[mythtvnz] Pixellation Every ~ 20 minutes

[Paulgir]

On Fri, 05 Oct 2012 23:20:41 +1300, Steve Hodge <stevehodge at gmail.com>  
wrote:

> On Fri, Oct 5, 2012 at 9:52 PM, Stephen Worthington  
> <stephen_agent at jsw.gen.nz> wrote:
>> Yes, that was the problem.  Ext filesystems have a horrible delete
>> process that practically locks up the drive until it completes.  It is
>> only usually a problem with larger files, but that includes almost all
>> video/recording files.  It also happens when a large log file is
>> deleted, which happens from cron jobs.  There is no workaround - you
>> have to use a different filesystem.
>
> There is a workaround and the slow deletes option is it. Instead of  
> deleting a recording in a single operation it >progressively truncates  
> the recording to smaller and smaller sizes before finally deleting it.  
> This avoids the >issue as fewer file blocks are unlinked in each  
> operation.
>
>> If there are multiple deletions
>> coming from MythTV, there is an option somewhere for "slow deletes" or
>> something like that, which I think prevents back-to-back deletes from
>> making the problem even worse.
>
> No, it's got nothing to do with multiple deletes.
>
> Deletes don't seem to be the problem here though.
>
> Cheers,
> Steve



Sorry that should read: "At around 22:55:00 till 22:57:24 the recording  
exihibits the pixellation".
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