Thanks for your suggestion, Marcus.
On Tuesday, 7 September 2021, 14:21:19 BST, Marcus D. Leech
<[email protected]> wrote:
On 2021-09-07 8:12 a.m., zhou wrote:
Hi Marcus,
Thanks for your comments on my other USRP questions. I have another issue
with N321 USRP. Following the tuning tips in
https://kb.ettus.com/USRP_Host_Performance_Tuning_Tips_and_Tricks , I have set
wmem_max, wmem_default, rmem_max, rmem_default to 33554432 in host (Ubuntu):
sudo sysctl -w net.core.wmem_max=33554432
sudo sysctl -w net.core.rmem_max=33554432
sudo sysctl -w net.core.wmem_default=33554432
sudo sysctl -w net.core.rmem_default=33554432 I have made the
configuration permanent by adding these lines in /etc/sysctl.conf, such that
they won't get lost after host reboot.
I want to do the same in N321 but couldn't because there is no sysctl.conf in
it. I can still configure these parameters from terminal, but it won't survive
a reboot. The Linux in N321 is tiny. How can I make the configuration
permanently in it?
Any comment from the community will be appreciated.
Thanks, Hongwei
I don't have an N321 myself, but you will probably find that there's an
/etc/sysctl.conf.d directory, and you can create a sysctl.conf file there.
But unless you're using the N321 like it's an ordinary host, talking to an
*external* USRP, you shouldn't need to adjust these parameters.
When you're streaming samples into/out-of the N321, they don't go through the
CPU portion of the Zynq at all, so these parameters aren't relevant.
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