I think I am mistaken. If you are only streaming a single channel, the --multi_streamer option will likely not change a thing. I was assuming you had multiple channels. Rob
On Tue, Mar 12, 2024 at 5:40 PM Rob Kossler <rkoss...@nd.edu> wrote: > Your mount command with tmpfs looks correct. Here is what mine is in my > /etc/fstab file (with 264GB avail RAM) > tmpfs /media/ramfolder/ tmpfs rw,nosuid,nodev,size=200G 0 0 > > You might want to try rx_samples_to_file with the --multi_streamer option. > I expect you will get better performance. Also, you can take your RAM FS > size higher from 8G to probably 60G if you want to try bigger recording > depths. > Rob > > On Tue, Mar 12, 2024 at 5:13 PM Marcus D. Leech <patchvonbr...@gmail.com> > wrote: > >> On 12/03/2024 16:11, zackk...@utexas.edu wrote: >> >> Hey Rob and Marcus, >> >> Thanks for the responses! I have a basic understanding of linux, but am >> not very experienced. I tried the following to create the RAM filesystem: >> >> sudo mount -t tmpfs -o size=8G tmpfs /mnt/tmpfs/ >> >> sudo mount -t ramfs -o size=8G ramfs /mnt/ramfs/ >> >> >> And ran the rx_samples_to_file, once with --file /mnt/tmpfs/test.bin, and >> once with --file /mnt/ramfs/test.bin, both times still getting o’s for >> overruns. >> >> By my calculations, at ~500 M complex samples per second, each complex >> sample 4 bytes (defaulting to short for I and Q), that means just 1 second >> of capturing equates to 2 GB of data. My system has 64 GB of RAM. Am I >> creating the RAM filesystem correctly? Am I using it correctly? >> >> >> >> _______________________________________________ >> USRP-users mailing list -- usrp-users@lists.ettus.com >> To unsubscribe send an email to usrp-users-le...@lists.ettus.com >> >> Assuming that you did a "sudo mkdir of /mnt/ramfs" beforehand, this >> should work. >> >> >> _______________________________________________ >> USRP-users mailing list -- usrp-users@lists.ettus.com >> To unsubscribe send an email to usrp-users-le...@lists.ettus.com >> >
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