I tried it, but it did not help. ionice -c2 or ionice -c2. No difference.
Anyways, I now have a record hook in place which moves finished recordings from
SD card to USB drive. SD is now acting like a cache. That works so far.
Am 10.08.2016 um 21:15 schrieb Stephan Loescher:
> You could also try to start VDR with the highest possible IO priority, e.g.
> ionice -c2 -n0 vdr ...
> That helped some years ago on my old VDR server to ensure, that no other
> process gets more IO priority than VDR.
> Am 08/08/2016 um 10:53 PM schrieb Patrick Boettcher:
>> On Mon, 8 Aug 2016 22:51:13 +0200
>> Patrick Boettcher <patrick.boettc...@posteo.de> wrote:
>>> On Mon, 8 Aug 2016 20:30:33 +0200
>>> Matthias Bodenbinder <matth...@bodenbinder.de> wrote:
>>>> Hello Christoph,
>>>> based on your feedback I made another test. The USB HD performance
>>>> seems to be ok (see my other reply). But anyways I made a test with
>>>> recording directly to the Flash SD card. And that works pretty well.
>>>> 15 min without issue. So it looks like it is indeed an issue with
>>>> USB on the Raspberry PI 2. Any idea how to solve that?
>>> It _could_ be the write-cache-flush which saturates the bus and then
>>> dramatically decreases I/O of the overall system.
>>> hdparm -W 0 /dev/<partition>
>> You could also try iotop, which should I/O activity of all processes,
>> maybe there is something going on.
>> sudo apt install iotop
>> sudo iotop
> vdr mailing list
vdr mailing list