Hello Marko I confirm this patch reduces the amount of interrupts to nearly one third:
[*] v4l mercurial wo patch: about 600 calls/sec over a 10 seconds interval [*] v4l mercurial with patch: about 160 calls/sec over a 10 seconds interval Measured using powertop -t 10 Tuning a Twinhan/Azurewave AD SP400 CI (VP-1041) with szap The same ratio using vdr 1.7.15 + xineliboutput + vdr-sfxe: [*] wo patch: about 1100 calls/sec over a 10 seconds interval [*] with patch: about 320 calls/sec over a 10 seconds interval Regards, Stefan > > This patch obsoletes patch with broken spaces > https://patchwork.kernel.org/patch/107036/ > > With VDR streaming HDTV into network, generating an interrupt once per 16kb, > implemented in this patch, seems to support more robust throughput with > HDTV. > Fix leaking almost 64kb data from the previous TS after changing the TS. > One effect of the old version was, that the DMA transfer and driver's > DMA buffer access might happen at the same time - a race condition. > > Signed-off-by: Marko M. Ristola <marko.rist...@xxxxxxxxxxxx> > > Regards, > Marko Ristola > -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
