This patchset cleans up telemetry support for "in-memory" mode, so that multiple independent processes can be run using that mode and still have telemetry support. It also removes problems of one process removing the socket of another - which was the original issue reported. The main changes in this set are to:
* disable telemetry for secondary processes, which prevents any socket conflicts in multi-process cases. * when multiple processes are run using the same runtime directory (i.e. "in-memory" mode or similar), add a counter suffix to the socket names to avoid conflicts over the socket. Each process will use the lowest available suffix, with the first process using the directory, not adding any suffix. * update the telemetry script and documentation to allow it to connect to in-memory DPDK processes. --- V9: sort output lines in help text in script V8: Merged patches 2 & 3 of the set together. Fixed some checkpatch warnings flagged by the CI. V7: Change from adding a pid suffix generally in "in-memory" mode, to adding an increasing counter as a suffix in case of name conflicts generally. This achieves the same result in terms of connectivity, but keeps compatibility of behaviour for the case of a single in-memory process, while also providing predictable more socket names for each process i.e. 4 running in-memory instances they will always use suffixes 1-3 for the extra 3 sockets, even across restarts. V6: fixed issue whereby the failing of the legacy telemetry init would roll-back init of the v2 telemetry, causing the socket to be deleted, even though it was still necessary. V5: Rebase on latest main after other script cleanups were merged V4: Move from simple-fix patch to proper fix patchset V3: Drop CC stable, as will have separate backport patch which does not error out, so avoiding causing problems with currently running application V2: fix build error on FreeBSD Bruce Richardson (4): eal: limit telemetry to primary processes telemetry: fix socket path conflicts for in-memory mode usertools/dpdk-telemetry: connect to separate instances usertools/dpdk-telemetry: provide info on available sockets doc/guides/howto/telemetry.rst | 41 +++++++++++++++++++++ lib/eal/freebsd/eal.c | 2 +- lib/eal/linux/eal.c | 2 +- lib/telemetry/telemetry.c | 65 +++++++++++++++++++++++++--------- usertools/dpdk-telemetry.py | 45 ++++++++++++++++++++--- 5 files changed, 133 insertions(+), 22 deletions(-) -- 2.30.2
