Bug 213827
| Summary: | Stall In TCP/IP | ||
|---|---|---|---|
| Product: | Networking | Reporter: | Tom Martens (martenst) |
| Component: | Other | Assignee: | Stephen Hemminger (stephen) |
| Status: | NEW --- | ||
| Severity: | normal | ||
| Priority: | P1 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Kernel Version: | Observed 5.9.2. Confirmed on 5.12 and 5.13 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: | A basic repro of the observed issue. | ||
Created attachment 298007 [details] A basic repro of the observed issue. We see an unexpected pause of 3-60 seconds where the test no longer receives data, recv() is blocking, netstat shows data is sitting in the 7777 server's send queue and 0 bytes are in the test's receive queue. Setting net.core.rmem_max seems to be a key factor. For our testing we used net.core.rmem_max=16777216 See attached README and repro.