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[ts-7000] Re: data logging without flash fatigue

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Subject: [ts-7000] Re: data logging without flash fatigue
From: "j.chitte" <>
Date: Sat, 29 Mar 2008 12:24:22 -0000
--- In  Triffid Hunter <> 
wrote:
>
> On Sat, 29 Mar 2008, j.chitte wrote:
> 
> > Hi,
> >
> > I am needing to log data once a second, although this is not 
enormous
> > it seems sufficiently frequent to reduce long term life of the 
root
> > fs on the onboard flash device (and hence effective board death).
> >
> > I'd thought of creating a small ramdisk and setting up a cron to 
save
> > it every hour.
> >
> > Is there a better/alternative technique?
> >
> > Thanks for any suggestions from those who have found solution to 
this
> > issue. Also any caveats to be aware of (apart from the obvious
> > turning off apache logs).
> >
> > TIA, jacques.
> 
> 1gb usb stick is your friend. so cheap you can just replace when 
it wears 
> out.
> 
> Setting disk commit inverval to 1-10 minutes will help too.
>

Yes, a usb stick is one solution but a usb connection it is about the 
most mechanically non rubust thing I can think of , unlike the board 
itself to this seems to rather knock the robustness of the TS boards 
for 6. I'd like to remain onboard is poss.


I believe the commit interval is a ext3 function isn't it, the on 
board fs is yaffs2. Please correct me if I'm wrong.

thanks for your suggestions. I will try to find some equiv of commit 
interval if that exists on yaffs.

/js




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