+ dstat = devstat_data + sizeof(long); // skip generation number
+
+ for (i = 0; i < numdevs; i++) {
+ if (likely(do_system_io)) {
+ if (((dstat[i].device_type & DEVSTAT_TYPE_MASK) == DEVSTAT_TYPE_DIRECT) || ((dstat[i].device_type & DEVSTAT_TYPE_MASK) == DEVSTAT_TYPE_STORARRAY)) {
+ total_disk_kbytes_read += dstat[i].bytes[DEVSTAT_READ] / KILO_FACTOR;
+ total_disk_kbytes_write += dstat[i].bytes[DEVSTAT_WRITE] / KILO_FACTOR;
+ }
+ }
+
+ if (unlikely(!enable_pass_devices))
+ if ((dstat[i].device_type & DEVSTAT_TYPE_PASS) == DEVSTAT_TYPE_PASS)
+ continue;
+
+ if (((dstat[i].device_type & DEVSTAT_TYPE_MASK) == DEVSTAT_TYPE_DIRECT) || ((dstat[i].device_type & DEVSTAT_TYPE_MASK) == DEVSTAT_TYPE_STORARRAY)) {
+ char disk[DEVSTAT_NAME_LEN + MAX_INT_DIGITS + 1];
+ int def_io, def_ops, def_qops, def_util, def_iotime, def_await, def_avagsz, def_svctm,
+ iter_io, iter_ops, iter_qops, iter_util, iter_iotime, iter_await, iter_avagsz, iter_svctm;
+ struct cur_dstat {
+ collected_number duration_read_ms;
+ collected_number duration_write_ms;
+ collected_number busy_time_ms;
+ } cur_dstat;
+
+ sprintf(disk, "%s%d", dstat[i].device_name, dstat[i].unit_number);
+
+ struct disks_metadata *dm = dictionary_get(disks, disk);
+ if(unlikely(!dm)) {
+ char var_name[4096 + 1];
+ snprintfz(var_name, 4096, "%s:%s", CONFIG_SECTION_KERN_DEVSTAT, disk);
+
+ def_io = do_io;
+ def_ops = do_ops;
+ def_qops = do_qops;
+ def_util = do_util;
+ def_iotime = do_iotime;
+ def_await = do_await;
+ def_avagsz = do_avagsz;
+ def_svctm = do_svctm;
+
+ if(unlikely(simple_pattern_matches(excluded_disks, disk))) {
+ def_io = CONFIG_BOOLEAN_NO;
+ def_ops = CONFIG_BOOLEAN_NO;
+ def_qops = CONFIG_BOOLEAN_NO;
+ def_util = CONFIG_BOOLEAN_NO;
+ def_iotime = CONFIG_BOOLEAN_NO;
+ def_await = CONFIG_BOOLEAN_NO;
+ def_avagsz = CONFIG_BOOLEAN_NO;
+ def_svctm = CONFIG_BOOLEAN_NO;
+ }
+
+ iter_io = config_get_boolean_ondemand(var_name, "bandwidth", def_io);
+ iter_ops = config_get_boolean_ondemand(var_name, "operations", def_ops);
+ iter_qops = config_get_boolean_ondemand(var_name, "queued operations", def_qops);
+ iter_util = config_get_boolean_ondemand(var_name, "utilization percentage", def_util);
+ iter_iotime = config_get_boolean_ondemand(var_name, "i/o time", def_iotime);
+ iter_await = config_get_boolean_ondemand(var_name, "average completed i/o time", def_await);
+ iter_avagsz = config_get_boolean_ondemand(var_name, "average completed i/o bandwidth",
+ def_avagsz);
+ iter_svctm = config_get_boolean_ondemand(var_name, "average service time", def_svctm);
+
+ struct disks_metadata dmp = {
+ .do_io = iter_io,
+ .do_ops = iter_ops,
+ .do_qops = iter_qops,
+ .do_util = iter_util,
+ .do_iotime = iter_iotime,
+ .do_await = iter_await,
+ .do_avagsz = iter_avagsz,
+ .do_svctm = iter_svctm,
+
+ // initialise data for differential charts
+
+ .prev_dstat.bytes_read = dstat[i].bytes[DEVSTAT_READ],
+ .prev_dstat.bytes_write = dstat[i].bytes[DEVSTAT_WRITE],
+ .prev_dstat.operations_read = dstat[i].operations[DEVSTAT_READ],
+ .prev_dstat.operations_write = dstat[i].operations[DEVSTAT_WRITE],
+ .prev_dstat.duration_read_ms = dstat[i].duration[DEVSTAT_READ].sec * 1000
+ + dstat[i].duration[DEVSTAT_READ].frac * BINTIME_SCALE,
+ .prev_dstat.duration_write_ms = dstat[i].duration[DEVSTAT_WRITE].sec * 1000
+ + dstat[i].duration[DEVSTAT_READ].frac * BINTIME_SCALE,
+ .prev_dstat.busy_time_ms = dstat[i].busy_time.sec * 1000
+ + dstat[i].busy_time.frac * BINTIME_SCALE,
+
+ .st_io = NULL,
+ .rd_io_in = NULL,
+ .rd_io_out = NULL,
+
+ .st_ops = NULL,
+ .rd_ops_in = NULL,
+ .rd_ops_out = NULL,
+
+ .st_qops = NULL,
+ .rd_qops = NULL,
+
+ .st_util = NULL,
+ .rd_util = NULL,
+
+ .st_iotime = NULL,
+ .rd_iotime_in = NULL,
+ .rd_iotime_out = NULL,
+
+ .st_await = NULL,
+ .rd_await_in = NULL,
+ .rd_await_out = NULL,
+
+ .st_avagsz = NULL,
+ .rd_avagsz_in = NULL,
+ .rd_avagsz_out = NULL,
+
+ .st_svctm = NULL,
+ .rd_svctm = NULL,
+ };
+
+ dm = dictionary_set(disks, disk, &dmp, sizeof(struct disks_metadata));
+ }
+
+ cur_dstat.duration_read_ms = dstat[i].duration[DEVSTAT_READ].sec * 1000
+ + dstat[i].duration[DEVSTAT_READ].frac * BINTIME_SCALE;
+ cur_dstat.duration_write_ms = dstat[i].duration[DEVSTAT_WRITE].sec * 1000
+ + dstat[i].duration[DEVSTAT_READ].frac * BINTIME_SCALE;
+ cur_dstat.busy_time_ms = dstat[i].busy_time.sec * 1000 + dstat[i].busy_time.frac * BINTIME_SCALE;
+
+ // --------------------------------------------------------------------
+
+ if(dm->do_io == CONFIG_BOOLEAN_YES || (dm->do_io == CONFIG_BOOLEAN_AUTO &&
+ (dstat[i].bytes[DEVSTAT_READ] || dstat[i].bytes[DEVSTAT_WRITE]))) {
+ if (unlikely(!dm->st_io)) {
+ dm->st_io = rrdset_create_localhost("disk",
+ disk,
+ NULL,
+ disk,
+ "disk.io",
+ "Disk I/O Bandwidth",
+ "kilobytes/s",
+ 2000,
+ update_every,
+ RRDSET_TYPE_AREA
+ );
+
+ dm->rd_io_in = rrddim_add(dm->st_io, "reads", NULL, 1, KILO_FACTOR,
+ RRD_ALGORITHM_INCREMENTAL);
+ dm->rd_io_out = rrddim_add(dm->st_io, "writes", NULL, -1, KILO_FACTOR,
+ RRD_ALGORITHM_INCREMENTAL);
+ } else
+ rrdset_next(dm->st_io);
+
+ rrddim_set_by_pointer(dm->st_io, dm->rd_io_in, dstat[i].bytes[DEVSTAT_READ]);
+ rrddim_set_by_pointer(dm->st_io, dm->rd_io_out, dstat[i].bytes[DEVSTAT_WRITE]);
+ rrdset_done(dm->st_io);
+ }
+
+ // --------------------------------------------------------------------
+
+ if(dm->do_ops == CONFIG_BOOLEAN_YES || (dm->do_ops == CONFIG_BOOLEAN_AUTO &&
+ (dstat[i].operations[DEVSTAT_READ] || dstat[i].operations[DEVSTAT_WRITE]))) {
+ if (unlikely(!dm->st_ops)) {
+ dm->st_ops = rrdset_create_localhost("disk_ops",
+ disk,
+ NULL,
+ disk,
+ "disk.ops",
+ "Disk Completed I/O Operations",
+ "operations/s",
+ 2001,
+ update_every,
+ RRDSET_TYPE_LINE
+ );
+
+ rrdset_flag_set(dm->st_ops, RRDSET_FLAG_DETAIL);
+
+ dm->rd_ops_in = rrddim_add(dm->st_ops, "reads", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+ dm->rd_ops_out = rrddim_add(dm->st_ops, "writes", NULL, -1, 1,
+ RRD_ALGORITHM_INCREMENTAL);
+ } else
+ rrdset_next(dm->st_ops);
+
+ rrddim_set_by_pointer(dm->st_ops, dm->rd_ops_in, dstat[i].operations[DEVSTAT_READ]);
+ rrddim_set_by_pointer(dm->st_ops, dm->rd_ops_out, dstat[i].operations[DEVSTAT_WRITE]);
+ rrdset_done(dm->st_ops);
+ }
+
+ // --------------------------------------------------------------------
+
+ if(dm->do_qops == CONFIG_BOOLEAN_YES || (dm->do_qops == CONFIG_BOOLEAN_AUTO &&
+ (dstat[i].start_count || dstat[i].end_count))) {
+ if (unlikely(!dm->st_qops)) {
+ dm->st_qops = rrdset_create_localhost("disk_qops",
+ disk,
+ NULL,
+ disk,
+ "disk.qops",
+ "Disk Current I/O Operations",
+ "operations",
+ 2002,
+ update_every,
+ RRDSET_TYPE_LINE
+ );
+
+ rrdset_flag_set(dm->st_qops, RRDSET_FLAG_DETAIL);
+
+ dm->rd_qops = rrddim_add(dm->st_qops, "operations", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+ } else
+ rrdset_next(dm->st_qops);
+
+ rrddim_set_by_pointer(dm->st_qops, dm->rd_qops, dstat[i].start_count - dstat[i].end_count);
+ rrdset_done(dm->st_qops);
+ }
+
+ // --------------------------------------------------------------------
+
+ if(dm->do_util == CONFIG_BOOLEAN_YES || (dm->do_util == CONFIG_BOOLEAN_AUTO &&
+ cur_dstat.busy_time_ms)) {
+ if (unlikely(!dm->st_util)) {
+ dm->st_util = rrdset_create_localhost("disk_util",
+ disk,
+ NULL,
+ disk,
+ "disk.util",
+ "Disk Utilization Time",
+ "% of time working",
+ 2004,
+ update_every,
+ RRDSET_TYPE_AREA
+ );
+
+ rrdset_flag_set(dm->st_util, RRDSET_FLAG_DETAIL);
+
+ dm->rd_util = rrddim_add(dm->st_util, "utilization", NULL, 1, 10,
+ RRD_ALGORITHM_INCREMENTAL);
+ } else
+ rrdset_next(dm->st_util);
+
+ rrddim_set_by_pointer(dm->st_util, dm->rd_util, cur_dstat.busy_time_ms);
+ rrdset_done(dm->st_util);
+ }
+
+ // --------------------------------------------------------------------
+
+ if(dm->do_iotime == CONFIG_BOOLEAN_YES || (dm->do_iotime == CONFIG_BOOLEAN_AUTO &&
+ (cur_dstat.duration_read_ms || cur_dstat.duration_write_ms))) {
+ if (unlikely(!dm->st_iotime)) {
+ dm->st_iotime = rrdset_create_localhost("disk_iotime",
+ disk,
+ NULL,
+ disk,
+ "disk.iotime",
+ "Disk Total I/O Time",
+ "milliseconds/s",
+ 2022,
+ update_every,
+ RRDSET_TYPE_LINE
+ );
+
+ rrdset_flag_set(dm->st_iotime, RRDSET_FLAG_DETAIL);
+
+ dm->rd_iotime_in = rrddim_add(dm->st_iotime, "reads", NULL, 1, 1,
+ RRD_ALGORITHM_INCREMENTAL);
+ dm->rd_iotime_out = rrddim_add(dm->st_iotime, "writes", NULL, -1, 1,
+ RRD_ALGORITHM_INCREMENTAL);
+ } else
+ rrdset_next(dm->st_iotime);
+
+ rrddim_set_by_pointer(dm->st_iotime, dm->rd_iotime_in, cur_dstat.duration_read_ms);
+ rrddim_set_by_pointer(dm->st_iotime, dm->rd_iotime_out, cur_dstat.duration_write_ms);
+ rrdset_done(dm->st_iotime);
+ }
+
+ // --------------------------------------------------------------------
+ // calculate differential charts
+ // only if this is not the first time we run
+
+ if (likely(dt)) {
+
+ // --------------------------------------------------------------------
+
+ if(dm->do_await == CONFIG_BOOLEAN_YES || (dm->do_await == CONFIG_BOOLEAN_AUTO &&
+ (dstat[i].operations[DEVSTAT_READ] || dstat[i].operations[DEVSTAT_WRITE]))) {
+ if (unlikely(!dm->st_await)) {
+ dm->st_await = rrdset_create_localhost("disk_await",
+ disk,
+ NULL,
+ disk,
+ "disk.await",
+ "Average Completed I/O Operation Time",
+ "ms per operation",
+ 2005,
+ update_every,
+ RRDSET_TYPE_LINE
+ );
+
+ rrdset_flag_set(dm->st_await, RRDSET_FLAG_DETAIL);
+
+ dm->rd_await_in = rrddim_add(dm->st_await, "reads", NULL, 1, 1,
+ RRD_ALGORITHM_ABSOLUTE);
+ dm->rd_await_out = rrddim_add(dm->st_await, "writes", NULL, -1, 1,
+ RRD_ALGORITHM_ABSOLUTE);
+ } else
+ rrdset_next(dm->st_await);
+
+ rrddim_set_by_pointer(dm->st_await, dm->rd_await_in,
+ (dstat[i].operations[DEVSTAT_READ] -
+ dm->prev_dstat.operations_read) ?
+ (cur_dstat.duration_read_ms - dm->prev_dstat.duration_read_ms) /
+ (dstat[i].operations[DEVSTAT_READ] -
+ dm->prev_dstat.operations_read) :
+ 0);
+ rrddim_set_by_pointer(dm->st_await, dm->rd_await_out,
+ (dstat[i].operations[DEVSTAT_WRITE] -
+ dm->prev_dstat.operations_write) ?
+ (cur_dstat.duration_write_ms - dm->prev_dstat.duration_write_ms) /
+ (dstat[i].operations[DEVSTAT_WRITE] -
+ dm->prev_dstat.operations_write) :
+ 0);
+ rrdset_done(dm->st_await);
+ }
+
+ // --------------------------------------------------------------------
+
+ if(dm->do_avagsz == CONFIG_BOOLEAN_YES || (dm->do_avagsz == CONFIG_BOOLEAN_AUTO &&
+ (dstat[i].operations[DEVSTAT_READ] || dstat[i].operations[DEVSTAT_WRITE]))) {
+ if (unlikely(!dm->st_avagsz)) {
+ dm->st_avagsz = rrdset_create_localhost("disk_avgsz",
+ disk,
+ NULL,
+ disk,
+ "disk.avgsz",
+ "Average Completed I/O Operation Bandwidth",
+ "kilobytes per operation",
+ 2006,
+ update_every,
+ RRDSET_TYPE_AREA
+ );
+
+ rrdset_flag_set(dm->st_avagsz, RRDSET_FLAG_DETAIL);
+
+ dm->rd_avagsz_in = rrddim_add(dm->st_avagsz, "reads", NULL, 1, KILO_FACTOR,
+ RRD_ALGORITHM_ABSOLUTE);
+ dm->rd_avagsz_out = rrddim_add(dm->st_avagsz, "writes", NULL, -1, KILO_FACTOR,
+ RRD_ALGORITHM_ABSOLUTE);
+ } else
+ rrdset_next(dm->st_avagsz);
+
+ rrddim_set_by_pointer(dm->st_avagsz, dm->rd_avagsz_in,
+ (dstat[i].operations[DEVSTAT_READ] -
+ dm->prev_dstat.operations_read) ?
+ (dstat[i].bytes[DEVSTAT_READ] - dm->prev_dstat.bytes_read) /
+ (dstat[i].operations[DEVSTAT_READ] -
+ dm->prev_dstat.operations_read) :
+ 0);
+ rrddim_set_by_pointer(dm->st_avagsz, dm->rd_avagsz_out,
+ (dstat[i].operations[DEVSTAT_WRITE] -
+ dm->prev_dstat.operations_write) ?
+ (dstat[i].bytes[DEVSTAT_WRITE] - dm->prev_dstat.bytes_write) /
+ (dstat[i].operations[DEVSTAT_WRITE] -
+ dm->prev_dstat.operations_write) :
+ 0);
+ rrdset_done(dm->st_avagsz);
+ }
+
+ // --------------------------------------------------------------------
+
+ if(dm->do_svctm == CONFIG_BOOLEAN_YES || (dm->do_svctm == CONFIG_BOOLEAN_AUTO &&
+ (dstat[i].operations[DEVSTAT_READ] || dstat[i].operations[DEVSTAT_WRITE]))) {
+ if (unlikely(!dm->st_svctm)) {
+ dm->st_svctm = rrdset_create_localhost("disk_svctm",
+ disk,
+ NULL,
+ disk,
+ "disk.svctm",
+ "Average Service Time",
+ "ms per operation",
+ 2007,
+ update_every,
+ RRDSET_TYPE_LINE
+ );
+
+ rrdset_flag_set(dm->st_svctm, RRDSET_FLAG_DETAIL);
+
+ dm->rd_svctm = rrddim_add(dm->st_svctm, "svctm", NULL, 1, 1,
+ RRD_ALGORITHM_ABSOLUTE);
+ } else
+ rrdset_next(dm->st_svctm);
+
+ rrddim_set_by_pointer(dm->st_svctm, dm->rd_svctm,
+ ((dstat[i].operations[DEVSTAT_READ] - dm->prev_dstat.operations_read) +
+ (dstat[i].operations[DEVSTAT_WRITE] - dm->prev_dstat.operations_write)) ?
+ (cur_dstat.busy_time_ms - dm->prev_dstat.busy_time_ms) /
+ ((dstat[i].operations[DEVSTAT_READ] - dm->prev_dstat.operations_read) +
+ (dstat[i].operations[DEVSTAT_WRITE] - dm->prev_dstat.operations_write)) :
+ 0);
+ rrdset_done(dm->st_svctm);
+ }
+
+ // --------------------------------------------------------------------
+
+ dm->prev_dstat.bytes_read = dstat[i].bytes[DEVSTAT_READ];
+ dm->prev_dstat.bytes_write = dstat[i].bytes[DEVSTAT_WRITE];
+ dm->prev_dstat.operations_read = dstat[i].operations[DEVSTAT_READ];
+ dm->prev_dstat.operations_write = dstat[i].operations[DEVSTAT_WRITE];
+ dm->prev_dstat.duration_read_ms = cur_dstat.duration_read_ms;
+ dm->prev_dstat.duration_write_ms = cur_dstat.duration_write_ms;
+ dm->prev_dstat.busy_time_ms = cur_dstat.busy_time_ms;
+ }
+ }
+ }
+
+ // --------------------------------------------------------------------
+
+ if (likely(do_system_io)) {
+ static RRDSET *st = NULL;
+ static RRDDIM *rd_in = NULL, *rd_out = NULL;