Messages in this thread | | | Date | Mon, 20 Dec 1999 14:45:35 +0200 | From | Petri Kaukasoina <> | Subject | Re: Fix for ide problems in 2.2.14pre15 |
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On Mon, Dec 20, 1999 at 06:31:51PM +0900, Yasuhide OOMORI wrote: > On Mon, Dec 20, 1999 at 08:05:47AM +0200, > Petri Kaukasoina <kaukasoi@elektroni.ee.tut.fi> wrote: > >2.2.14pre15 + ide-2.2.14pre15.fix4: > > hdparm -m16 -u1 /dev/hda : memory corruption > > How can I see the existence of memory corruption?
Run two memtest processes (by Simon Kirby, ftp://blue.netnation.com/pub/memtest.c) with memory sizes of 2/3 of the total ram so that the machine swaps heavily when the two processes are fighting for resident memory. After a few minutes one of the memtest processes reports memory error. It means that there has been an error in either writing data to swap or reading it back. The memory corruption is silent so that there are no error messages in syslog nor does the memtest process die of any signal.
I use PIO mode in multiple sector mode (IDE block mode). The problem does not affect modern systems which use DMA.
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