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May 2010

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persistence-across-reboot
by Paul Reed 31 May '10

31 May '10

Hi folks, Another reason to use a filesystem driver with flash memory is to take advantage of the implementation of wear-levelling (assuming it isn't handled by the hardware), although this would of course be less important if the memory was solely used for persistence across reboots. Checkpointing the system state every couple of minutes would be a useful defence against power failure, too - but then you would definitely want to look at how many write cycles your device claims to last for :) Cheers, Paul > Message: 1 > Date: Wed, 14 Apr 2010 18:29:55 +0200 > From: Peter Matthias <PeterMatthias(a)web.de> > Subject: Re: [Oberon] Re (3): persistence-across-reboot > To: ETH Oberon and related systems <oberon(a)lists.inf.ethz.ch> > Message-ID: <201004141829.55153.PeterMatthias(a)web.de> > Content-Type: Text/Plain; charset="iso-8859-15" > > Am Mittwoch 14 April 2010 schrieb peasthope(a)shaw.ca: >> All the non-volatile storage I've heard of organizes >> data as files in a filesystem. Does anyone sell >> flash memory which is accessed by an address just >> as RAM is? > > You can use a block device driver and mmap it to the address space, as it > it > done in Linux. > > Peter > > > ------------------------------ > > -- > Oberon(a)lists.inf.ethz.ch mailing list for ETH Oberon and related systems > https://lists.inf.ethz.ch/mailman/listinfo/oberon > > > End of Oberon Digest, Vol 76, Issue 2 > ************************************* >

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