From: USRP-users <[email protected]> On Behalf Of Marcus D.
Leech via USRP-users
Sent: Friday, March 27, 2020 4:27 PM
To: [email protected]
Subject: [EXTERNAL] Re: [USRP-users] X310 UHD 3.15 Lockups
On 03/27/2020 04:15 PM, Carmichael, Ryan via USRP-users wrote:
I recently updated from 3.11.1 to 3.15LTS to try to resolve a receive lockup
problem, however it still appears to be happening (albeit seemingly less
frequently).
Essentially, stream->recv() gets into a state where it never returns, even
though we are using the default timeout (0.1). Verified via debugger that
recv() itself is just hanging.
We essentially have a function A that roughly looks like the code below (I'm
not leaving much out). We call this function A over and over quite frequently.
Are there any red flags here?
A() {
uhd::stream_cmd_t
rxStreamCmd(uhd::stream_cmd_t::STREAM_MODE_NUM_SAMPS_AND_DONE);
rxStreamCmd.stream_now = true;
rxStreamCmd.time_spec = uhd::time_spec_t();
rxStreamCmd.num_samps = nSamples_a;
rxStream ->issue_stream_cmd(rxStreamCmd);
numReceived = 0;
uhd::rx_metadata_t metaData
while (numReceived < nSamples_a) {
.
.
// calculate numLeftToRead
.
.
uint samplesReceived = rxStream->recv(buffer, numLeftToRead, metaData);
.
.
// calculate numReceived
}
}
This "lockup" typically does not require the radio to be restarted, just my
application.
________________________________
Windows or Linux? Native or VM?
My gut says this is an IP/Network stack issue.
________________________________
Native, RHEL 7 - Linux localhost.localdomain 3.10.0-1062.1.1.el7.x86_64 #1 SMP
Tue Aug 13 18:39:59 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
10 GB NICs. MTUs set to 9000.
0b:00.0 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+
Network Connection (rev 01)
0b:00.1 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+
Network Connection (rev 01)
0d:00.0 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+
Network Connection (rev 01)
0d:00.1 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+
Network Connection (rev 01)
________________________________
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