You'll likely have to buffer the output to a ramdisk and then slowly bleed that to the disk. Compression typically doesn't work well on IQ data unless you've got a structured signal in there. If there's a lot of white noise, you won't get much compression
On Sat, Jul 16, 2016 at 12:00 AM Dave NotTelling <[email protected]> wrote: > Anyone have experience with streaming 100+ MSPS of 16 bit IQ data through > a compression tool and then to disk? I'd like to be able to take really > wide band snaps for several minutes. Currently that would take up 16 * 2 * > SAMP_RATE bits per second. So, for 200 MSPS that would end up being 800 > MBytes/s. That rate eats up a hard drive pretty quickly. Running it > through gzip by way of pigz was my first thought, but even on an 8 core > Intel machine pigz just can't keep up. I can sustain maybe 300 MBytes/s > but that's it. And I know it's not a hard disk limitation as the M.2 drive > I am using can easily sustain 800 MBytes/s of uncompressed data. > > Thoughts? > > Thank you! > > > -Dave > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > -- Very Respectfully, Dan CaJacob
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