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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