' does not seem to be the right tool as processes are sorted
> > according to the total amount of swap space used, while i would like
> > processes with high i/o activity (albeit in small amounts) to be
> > highlighted.
> >
> > My case is with firefox and konqueror. They stay silently for hours, then
> > i/o starts, as one can hear that typical noise from the disk and as it can
> > be checked with 'vmstat'.
> > Also i would like to locate programs more precisely, to tell which browser
> > tab, which plugin has triggered that swapping.
> >
> > Any hints?
> >
> > Thank you
> >
> > --
> > Pol
> >
> > --
> > To unsubscribe from this list: send the line "unsubscribe linux-admin" in
> > the body of a message to majordomo@vger.kernel.org
> > More majordomo info at  http://vger.kernel.org/majordomo-info.html
> >
> --
> To unsubscribe from this list: send the line "unsubscribe linux-admin" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
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