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2020-07-16misc: add callback hooks and refactor pmcTom Seidenberg1-10/+69
Callbacks for monitoring and performance measurement: - Add new callback list type, with context - Add callbacks for API, CLI, and barrier sync - Modify node dispatch callback to pass plugin-specific context - Modify perfmon plugin to keep PMC samples local to the plugin - Include process nodes in dispatch callback - Pass dispatch function return value to callback Type: refactor Signed-off-by: Tom Seidenberg <tseidenb@cisco.com> Change-Id: I28b06c58490611e08d76ff5b01b2347ba2109b22
2020-06-16vlib: address sanitizer support for stack switch, enable clangDamjan Marion1-0/+4
Type: improvement Change-Id: I81df4b61d1f0b8c1df77c1ee9bebcb491e155b69 Signed-off-by: Damjan Marion <damarion@cisco.com>
2020-04-28vlib: add ASSERT to vlib_time_now(...)Dave Barach1-0/+7
Calling vlib_time_now (&vlib_global_main) from a worker thread is a bad mistake. ASSERT (vm->thread_index == __os_thread_index) will catch it. Type: improvement Signed-off-by: Dave Barach <dave@barachs.net> Change-Id: I55af6de84e06143f8f43adc62103b77267a7a441
2020-04-13buffers: configurable buffer fault injectorDave Barach1-0/+4
When configured at compile time via the cmake VPP_BUFFER_FAULT_INJECTOR option, the buffer allocator will appear to fail a certain fraction of the time. By default, the allocator succeeds 80% of the time. Detailed command line configuration options are available, but only when the image has been compiled with cmake option described above: vlib { buffer-alloc-success-rate [0.0 ... 1.0] buffer-alloc-success-seed <nnnn> } Modify vlib_buffer_pool_create(...) so 0 is always an invalid buffer index. Debug images: add checks for bad buffer index enqueues, and also verify that f->n_vectors doesn't accidentally map one or more instances of the frame poison pattern 0xfefefefe. Type: improvement Signed-off-by: Dave Barach <dave@barachs.net> Change-Id: Iab939858014463d1e664682805013d334d6fcbe5
2020-02-18vlib: calculate per-worker loops/second metricDave Barach1-0/+8
Use exponential smoothing. Each sample has a half-life of 1 second. reported_rate(t) = reported_rate(t-1) * K + rate(t)*(1-K) Sample every 20ms, i.e. 50 samples per second K = exp (-1.0/20.0); K = 0.95; Type: feature Signed-off-by: Dave Barach <dave@barachs.net> Change-Id: I9aea5dd5fecfaefffb78245316adb4bf62eb2bd4
2019-12-05classify: vpp packet tracer supportDave Barach1-0/+10
Configure n-tuple classifier filters which apply to the vpp packet tracer. Update the documentation to reflect the new feature. Add a test vector. Type: feature Signed-off-by: Dave Barach <dave@barachs.net> Change-Id: Iefa911716c670fc12e4825b937b62044433fec36
2019-10-02vlib: improve summary vector-rate statisticsDave Barach1-58/+32
Type: refactor Signed-off-by: Dave Barach <dave@barachs.net> Change-Id: I4b77879b0a84fdec3c1518a972cf003d5135222d Signed-off-by: Ole Troan <ot@cisco.com>
2019-09-23misc: unify pcap rx / tx / drop traceDave Barach1-2/+9
Use a single vnet_pcap_t in vlib_global_main, specifically to support unified tracing Update sphinx docs, doxygen tags Type: refactor Ticket: VPP-1776 Signed-off-by: Dave Barach <dave@barachs.net> Change-Id: Id15d41a596712968c0714cef1bd2cd5bc9cbdd55
2019-09-20misc: classifier-based packet trace filterDave Barach1-0/+1
See .../src/vnet/classify/trace_classify.h for the business end of the scheme. It would be best to hash pkts, prefetch buckets, and do the primary table lookups two at a time. The inline as given works, but perf tuning will be required. "At least it works..." Add "classify filter" debug cli, for example: classify filter mask l3 ip4 src dst \ match l3 ip4 dst 192.168.2.10 src 192.168.1.10 Add "pcap rx | tx trace ... filter" to use the current classify filter chain Patch includes sphinx documentation and doxygen tags. Next step: device-driver integration Type: feature Signed-off-by: Dave Barach <dave@barachs.net> Change-Id: I05b1358a769f61e6d32470e0c87058f640486b26
2019-09-07vlib: clean up the "pcap dispatch trace" debug CLIDave Barach1-0/+13
Separate debug CLI arg parsing from the underlying action function. Fixes a number of subtle ordering dependencies, and will allow us to add a binary API to control the feature at some point in the future. Type: refactor Ticket: VPP-1762 Signed-off-by: Dave Barach <dave@barachs.net> Change-Id: I1240fe3f61a0acf5ee9faed60d6ad3386e72e569
2019-08-01interface: fix pcap tx/rx trace cli handlingJohn Lo1-6/+0
Provide default packet_to_capture value. Display interface name correctly for "pcap tx/rx trace status". Type: fix Signed-off-by: John Lo <loj@cisco.com> Change-Id: I7064d0dbea236a9aff68bba7fbaf2c4a73b16c6f Signed-off-by: John Lo <loj@cisco.com>
2019-05-24Add callback multiplex supportDave Barach1-6/+12
Change-Id: Iddeb3a1b0e20706e72ec8f74dabc60b342f003ba Signed-off-by: Dave Barach <dave@barachs.net>
2019-05-01Add node, frame to vlib main loop perf analysis callback argumentsDave Barach1-1/+3
Change-Id: Iaa5cd89791b0dfdb56a75009c564581d10696d83 Signed-off-by: Dave Barach <dave@barachs.net>
2019-03-12Perf tune handoff queue pollingDave Barach1-0/+3
Change-Id: I5cfa0f6eee67156bf87907fcf8a39f16d68a0905 Signed-off-by: Dave Barach <dave@barachs.net>
2019-02-26Move pcap rx/tx trace code out of the dpdk pluginDave Barach1-0/+16
Moved code to the ethernet input node, and the interface output path(s). Since we no longer skip ethernet-input, there's no reason for device drivers to know anything about pcap rx tracing, etc. Change-Id: I08d32fb1b90cbee1bd4f609837d533e047b36fa4 Signed-off-by: Dave Barach <dave@barachs.net>
2019-02-20calculate per-thread time offsetDave Barach1-1/+4
The main thread squirrels away vlib_time_now (&vlib_global_main), worker threads use it to calculate an offset in f64 seconds from their own vlib_time_now(vm) value. We use that offset until the next barrier sync. Thanks to Damjan for the suggestion. Change-Id: If56cdfe68e5ad8ac3b0d0fc885dc3ba556cd1215 Signed-off-by: Dave Barach <dave@barachs.net>
2019-02-02CLI control of graph dispatch elogsDave Barach1-0/+3
Change-Id: I195c8eabc0ee67880f1e85fc7594b00be6b563e3 Signed-off-by: Dave Barach <dave@barachs.net>
2019-01-30buffers: major cleanup and improvementsDamjan Marion1-3/+0
This patch introduces following changes: - deprecated free lists which are not used and not compatible with external buffer managers (i.e. DPDK) - introduces native support for per-numa buffer pools - significantly improves performance of buffer alloc and free Change-Id: I4a8e723ae47056717afd6cac0efe87cb731b5be7 Signed-off-by: Damjan Marion <damarion@cisco.com>
2019-01-27Fix issue with cpu_id and numa_code captured too earlyDamjan Marion1-1/+1
Change-Id: I79b213b34c6071d14acf1922f89037a4a5a36c45 Signed-off-by: Damjan Marion <damarion@cisco.com>
2019-01-24perfmon plugin: 2-way parallel stat collectionDave Barach1-3/+2
As a FUD reduction measure, this patch implements 2-way parallel counter collection. Synthetic stat component counter pairs run at the same time. Running two counters (of any kind) at the same time naturally reduces the aggregate time required by an approximate factor-of-2, depending on whether an even or odd number of stats have been requested. I don't completely buy the argument that computing synthetic stats such as instructions-per-clock will be inaccurate if component counter values are collected sequentially. Given uniform traffic pattern, it must make no difference. As the collection interval increases, the difference between serial and parallel component counter collection will approach zero, see also the Central Limit theorem. Change-Id: I36ebdcf125e8882cca8a1929ec58f17fba1ad8f1 Signed-off-by: Dave Barach <dave@barachs.net>
2019-01-20buffers: keep buffer_main in vlib_main_tDamjan Marion1-0/+3
Change-Id: I3bb1d9f83dd08f4b93acd4a281bfec0674e39c2e Signed-off-by: Damjan Marion <damarion@cisco.com>
2019-01-20Store numa-noda and cpu-index in vlib_main_tDamjan Marion1-1/+3
Change-Id: If88ccd965122b9318a39a8d71b53334cd1fd81e4 Signed-off-by: Damjan Marion <damarion@cisco.com>
2018-11-30Metadata / opaque formatting belongs in vppDave Barach1-0/+1
VPP graph dispatch trace record description: 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Major Version | Minor Version | NStrings | ProtoHint | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Buffer index (big endian) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + VPP graph node name ... ... | NULL octet | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Buffer Metadata ... ... | NULL octet | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Buffer Opaque ... ... | NULL octet | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Buffer Opaque 2 ... ... | NULL octet | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | VPP ASCII packet trace (if NStrings > 4) | NULL octet | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Packet data (up to 16K) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Graph dispatch records comprise a version stamp, an indication of how many NULL-terminated strings will follow the record header, and a protocol hint. The buffer index allows downstream consumers of these data to easily filter/track single packets as they traverse the forwarding graph. FWIW, the 32-bit buffer index is stored in big endian format. As of this writing, major version = 1, minor version = 0. Nstrings will be either 4 or 5. Here is the current set of protocol hints: typedef enum { VLIB_NODE_PROTO_HINT_NONE = 0, VLIB_NODE_PROTO_HINT_ETHERNET, VLIB_NODE_PROTO_HINT_IP4, VLIB_NODE_PROTO_HINT_IP6, VLIB_NODE_PROTO_HINT_TCP, VLIB_NODE_PROTO_HINT_UDP, VLIB_NODE_N_PROTO_HINTS, } vlib_node_proto_hint_t; Example: VLIB_NODE_PROTO_HINT_IP6 means that the first octet of packet data SHOULD be 0x60, and should begin an ipv6 packet header. Change-Id: Idf310bad80cc0e4207394c80f18db5f77c378741 Signed-off-by: Dave Barach <dave@barachs.net>
2018-11-20Add buffer tracing to the dispatch tracerDave Barach1-0/+3
Change-Id: I56f25d653b71a25c70e6c5c1a93dd9c5158f2079 Signed-off-by: Dave Barach <dave@barachs.net>
2018-11-17pcap-based dispatch tracerDave Barach1-0/+5
To facilitate dispatch trajectory tracing, vlib_buffer_t decoding, etc. through Wireshark Change-Id: I31356b9fa1f40cba8830aaf10a86a9fbb7546438 Signed-off-by: Dave Barach <dave@barachs.net>
2018-11-01Move RPC calls off the binary API input queueDave Barach1-1/+3
Change-Id: I2476e3e916a42b41d1e66bfc1ec4f8c4264c1720 Signed-off-by: Dave Barach <dbarach@cisco.com>
2018-10-25Revert "Keep RPC traffic off the shared-memory API queue"Florin Coras1-1/+0
This reverts commit 71615399e194847d7833b744caedab9b841733e5. There seems to be an issue with ARPs when running with multiple workers. Change-Id: Iaa68081512362945a9caf24dcb8d70fc7c5b75df Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-10-24Keep RPC traffic off the shared-memory API queueDave Barach1-0/+1
Change-Id: Ib5c346641463768cf33eaf8cb5fab5b63171398d Signed-off-by: Dave Barach <dave@barachs.net>
2018-10-23Numa-aware, growable physical memory allocator (pmalloc)Damjan Marion1-17/+2
Change-Id: Ic4c46bc733afae8bf0d8146623ed15633928de30 Signed-off-by: Damjan Marion <damarion@cisco.com>
2018-10-22X86_64 perf counter pluginDave Barach1-0/+9
Change-Id: Ie5a00c15ee9536cc61afab57f6cadc1aa1972f3c Signed-off-by: Dave Barach <dave@barachs.net>
2018-10-01API / CLI event-log tracingDave Barach1-4/+4
Add an "elog trace [api][cli][barrier]" debug CLI command. Removed the barrier elog test command. Remove unused reliable multicast code. Change-Id: Ib3ecde901b7c49fe92b313d0087cd7e776adcdce Signed-off-by: Dave Barach <dave@barachs.net>
2018-09-03Deprecate old buffer replication schemeDamjan Marion1-3/+0
Change-Id: I1f54b994425c58776e1445c8d9fe142e7a644d3d Signed-off-by: Damjan Marion <damarion@cisco.com>
2018-07-18Add config option to use dlmalloc instead of mheapDave Barach1-1/+6
Configure w/ --enable-dlmalloc, see .../build-data/platforms/vpp.mk src/vppinfra/dlmalloc.[ch] are slightly modified versions of the well-known Doug Lea malloc. Main advantage: dlmalloc mspaces have no inherent size limit. Change-Id: I19b3f43f3c65bcfb82c1a265a97922d01912446e Signed-off-by: Dave Barach <dave@barachs.net>
2018-06-03dpdk: improve buffer alloc perfomanceDamjan Marion1-2/+0
This is ~50% improvement in buffer alloc performance. For a 256 buffer allocation, it was ~10 clocks/buffer, now is < 5 clocks. Change-Id: I97590e240a79a42bcab5eb26587fc2d11e6eb163 Signed-off-by: Damjan Marion <damarion@cisco.com>
2018-03-27vlib: make cloned structures cacheline alignedDamjan Marion1-0/+1
This address crash with gcc-7 observed when -o3 is used. Change-Id: I10e87da8e5037ad480eba7fb0aaa9a657d3bf48d Signed-off-by: Damjan Marion <damarion@cisco.com>
2018-03-14vlib: internal buffer manager reworkDamjan Marion1-1/+5
- buffer_main is no longer part of vlib_main_t - pool of free lists is still part of vlib_main_t - mheap is not used anymore for buffer allocation - simple bitmap bassed buffer alloc scheme is introduced Change-Id: I3e1e6d00e2c8122293ed0a741245eb841315a1ff Signed-off-by: Damjan Marion <damarion@cisco.com>
2018-03-05physmem: keep only one physmem_mainDamjan Marion1-2/+0
We don't need per vlib_main physmem_main, so keep it separatelly instead of trying to keep them in sync. Change-Id: I0fbeecf4d9672d31af7a43c640a7d8f05dd6e46f Signed-off-by: Damjan Marion <damarion@cisco.com>
2017-12-15VPP-1102: fix dangling references in RPC handlingDave Barach1-0/+3
Queue RPC calls and send them from the main dispatch loop. As things stood, if the vpp main input queue filled, worker threads could enter a barrier-sync spin-wait in the middle of processing a frame. If thread 0 decided to recreate worker thread data structures, the worker thread(s) could easily crash. Legislate the problem out of existence by enqueueing RPC messages only from the main dispatch loop. At that point, doing a barrier-sync wait is perfectly OK. Change-Id: I18da3e44bb1f29a63fe5f30cf11de732ecfd5bf7 Signed-off-by: Dave Barach <dave@barachs.net>
2017-10-14VPP-1029: Don't call clib_longjmp(...) directly from the SIGTERM handlerDave Barach1-0/+5
It's way too easy to imagine leaving a mutex or a spin-lock held in the /vpe-api shared-memory segment, or elsewhere. Set a volatile variable and check it in a safe place... Change-Id: I9d91c38cffeb921143c272162d055c9c24a6c312 Signed-off-by: Dave Barach <dave@barachs.net>
2017-09-11Recombine diags and minimum barrier open time changes (VPP-968)Colin Tregenza Dancer1-0/+9
Support logging to both syslog and elog Also include DaveB is_mp_safe fix, which had been lost Change-Id: If82f7969e2f43c63c3fed5b1a0c7434c90c1f380 Signed-off-by: Colin Tregenza Dancer <ctd@metaswitch.com>
2017-09-07vlib physmem reworkDamjan Marion1-2/+14
This patch adds supprot support for multiple numa-aware physmem regions. Change-Id: I5c69a6f4da33c8ee21bdb8604d52fd2886f2327e Signed-off-by: Damjan Marion <damarion@cisco.com>
2017-09-05Refork worker thread data structures in parallel (VPP-970)Colin Tregenza Dancer1-0/+6
Change the rebuilding of worker thread clone datastructures to run in parallel on the workers, instead of serially on main. Change-Id: Ib76bcfbef1e51f2399972090f4057be7aaa84e08 Signed-off-by: Colin Tregenza Dancer <ctd@metaswitch.com>
2017-05-16VPP-845: add configurable elog post-mortem dumpDave Barach1-0/+4
Off by default. Enable via cmdline "... vlib { elog-post-mortem-dump } ..." Change-Id: I2056b9de9b37475f2bfeeb5404da838f1b42645a Signed-off-by: Dave Barach <dave@barachs.net>
2017-05-10completelly deprecate os_get_cpu_number, replace new occurencesDamjan Marion1-1/+1
Change-Id: I82c663bc0866c6c68ba354104b0bb059387f4b9d Signed-off-by: Damjan Marion <damarion@cisco.com>
2017-04-06Use thread local storage for thread indexDamjan Marion1-1/+1
This patch deprecates stack-based thread identification, Also removes requirement that thread stacks are adjacent. Finally, possibly annoying for some folks, it renames all occurences of cpu_index and cpu_number with thread index. Using word "cpu" is misleading here as thread can be migrated ti different CPU, and also it is not related to linux cpu index. Change-Id: I68cdaf661e701d2336fc953dcb9978d10a70f7c1 Signed-off-by: Damjan Marion <damarion@cisco.com>
2017-03-31vlib: extend foreach_vlib_main macro to assert if workers are not parkedDamjan Marion1-0/+3
Change-Id: I6ff7b65a400734a47bc0a7d03faf86ef1cf4f8c8 Signed-off-by: Damjan Marion <damarion@cisco.com>
2017-03-16vlib: make runtime_data thread-localDamjan Marion1-0/+1
Change-Id: I4aa3e7e42fb81211de1aed07dc7befee87a1e18b Signed-off-by: Damjan Marion <damarion@cisco.com>
2017-03-10vlib: deduplicatee code in main and worker main loopDamjan Marion1-0/+2
Change-Id: Id18d59c9442602633a6310b2001a95bce8b6b232 Signed-off-by: Damjan Marion <damarion@cisco.com>
2016-12-28Reorganize source tree to use single autotools instanceDamjan Marion1-0/+333
Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23 Signed-off-by: Damjan Marion <damarion@cisco.com>