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Re: XFS starvation

To: Seth Mos <knuffie@xxxxxxxxx>
Subject: Re: XFS starvation
From: Steve Lord <lord@xxxxxxx>
Date: Mon, 22 Jan 2001 16:35:46 -0600
Cc: ananth@xxxxxxx (Rajagopal Ananthanarayanan), linux-xfs@xxxxxxxxxxx
In-reply-to: Message from Seth Mos <knuffie@xxxxxxxxx> of "Mon, 22 Jan 2001 20:06:33 +0100." <4.3.2.7.2.20010122195443.0410d670@xxxxxxxxxxxxx>
Sender: owner-linux-xfs@xxxxxxxxxxx
> Hi,
> 
> [seth@lsautom large]$ dd if=/dev/zero of=largefile.bin bs=1024 count=3500000
> 3500000+0 records in
> 3500000+0 records out
> [seth@lsautom large]$


Yes, I have seen similar things - I have also recently found ways to deadlock
the system via too much I/O going into XFS. Ananth may have some comments on
dealing with starvation.

Steve

> 
> 
> Kills the machine for the next 3 minutes.
> The system is not usable during this time.
> I had a top open at the time I made the file and it jumped 3 minutes as 
> soon as it was done.
> 
> The CVS tree is of 16-01-01.
> 
> It's running 2.4.0 on RedHat 7 with updates.
> The fs is on a IDE disk in a P3 450 with 128MB ram.
> 
> There was work on a starvation fix, anybody on the status?
> Going to update the tree now.
> 
> Bye
> --
> Seth
> Has anybody seen my lightbulb?
> I _really_ need some light here.



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