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Diffstat (limited to 'collectors/proc.plugin/proc_pressure.c')
-rw-r--r--collectors/proc.plugin/proc_pressure.c257
1 files changed, 0 insertions, 257 deletions
diff --git a/collectors/proc.plugin/proc_pressure.c b/collectors/proc.plugin/proc_pressure.c
deleted file mode 100644
index 4037e60ac..000000000
--- a/collectors/proc.plugin/proc_pressure.c
+++ /dev/null
@@ -1,257 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#include "plugin_proc.h"
-
-#define PLUGIN_PROC_MODULE_PRESSURE_NAME "/proc/pressure"
-#define CONFIG_SECTION_PLUGIN_PROC_PRESSURE "plugin:" PLUGIN_PROC_CONFIG_NAME ":" PLUGIN_PROC_MODULE_PRESSURE_NAME
-
-// linux calculates this every 2 seconds, see kernel/sched/psi.c PSI_FREQ
-#define MIN_PRESSURE_UPDATE_EVERY 2
-
-static int pressure_update_every = 0;
-
-static struct pressure resources[PRESSURE_NUM_RESOURCES] = {
- {
- .some = {
- .available = true,
- .share_time = {.id = "cpu_some_pressure", .title = "CPU some pressure"},
- .total_time = {.id = "cpu_some_pressure_stall_time", .title = "CPU some pressure stall time"}
- },
- .full = {
- // Disable CPU full pressure.
- // See https://github.com/torvalds/linux/commit/890d550d7dbac7a31ecaa78732aa22be282bb6b8
- .available = false,
- .share_time = {.id = "cpu_full_pressure", .title = "CPU full pressure"},
- .total_time = {.id = "cpu_full_pressure_stall_time", .title = "CPU full pressure stall time"}
- },
- },
- {
- .some = {
- .available = true,
- .share_time = {.id = "memory_some_pressure", .title = "Memory some pressure"},
- .total_time = {.id = "memory_some_pressure_stall_time", .title = "Memory some pressure stall time"}
- },
- .full = {
- .available = true,
- .share_time = {.id = "memory_full_pressure", .title = "Memory full pressure"},
- .total_time = {.id = "memory_full_pressure_stall_time", .title = "Memory full pressure stall time"}
- },
- },
- {
- .some = {
- .available = true,
- .share_time = {.id = "io_some_pressure", .title = "I/O some pressure"},
- .total_time = {.id = "io_some_pressure_stall_time", .title = "I/O some pressure stall time"}
- },
- .full = {
- .available = true,
- .share_time = {.id = "io_full_pressure", .title = "I/O full pressure"},
- .total_time = {.id = "io_full_pressure_stall_time", .title = "I/O full pressure stall time"}
- },
- },
- {
- .some = {
- // this is not available
- .available = false,
- .share_time = {.id = "irq_some_pressure", .title = "IRQ some pressure"},
- .total_time = {.id = "irq_some_pressure_stall_time", .title = "IRQ some pressure stall time"}
- },
- .full = {
- .available = true,
- .share_time = {.id = "irq_full_pressure", .title = "IRQ full pressure"},
- .total_time = {.id = "irq_full_pressure_stall_time", .title = "IRQ full pressure stall time"}
- },
- },
-};
-
-static struct resource_info {
- procfile *pf;
- const char *name; // metric file name
- const char *family; // webui section name
- int section_priority;
-} resource_info[PRESSURE_NUM_RESOURCES] = {
- { .name = "cpu", .family = "cpu", .section_priority = NETDATA_CHART_PRIO_SYSTEM_CPU },
- { .name = "memory", .family = "ram", .section_priority = NETDATA_CHART_PRIO_SYSTEM_RAM },
- { .name = "io", .family = "disk", .section_priority = NETDATA_CHART_PRIO_SYSTEM_IO },
- { .name = "irq", .family = "interrupts", .section_priority = NETDATA_CHART_PRIO_SYSTEM_INTERRUPTS },
-};
-
-void update_pressure_charts(struct pressure_charts *pcs) {
- if (pcs->share_time.st) {
- rrddim_set_by_pointer(
- pcs->share_time.st, pcs->share_time.rd10, (collected_number)(pcs->share_time.value10 * 100));
- rrddim_set_by_pointer(
- pcs->share_time.st, pcs->share_time.rd60, (collected_number)(pcs->share_time.value60 * 100));
- rrddim_set_by_pointer(
- pcs->share_time.st, pcs->share_time.rd300, (collected_number)(pcs->share_time.value300 * 100));
- rrdset_done(pcs->share_time.st);
- }
- if (pcs->total_time.st) {
- rrddim_set_by_pointer(
- pcs->total_time.st, pcs->total_time.rdtotal, (collected_number)(pcs->total_time.value_total));
- rrdset_done(pcs->total_time.st);
- }
-}
-
-static void proc_pressure_do_resource(procfile *ff, int res_idx, size_t line, bool some) {
- struct pressure_charts *pcs;
- struct resource_info ri;
- pcs = some ? &resources[res_idx].some : &resources[res_idx].full;
- ri = resource_info[res_idx];
-
- if (unlikely(!pcs->share_time.st)) {
- pcs->share_time.st = rrdset_create_localhost(
- "system",
- pcs->share_time.id,
- NULL,
- ri.family,
- NULL,
- pcs->share_time.title,
- "percentage",
- PLUGIN_PROC_NAME,
- PLUGIN_PROC_MODULE_PRESSURE_NAME,
- ri.section_priority + (some ? 40 : 50),
- pressure_update_every,
- RRDSET_TYPE_LINE);
- pcs->share_time.rd10 =
- rrddim_add(pcs->share_time.st, some ? "some 10" : "full 10", NULL, 1, 100, RRD_ALGORITHM_ABSOLUTE);
- pcs->share_time.rd60 =
- rrddim_add(pcs->share_time.st, some ? "some 60" : "full 60", NULL, 1, 100, RRD_ALGORITHM_ABSOLUTE);
- pcs->share_time.rd300 =
- rrddim_add(pcs->share_time.st, some ? "some 300" : "full 300", NULL, 1, 100, RRD_ALGORITHM_ABSOLUTE);
- }
-
- pcs->share_time.value10 = strtod(procfile_lineword(ff, line, 2), NULL);
- pcs->share_time.value60 = strtod(procfile_lineword(ff, line, 4), NULL);
- pcs->share_time.value300 = strtod(procfile_lineword(ff, line, 6), NULL);
-
- if (unlikely(!pcs->total_time.st)) {
- pcs->total_time.st = rrdset_create_localhost(
- "system",
- pcs->total_time.id,
- NULL,
- ri.family,
- NULL,
- pcs->total_time.title,
- "ms",
- PLUGIN_PROC_NAME,
- PLUGIN_PROC_MODULE_PRESSURE_NAME,
- ri.section_priority + (some ? 45 : 55),
- pressure_update_every,
- RRDSET_TYPE_LINE);
- pcs->total_time.rdtotal = rrddim_add(pcs->total_time.st, "time", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
- }
-
- pcs->total_time.value_total = str2ull(procfile_lineword(ff, line, 8), NULL) / 1000;
-}
-
-static void proc_pressure_do_resource_some(procfile *ff, int res_idx, size_t line) {
- proc_pressure_do_resource(ff, res_idx, line, true);
-}
-
-static void proc_pressure_do_resource_full(procfile *ff, int res_idx, size_t line) {
- proc_pressure_do_resource(ff, res_idx, line, false);
-}
-
-int do_proc_pressure(int update_every, usec_t dt) {
- int ok_count = 0;
- int i;
-
- static usec_t next_pressure_dt = 0;
- static char *base_path = NULL;
-
- update_every = (update_every < MIN_PRESSURE_UPDATE_EVERY) ? MIN_PRESSURE_UPDATE_EVERY : update_every;
- pressure_update_every = update_every;
-
- if (next_pressure_dt <= dt) {
- next_pressure_dt = update_every * USEC_PER_SEC;
- } else {
- next_pressure_dt -= dt;
- return 0;
- }
-
- if (unlikely(!base_path)) {
- base_path = config_get(CONFIG_SECTION_PLUGIN_PROC_PRESSURE, "base path of pressure metrics", "/proc/pressure");
- }
-
- for (i = 0; i < PRESSURE_NUM_RESOURCES; i++) {
- procfile *ff = resource_info[i].pf;
- int do_some = resources[i].some.enabled, do_full = resources[i].full.enabled;
-
- if (!resources[i].some.available && !resources[i].full.available)
- continue;
-
- if (unlikely(!ff)) {
- char filename[FILENAME_MAX + 1];
- char config_key[CONFIG_MAX_NAME + 1];
-
- snprintfz(filename
- , FILENAME_MAX
- , "%s%s/%s"
- , netdata_configured_host_prefix
- , base_path
- , resource_info[i].name);
-
- do_some = resources[i].some.available ? CONFIG_BOOLEAN_YES : CONFIG_BOOLEAN_NO;
- do_full = resources[i].full.available ? CONFIG_BOOLEAN_YES : CONFIG_BOOLEAN_NO;
-
- snprintfz(config_key, CONFIG_MAX_NAME, "enable %s some pressure", resource_info[i].name);
- do_some = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_PRESSURE, config_key, do_some);
- resources[i].some.enabled = do_some;
-
- snprintfz(config_key, CONFIG_MAX_NAME, "enable %s full pressure", resource_info[i].name);
- do_full = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_PRESSURE, config_key, do_full);
- resources[i].full.enabled = do_full;
-
- if (!do_full && !do_some) {
- resources[i].some.available = false;
- resources[i].full.available = false;
- continue;
- }
-
- ff = procfile_open(filename, " =", PROCFILE_FLAG_NO_ERROR_ON_FILE_IO);
- if (unlikely(!ff)) {
- // PSI IRQ was added recently (https://github.com/torvalds/linux/commit/52b1364ba0b105122d6de0e719b36db705011ac1)
- if (strcmp(resource_info[i].name, "irq") != 0)
- collector_error("Cannot read pressure information from %s.", filename);
- resources[i].some.available = false;
- resources[i].full.available = false;
- continue;
- }
- }
-
- ff = procfile_readall(ff);
- resource_info[i].pf = ff;
- if (unlikely(!ff))
- continue;
-
- size_t lines = procfile_lines(ff);
- if (unlikely(lines < 1)) {
- collector_error("%s has no lines.", procfile_filename(ff));
- continue;
- }
-
- for(size_t l = 0; l < lines ;l++) {
- const char *key = procfile_lineword(ff, l, 0);
- if(strcmp(key, "some") == 0) {
- if(do_some) {
- proc_pressure_do_resource_some(ff, i, l);
- update_pressure_charts(&resources[i].some);
- ok_count++;
- }
- }
- else if(strcmp(key, "full") == 0) {
- if(do_full) {
- proc_pressure_do_resource_full(ff, i, l);
- update_pressure_charts(&resources[i].full);
- ok_count++;
- }
- }
- }
- }
-
- if(!ok_count)
- return 1;
-
- return 0;
-}
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