[Elphel-support] Experiencing problems with buffer.

Sebastian Pichelhofer sebastian.pichelhofer at gmail.com
Thu Sep 15 06:42:16 PDT 2011


Maybe it would make sense to monitor CPU load while you start
recording with/without streamer?

Could you run "top" on the camera in telnet/ssh?

Regards Sebastian

On Sun, Sep 11, 2011 at 13:37, Nathan Clark <nathan at nathanclark.com.au> wrote:
> Hi guys,
> Sebastian has been helping me troubleshoot this issue, but we decided its
> best to bring it to the support list.
> I'm having problems with recording to SSD (over sata).
> It seems that the maximum datarate I can record is about 68 Mbit/s (above
> which the buffer overruns constantly)
> Interestingly, if I am viewing the rtsp stream at the same time as
> recording, the maximum datarate is crippled further causing overrun at
> anything over about 46 Mbit/s
> I have run the following command through telnet, to test the SSD:
> time dd if=/dev/circbuf of=/var/hdd/test1.dd bs=1M
> yielding the following results:
> 18+1 records in
> 18+1 records out
> real    0m 1.12s
> user    0m 0.01s
> sys     0m 1.04s
> Any ideas on what might be going on would be appreciated.
>
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