[TuxOnIce-devel] [Patch] Test patch for those with I/O speed issues.

dirk husemann hud at zurich.ibm.com
Thu Feb 14 08:59:05 UTC 2008


Nigel Cunningham wrote:
> Hi Dirk.
>
> dirk husemann wrote:
>> Nigel Cunningham wrote:
>>> Hi all.
>>>
>>> Here are test patches which should be of interest to this who've 
>>> been having problems with the I/O speed. I'm providing patches for 
>>> 2.6.23.15 and 2.6.24.1.
>> hi nigel,
>>
>> tested with it 2.6.24.1 to see whether the write-getting-stuck bug 
>> was gone. it seems to have fixed that (did a couple of 
>> suspend--resume cycles now without hitting it). but...resuming from 
>> RAM reliably gets stuck on "reading caches"; it manages to read most 
>> of the stuff back in but the last 7MB or so are never getting through 
>> it seems. hard power-off and restart then resumes from disk and suceeds!
>
> Would you be able to try using kdb (http://wiki.tuxonice.net/KDBUsage) 
> to diagnose what's going on? I'd look in particular at what process is 
> running when the hang occurs, and where the kernel code is sitting. 
> The kernel code is usually called (IIRC) by the last process in the ps 
> list that's named hibernate.
>
ok...will try...might take a bit before i get to it, though.

    cheers,
    dirk

-- 
dr dirk husemann, pervasive computing, ibm zurich research lab
hud at zurich.ibm.com ----- +41 44 724 8573 ----- SL: dr scofield
http://www.zurich.ibm.com/~hud/ ------- http://xyzzyxyzzy.net/




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