From a23197980e40d4d9414bcfaf59005a1dc2a89251 Mon Sep 17 00:00:00 2001 From: sreejith Date: Wed, 29 Mar 2017 01:15:02 -0400 Subject: Added vpp intial source code from master branch 17.01.1 Change-Id: I81bdace6f330825a1746a853766779dfb24765fd Signed-off-by: sreejith --- vpp/vlib/vlib/threads_cli.c | 579 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 579 insertions(+) create mode 100644 vpp/vlib/vlib/threads_cli.c (limited to 'vpp/vlib/vlib/threads_cli.c') diff --git a/vpp/vlib/vlib/threads_cli.c b/vpp/vlib/vlib/threads_cli.c new file mode 100644 index 00000000..ee632279 --- /dev/null +++ b/vpp/vlib/vlib/threads_cli.c @@ -0,0 +1,579 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#define _GNU_SOURCE + +#include +#include + +#include +#include + +#if DPDK==1 +#include +#include +#include +#include +#include +#endif + +static u8 * +format_sched_policy_and_priority (u8 * s, va_list * args) +{ + long i = va_arg (*args, long); + struct sched_param sched_param; + u8 *t = 0; + + switch (sched_getscheduler (i)) + { +#define _(v,f,str) case SCHED_POLICY_##f: t = (u8 *) str; break; + foreach_sched_policy +#undef _ + } + if (sched_getparam (i, &sched_param) == 0) + return format (s, "%s (%d)", t, sched_param.sched_priority); + else + return format (s, "%s (n/a)", t); +} + +static clib_error_t * +show_threads_fn (vlib_main_t * vm, + unformat_input_t * input, vlib_cli_command_t * cmd) +{ + vlib_worker_thread_t *w; + int i; + + vlib_cli_output (vm, "%-7s%-20s%-12s%-8s%-25s%-7s%-7s%-7s%-10s", + "ID", "Name", "Type", "LWP", "Sched Policy (Priority)", + "lcore", "Core", "Socket", "State"); + +#if !defined(__powerpc64__) + for (i = 0; i < vec_len (vlib_worker_threads); i++) + { + w = vlib_worker_threads + i; + u8 *line = NULL; + + line = format (line, "%-7d%-20s%-12s%-8d", + i, + w->name ? w->name : (u8 *) "", + w->registration ? w->registration->name : "", w->lwp); + + line = format (line, "%-25U", format_sched_policy_and_priority, w->lwp); + + int lcore = -1; + cpu_set_t cpuset; + CPU_ZERO (&cpuset); + int ret = -1; + + ret = + pthread_getaffinity_np (w->thread_id, sizeof (cpu_set_t), &cpuset); + if (!ret) + { + int c; + for (c = 0; c < CPU_SETSIZE; c++) + if (CPU_ISSET (c, &cpuset)) + { + if (lcore > -1) + { + lcore = -2; + break; + } + lcore = c; + } + } + else + { + lcore = w->lcore_id; + } + + if (lcore > -1) + { + const char *sys_cpu_path = "/sys/devices/system/cpu/cpu"; + int socket_id = -1; + int core_id = -1; + u8 *p = 0; + + p = format (p, "%s%u/topology/core_id%c", sys_cpu_path, lcore, 0); + vlib_sysfs_read ((char *) p, "%d", &core_id); + + vec_reset_length (p); + p = + format (p, + "%s%u/topology/physical_package_id%c", + sys_cpu_path, lcore, 0); + vlib_sysfs_read ((char *) p, "%d", &socket_id); + vec_free (p); + + line = format (line, "%-7u%-7u%-7u%", lcore, core_id, socket_id); +#if DPDK==1 + ASSERT (lcore <= RTE_MAX_LCORE); + switch (lcore_config[lcore].state) + { + case WAIT: + line = format (line, "wait"); + break; + case RUNNING: + line = format (line, "running"); + break; + case FINISHED: + line = format (line, "finished"); + break; + default: + line = format (line, "unknown"); + } +#endif + } + else + { + line = + format (line, "%-7s%-7s%-7s%", (lcore == -2) ? "M" : "n/a", "n/a", + "n/a"); + } + + vlib_cli_output (vm, "%v", line); + vec_free (line); + } +#endif + + return 0; +} + + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (show_threads_command, static) = { + .path = "show threads", + .short_help = "Show threads", + .function = show_threads_fn, +}; +/* *INDENT-ON* */ + +/* + * Trigger threads to grab frame queue trace data + */ +static clib_error_t * +trace_frame_queue (vlib_main_t * vm, unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + unformat_input_t _line_input, *line_input = &_line_input; + clib_error_t *error = NULL; + frame_queue_trace_t *fqt; + frame_queue_nelt_counter_t *fqh; + vlib_thread_main_t *tm = vlib_get_thread_main (); + vlib_frame_queue_main_t *fqm; + u32 num_fq; + u32 fqix; + u32 enable = 2; + u32 index = ~(u32) 0; + + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "on")) + enable = 1; + else if (unformat (line_input, "off")) + enable = 0; + else if (unformat (line_input, "index %u"), &index) + ; + else + return clib_error_return (0, "parse error: '%U'", + format_unformat_error, line_input); + } + + unformat_free (line_input); + + if (enable > 1) + return clib_error_return (0, "expecting on or off"); + + if (vec_len (tm->frame_queue_mains) == 0) + return clib_error_return (0, "no worker handoffs exist"); + + if (index > vec_len (tm->frame_queue_mains) - 1) + return clib_error_return (0, + "expecting valid worker handoff queue index"); + + fqm = vec_elt_at_index (tm->frame_queue_mains, index); + + num_fq = vec_len (fqm->vlib_frame_queues); + if (num_fq == 0) + { + vlib_cli_output (vm, "No frame queues exist\n"); + return error; + } + + // Allocate storage for trace if necessary + vec_validate_aligned (fqm->frame_queue_traces, num_fq - 1, + CLIB_CACHE_LINE_BYTES); + vec_validate_aligned (fqm->frame_queue_histogram, num_fq - 1, + CLIB_CACHE_LINE_BYTES); + + for (fqix = 0; fqix < num_fq; fqix++) + { + fqt = &fqm->frame_queue_traces[fqix]; + fqh = &fqm->frame_queue_histogram[fqix]; + + memset (fqt->n_vectors, 0xff, sizeof (fqt->n_vectors)); + fqt->written = 0; + memset (fqh, 0, sizeof (*fqh)); + fqm->vlib_frame_queues[fqix]->trace = enable; + } + return error; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (cmd_trace_frame_queue,static) = { + .path = "trace frame-queue", + .short_help = "trace frame-queue (on|off)", + .function = trace_frame_queue, + .is_mp_safe = 1, +}; +/* *INDENT-ON* */ + + +/* + * Adding two counters and compute percent of total + * Round up, e.g. 0.000001 => 1% + */ +static u32 +compute_percent (u64 * two_counters, u64 total) +{ + if (total == 0) + { + return 0; + } + else + { + return (((two_counters[0] + two_counters[1]) * 100) + + (total - 1)) / total; + } +} + +/* + * Display frame queue trace data gathered by threads. + */ +static clib_error_t * +show_frame_queue_internal (vlib_main_t * vm, + vlib_frame_queue_main_t * fqm, u32 histogram) +{ + clib_error_t *error = NULL; + frame_queue_trace_t *fqt; + frame_queue_nelt_counter_t *fqh; + u32 num_fq; + u32 fqix; + + num_fq = vec_len (fqm->frame_queue_traces); + if (num_fq == 0) + { + vlib_cli_output (vm, "No trace data for frame queues\n"); + return error; + } + + if (histogram) + { + vlib_cli_output (vm, "0-1 2-3 4-5 6-7 8-9 10-11 12-13 14-15 " + "16-17 18-19 20-21 22-23 24-25 26-27 28-29 30-31\n"); + } + + for (fqix = 0; fqix < num_fq; fqix++) + { + fqt = &(fqm->frame_queue_traces[fqix]); + + vlib_cli_output (vm, "Thread %d %v\n", fqix, + vlib_worker_threads[fqix].name); + + if (fqt->written == 0) + { + vlib_cli_output (vm, " no trace data\n"); + continue; + } + + if (histogram) + { + fqh = &(fqm->frame_queue_histogram[fqix]); + u32 nelt; + u64 total = 0; + + for (nelt = 0; nelt < FRAME_QUEUE_MAX_NELTS; nelt++) + { + total += fqh->count[nelt]; + } + + /* + * Print in pairs to condense the output. + * Allow entries with 0 counts to be clearly identified, by rounding up. + * Any non-zero value will be displayed as at least one percent. This + * also means the sum of percentages can be > 100, but that is fine. The + * histogram is counted from the last time "trace frame on" was issued. + */ + vlib_cli_output (vm, + "%3d%% %3d%% %3d%% %3d%% %3d%% %3d%% %3d%% %3d%% " + "%3d%% %3d%% %3d%% %3d%% %3d%% %3d%% %3d%% %3d%%\n", + compute_percent (&fqh->count[0], total), + compute_percent (&fqh->count[2], total), + compute_percent (&fqh->count[4], total), + compute_percent (&fqh->count[6], total), + compute_percent (&fqh->count[8], total), + compute_percent (&fqh->count[10], total), + compute_percent (&fqh->count[12], total), + compute_percent (&fqh->count[14], total), + compute_percent (&fqh->count[16], total), + compute_percent (&fqh->count[18], total), + compute_percent (&fqh->count[20], total), + compute_percent (&fqh->count[22], total), + compute_percent (&fqh->count[24], total), + compute_percent (&fqh->count[26], total), + compute_percent (&fqh->count[28], total), + compute_percent (&fqh->count[30], total)); + } + else + { + vlib_cli_output (vm, + " vector-threshold %d ring size %d in use %d\n", + fqt->threshold, fqt->nelts, fqt->n_in_use); + vlib_cli_output (vm, " head %12d head_hint %12d tail %12d\n", + fqt->head, fqt->head_hint, fqt->tail); + vlib_cli_output (vm, + " %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d\n", + fqt->n_vectors[0], fqt->n_vectors[1], + fqt->n_vectors[2], fqt->n_vectors[3], + fqt->n_vectors[4], fqt->n_vectors[5], + fqt->n_vectors[6], fqt->n_vectors[7], + fqt->n_vectors[8], fqt->n_vectors[9], + fqt->n_vectors[10], fqt->n_vectors[11], + fqt->n_vectors[12], fqt->n_vectors[13], + fqt->n_vectors[14], fqt->n_vectors[15]); + + if (fqt->nelts > 16) + { + vlib_cli_output (vm, + " %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d %3d\n", + fqt->n_vectors[16], fqt->n_vectors[17], + fqt->n_vectors[18], fqt->n_vectors[19], + fqt->n_vectors[20], fqt->n_vectors[21], + fqt->n_vectors[22], fqt->n_vectors[23], + fqt->n_vectors[24], fqt->n_vectors[25], + fqt->n_vectors[26], fqt->n_vectors[27], + fqt->n_vectors[28], fqt->n_vectors[29], + fqt->n_vectors[30], fqt->n_vectors[31]); + } + } + + } + return error; +} + +static clib_error_t * +show_frame_queue_trace (vlib_main_t * vm, unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + vlib_thread_main_t *tm = vlib_get_thread_main (); + vlib_frame_queue_main_t *fqm; + clib_error_t *error; + + vec_foreach (fqm, tm->frame_queue_mains) + { + vlib_cli_output (vm, "Worker handoff queue index %u (next node '%U'):", + fqm - tm->frame_queue_mains, + format_vlib_node_name, vm, fqm->node_index); + error = show_frame_queue_internal (vm, fqm, 0); + if (error) + return error; + } + return 0; +} + +static clib_error_t * +show_frame_queue_histogram (vlib_main_t * vm, unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + vlib_thread_main_t *tm = vlib_get_thread_main (); + vlib_frame_queue_main_t *fqm; + clib_error_t *error; + + vec_foreach (fqm, tm->frame_queue_mains) + { + vlib_cli_output (vm, "Worker handoff queue index %u (next node '%U'):", + fqm - tm->frame_queue_mains, + format_vlib_node_name, vm, fqm->node_index); + error = show_frame_queue_internal (vm, fqm, 1); + if (error) + return error; + } + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (cmd_show_frame_queue_trace,static) = { + .path = "show frame-queue", + .short_help = "show frame-queue trace", + .function = show_frame_queue_trace, +}; +/* *INDENT-ON* */ + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (cmd_show_frame_queue_histogram,static) = { + .path = "show frame-queue histogram", + .short_help = "show frame-queue histogram", + .function = show_frame_queue_histogram, +}; +/* *INDENT-ON* */ + + +/* + * Modify the number of elements on the frame_queues + */ +static clib_error_t * +test_frame_queue_nelts (vlib_main_t * vm, unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + unformat_input_t _line_input, *line_input = &_line_input; + vlib_thread_main_t *tm = vlib_get_thread_main (); + vlib_frame_queue_main_t *fqm; + clib_error_t *error = NULL; + u32 num_fq; + u32 fqix; + u32 nelts = 0; + u32 index = ~(u32) 0; + + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "nelts %u", &nelts)) + ; + else if (unformat (line_input, "index %u", &index)) + ; + else + return clib_error_return (0, "parse error: '%U'", + format_unformat_error, line_input); + } + + unformat_free (line_input); + + if (index > vec_len (tm->frame_queue_mains) - 1) + return clib_error_return (0, + "expecting valid worker handoff queue index"); + + fqm = vec_elt_at_index (tm->frame_queue_mains, index); + + if ((nelts != 4) && (nelts != 8) && (nelts != 16) && (nelts != 32)) + { + return clib_error_return (0, "expecting 4,8,16,32"); + } + + num_fq = vec_len (fqm->vlib_frame_queues); + if (num_fq == 0) + { + vlib_cli_output (vm, "No frame queues exist\n"); + return error; + } + + for (fqix = 0; fqix < num_fq; fqix++) + { + fqm->vlib_frame_queues[fqix]->nelts = nelts; + } + + return error; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (cmd_test_frame_queue_nelts,static) = { + .path = "test frame-queue nelts", + .short_help = "test frame-queue nelts (4,8,16,32)", + .function = test_frame_queue_nelts, +}; +/* *INDENT-ON* */ + + +/* + * Modify the max number of packets pulled off the frame queues + */ +static clib_error_t * +test_frame_queue_threshold (vlib_main_t * vm, unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + unformat_input_t _line_input, *line_input = &_line_input; + vlib_thread_main_t *tm = vlib_get_thread_main (); + vlib_frame_queue_main_t *fqm; + clib_error_t *error = NULL; + u32 num_fq; + u32 fqix; + u32 threshold = ~(u32) 0; + u32 index = ~(u32) 0; + + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "threshold %u", &threshold)) + ; + else if (unformat (line_input, "index %u", &index)) + ; + else + return clib_error_return (0, "parse error: '%U'", + format_unformat_error, line_input); + } + + unformat_free (line_input); + + if (index > vec_len (tm->frame_queue_mains) - 1) + return clib_error_return (0, + "expecting valid worker handoff queue index"); + + fqm = vec_elt_at_index (tm->frame_queue_mains, index); + + + if (threshold == ~(u32) 0) + { + vlib_cli_output (vm, "expecting threshold value\n"); + return error; + } + + if (threshold == 0) + threshold = ~0; + + num_fq = vec_len (fqm->vlib_frame_queues); + if (num_fq == 0) + { + vlib_cli_output (vm, "No frame queues exist\n"); + return error; + } + + for (fqix = 0; fqix < num_fq; fqix++) + { + fqm->vlib_frame_queues[fqix]->vector_threshold = threshold; + } + + return error; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (cmd_test_frame_queue_threshold,static) = { + .path = "test frame-queue threshold", + .short_help = "test frame-queue threshold N (0=no limit)", + .function = test_frame_queue_threshold, +}; +/* *INDENT-ON* */ + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ -- cgit 1.2.3-korg