diff options
Diffstat (limited to 'src/proc_diskstats.c')
| -rw-r--r-- | src/proc_diskstats.c | 299 |
1 files changed, 103 insertions, 196 deletions
diff --git a/src/proc_diskstats.c b/src/proc_diskstats.c index 459d5a133..9ccac6dc7 100644 --- a/src/proc_diskstats.c +++ b/src/proc_diskstats.c @@ -12,6 +12,7 @@ static struct disk { unsigned long minor; int sector_size; int type; + char *mount_point; // disk options caching @@ -23,18 +24,16 @@ static struct disk { int do_qops; int do_util; int do_backlog; - int do_space; - int do_inodes; struct disk *next; } *disk_root = NULL; -static struct mountinfo *disk_mountinfo_root = NULL; - static struct disk *get_disk(unsigned long major, unsigned long minor, char *disk) { static char path_to_get_hw_sector_size[FILENAME_MAX + 1] = ""; static char path_to_get_hw_sector_size_partitions[FILENAME_MAX + 1] = ""; static char path_find_block_device[FILENAME_MAX + 1] = ""; + static struct mountinfo *disk_mountinfo_root = NULL; + struct disk *d; // search for it in our RAM list. @@ -43,11 +42,7 @@ static struct disk *get_disk(unsigned long major, unsigned long minor, char *dis // should not be that many, it should be acceptable for(d = disk_root; d ; d = d->next) if(unlikely(d->major == major && d->minor == minor)) - break; - - // if we found it, return it - if(likely(d)) - return d; + return d; // not found // create a new disk structure @@ -62,7 +57,7 @@ static struct disk *get_disk(unsigned long major, unsigned long minor, char *dis d->next = NULL; // append it to the list - if(!disk_root) + if(unlikely(!disk_root)) disk_root = d; else { struct disk *last; @@ -84,18 +79,19 @@ static struct disk *get_disk(unsigned long major, unsigned long minor, char *dis // find if it is a partition // by checking if /sys/dev/block/MAJOR:MINOR/partition is readable. snprintfz(buffer, FILENAME_MAX, path_find_block_device, major, minor, "partition"); - if(access(buffer, R_OK) == 0) { + if(likely(access(buffer, R_OK) == 0)) { d->type = DISK_TYPE_PARTITION; - } else { + } + else { // find if it is a container // by checking if /sys/dev/block/MAJOR:MINOR/slaves has entries snprintfz(buffer, FILENAME_MAX, path_find_block_device, major, minor, "slaves/"); - DIR *dirp = opendir(buffer); - if (dirp != NULL) { + DIR *dirp = opendir(buffer); + if(likely(dirp != NULL)) { struct dirent *dp; while( (dp = readdir(dirp)) ) { // . and .. are also files in empty folders. - if(strcmp(dp->d_name, ".") == 0 || strcmp(dp->d_name, "..") == 0) { + if(unlikely(strcmp(dp->d_name, ".") == 0 || strcmp(dp->d_name, "..") == 0)) { continue; } @@ -104,7 +100,7 @@ static struct disk *get_disk(unsigned long major, unsigned long minor, char *dis // Stop the loop after we found one file. break; } - if(closedir(dirp) == -1) + if(unlikely(closedir(dirp) == -1)) error("Unable to close dir %s", buffer); } } @@ -115,30 +111,25 @@ static struct disk *get_disk(unsigned long major, unsigned long minor, char *dis // mountinfo_find() can be called with NULL disk_mountinfo_root struct mountinfo *mi = mountinfo_find(disk_mountinfo_root, d->major, d->minor); if(unlikely(!mi)) { - // mountinfo_free() can be called with NULL disk_mountinfo_root + // mountinfo_free can be called with NULL mountinfo_free(disk_mountinfo_root); - - // re-read mountinfo in case something changed - disk_mountinfo_root = mountinfo_read(); - - // search again for this disk + disk_mountinfo_root = mountinfo_read(0); mi = mountinfo_find(disk_mountinfo_root, d->major, d->minor); } - if(mi) + if(unlikely(mi)) d->mount_point = strdupz(mi->mount_point); - // no need to check for NULL else d->mount_point = NULL; // ------------------------------------------------------------------------ // find the disk sector size - if(!path_to_get_hw_sector_size[0]) { + if(unlikely(!path_to_get_hw_sector_size[0])) { snprintfz(buffer, FILENAME_MAX, "%s%s", global_host_prefix, "/sys/block/%s/queue/hw_sector_size"); snprintfz(path_to_get_hw_sector_size, FILENAME_MAX, "%s", config_get("plugin:proc:/proc/diskstats", "path to get h/w sector size", buffer)); } - if(!path_to_get_hw_sector_size_partitions[0]) { + if(unlikely(!path_to_get_hw_sector_size_partitions[0])) { snprintfz(buffer, FILENAME_MAX, "%s%s", global_host_prefix, "/sys/dev/block/%lu:%lu/subsystem/%s/../queue/hw_sector_size"); snprintfz(path_to_get_hw_sector_size_partitions, FILENAME_MAX, "%s", config_get("plugin:proc:/proc/diskstats", "path to get h/w sector size for partitions", buffer)); } @@ -149,21 +140,21 @@ static struct disk *get_disk(unsigned long major, unsigned long minor, char *dis // replace all / with ! for(t = tf; *t ;t++) - if(*t == '/') *t = '!'; + if(unlikely(*t == '/')) *t = '!'; - if(d->type == DISK_TYPE_PARTITION) + if(likely(d->type == DISK_TYPE_PARTITION)) snprintfz(buffer, FILENAME_MAX, path_to_get_hw_sector_size_partitions, d->major, d->minor, tf); else snprintfz(buffer, FILENAME_MAX, path_to_get_hw_sector_size, tf); FILE *fpss = fopen(buffer, "r"); - if(fpss) { + if(likely(fpss)) { char buffer2[1024 + 1]; char *tmp = fgets(buffer2, 1024, fpss); - if(tmp) { - d->sector_size = atoi(tmp); - if(d->sector_size <= 0) { + if(likely(tmp)) { + d->sector_size = str2i(tmp); + if(unlikely(d->sector_size <= 0)) { error("Invalid sector size %d for device %s in %s. Assuming 512.", d->sector_size, d->disk, buffer); d->sector_size = 512; } @@ -178,26 +169,41 @@ static struct disk *get_disk(unsigned long major, unsigned long minor, char *dis return d; } -static inline int select_positive_option(int option1, int option2) { - if(option1 == CONFIG_ONDEMAND_YES || option2 == CONFIG_ONDEMAND_YES) - return CONFIG_ONDEMAND_YES; - else if(option1 == CONFIG_ONDEMAND_ONDEMAND || option2 == CONFIG_ONDEMAND_ONDEMAND) - return CONFIG_ONDEMAND_ONDEMAND; +static inline int is_major_enabled(int major) { + static char *major_configs = NULL; + static size_t major_size = 0; + + if(major < 0) return 1; - return CONFIG_ONDEMAND_NO; + size_t wanted_size = (size_t)major + 1; + + if(major_size < wanted_size) { + major_configs = reallocz(major_configs, wanted_size); + + size_t i; + for(i = major_size; i < wanted_size ; i++) + major_configs[i] = -1; + + major_size = wanted_size; + } + + if(major_configs[major] == -1) { + char buffer[CONFIG_MAX_NAME + 1]; + snprintfz(buffer, CONFIG_MAX_NAME, "performance metrics for disks with major %d", major); + major_configs[major] = (char)config_get_boolean("plugin:proc:/proc/diskstats", buffer, 1); + } + + return major_configs[major]; } -int do_proc_diskstats(int update_every, unsigned long long dt) { +int do_proc_diskstats(int update_every, usec_t dt) { + (void)dt; + static procfile *ff = NULL; - static struct statvfs buff_statvfs; - static struct stat buff_stat; static int global_enable_new_disks_detected_at_runtime = CONFIG_ONDEMAND_YES, global_enable_performance_for_physical_disks = CONFIG_ONDEMAND_ONDEMAND, - global_enable_performance_for_virtual_disks = CONFIG_ONDEMAND_NO, + global_enable_performance_for_virtual_disks = CONFIG_ONDEMAND_ONDEMAND, global_enable_performance_for_partitions = CONFIG_ONDEMAND_NO, - global_enable_performance_for_mountpoints = CONFIG_ONDEMAND_NO, - global_enable_performance_for_virtual_mountpoints = CONFIG_ONDEMAND_ONDEMAND, - global_enable_space_for_mountpoints = CONFIG_ONDEMAND_ONDEMAND, global_do_io = CONFIG_ONDEMAND_ONDEMAND, global_do_ops = CONFIG_ONDEMAND_ONDEMAND, global_do_mops = CONFIG_ONDEMAND_ONDEMAND, @@ -205,8 +211,6 @@ int do_proc_diskstats(int update_every, unsigned long long dt) { global_do_qops = CONFIG_ONDEMAND_ONDEMAND, global_do_util = CONFIG_ONDEMAND_ONDEMAND, global_do_backlog = CONFIG_ONDEMAND_ONDEMAND, - global_do_space = CONFIG_ONDEMAND_ONDEMAND, - global_do_inodes = CONFIG_ONDEMAND_ONDEMAND, globals_initialized = 0; if(unlikely(!globals_initialized)) { @@ -215,9 +219,6 @@ int do_proc_diskstats(int update_every, unsigned long long dt) { global_enable_performance_for_physical_disks = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "performance metrics for physical disks", global_enable_performance_for_physical_disks); global_enable_performance_for_virtual_disks = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "performance metrics for virtual disks", global_enable_performance_for_virtual_disks); global_enable_performance_for_partitions = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "performance metrics for partitions", global_enable_performance_for_partitions); - global_enable_performance_for_mountpoints = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "performance metrics for mounted filesystems", global_enable_performance_for_mountpoints); - global_enable_performance_for_virtual_mountpoints = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "performance metrics for mounted virtual disks", global_enable_performance_for_virtual_mountpoints); - global_enable_space_for_mountpoints = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "space metrics for mounted filesystems", global_enable_space_for_mountpoints); global_do_io = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "bandwidth for all disks", global_do_io); global_do_ops = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "operations for all disks", global_do_ops); @@ -226,79 +227,77 @@ int do_proc_diskstats(int update_every, unsigned long long dt) { global_do_qops = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "queued operations for all disks", global_do_qops); global_do_util = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "utilization percentage for all disks", global_do_util); global_do_backlog = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "backlog for all disks", global_do_backlog); - global_do_space = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "space usage for all disks", global_do_space); - global_do_inodes = config_get_boolean_ondemand("plugin:proc:/proc/diskstats", "inodes usage for all disks", global_do_inodes); globals_initialized = 1; } - if(!ff) { + // -------------------------------------------------------------------------- + + if(unlikely(!ff)) { char filename[FILENAME_MAX + 1]; snprintfz(filename, FILENAME_MAX, "%s%s", global_host_prefix, "/proc/diskstats"); ff = procfile_open(config_get("plugin:proc:/proc/diskstats", "filename to monitor", filename), " \t", PROCFILE_FLAG_DEFAULT); } - if(!ff) return 1; + if(unlikely(!ff)) return 0; ff = procfile_readall(ff); - if(!ff) return 0; // we return 0, so that we will retry to open it next time + if(unlikely(!ff)) return 0; // we return 0, so that we will retry to open it next time - uint32_t lines = procfile_lines(ff), l; - uint32_t words; + size_t lines = procfile_lines(ff), l; for(l = 0; l < lines ;l++) { // -------------------------------------------------------------------------- // Read parameters char *disk; - unsigned long long major = 0, minor = 0, - reads = 0, mreads = 0, readsectors = 0, readms = 0, + unsigned long major = 0, minor = 0; + + collected_number reads = 0, mreads = 0, readsectors = 0, readms = 0, writes = 0, mwrites = 0, writesectors = 0, writems = 0, - queued_ios = 0, busy_ms = 0, backlog_ms = 0, - space_avail = 0, space_avail_root = 0, space_used = 0, - inodes_avail = 0, inodes_avail_root = 0, inodes_used = 0; + queued_ios = 0, busy_ms = 0, backlog_ms = 0; - unsigned long long last_reads = 0, last_readsectors = 0, last_readms = 0, + collected_number last_reads = 0, last_readsectors = 0, last_readms = 0, last_writes = 0, last_writesectors = 0, last_writems = 0, last_busy_ms = 0; - words = procfile_linewords(ff, l); - if(words < 14) continue; + size_t words = procfile_linewords(ff, l); + if(unlikely(words < 14)) continue; - major = strtoull(procfile_lineword(ff, l, 0), NULL, 10); - minor = strtoull(procfile_lineword(ff, l, 1), NULL, 10); + major = str2ul(procfile_lineword(ff, l, 0)); + minor = str2ul(procfile_lineword(ff, l, 1)); disk = procfile_lineword(ff, l, 2); // # of reads completed # of writes completed // This is the total number of reads or writes completed successfully. - reads = strtoull(procfile_lineword(ff, l, 3), NULL, 10); // rd_ios - writes = strtoull(procfile_lineword(ff, l, 7), NULL, 10); // wr_ios + reads = str2ull(procfile_lineword(ff, l, 3)); // rd_ios + writes = str2ull(procfile_lineword(ff, l, 7)); // wr_ios // # of reads merged # of writes merged // Reads and writes which are adjacent to each other may be merged for // efficiency. Thus two 4K reads may become one 8K read before it is // ultimately handed to the disk, and so it will be counted (and queued) - mreads = strtoull(procfile_lineword(ff, l, 4), NULL, 10); // rd_merges_or_rd_sec - mwrites = strtoull(procfile_lineword(ff, l, 8), NULL, 10); // wr_merges + mreads = str2ull(procfile_lineword(ff, l, 4)); // rd_merges_or_rd_sec + mwrites = str2ull(procfile_lineword(ff, l, 8)); // wr_merges // # of sectors read # of sectors written // This is the total number of sectors read or written successfully. - readsectors = strtoull(procfile_lineword(ff, l, 5), NULL, 10); // rd_sec_or_wr_ios - writesectors = strtoull(procfile_lineword(ff, l, 9), NULL, 10); // wr_sec + readsectors = str2ull(procfile_lineword(ff, l, 5)); // rd_sec_or_wr_ios + writesectors = str2ull(procfile_lineword(ff, l, 9)); // wr_sec // # of milliseconds spent reading # of milliseconds spent writing // This is the total number of milliseconds spent by all reads or writes (as // measured from __make_request() to end_that_request_last()). - readms = strtoull(procfile_lineword(ff, l, 6), NULL, 10); // rd_ticks_or_wr_sec - writems = strtoull(procfile_lineword(ff, l, 10), NULL, 10); // wr_ticks + readms = str2ull(procfile_lineword(ff, l, 6)); // rd_ticks_or_wr_sec + writems = str2ull(procfile_lineword(ff, l, 10)); // wr_ticks // # of I/Os currently in progress // The only field that should go to zero. Incremented as requests are // given to appropriate struct request_queue and decremented as they finish. - queued_ios = strtoull(procfile_lineword(ff, l, 11), NULL, 10); // ios_pgr + queued_ios = str2ull(procfile_lineword(ff, l, 11)); // ios_pgr // # of milliseconds spent doing I/Os // This field increases so long as field queued_ios is nonzero. - busy_ms = strtoull(procfile_lineword(ff, l, 12), NULL, 10); // tot_ticks + busy_ms = str2ull(procfile_lineword(ff, l, 12)); // tot_ticks // weighted # of milliseconds spent doing I/Os // This field is incremented at each I/O start, I/O completion, I/O @@ -306,7 +305,7 @@ int do_proc_diskstats(int update_every, unsigned long long dt) { // (field queued_ios) times the number of milliseconds spent doing I/O since the // last update of this field. This can provide an easy measure of both // I/O completion time and the backlog that may be accumulating. - backlog_ms = strtoull(procfile_lineword(ff, l, 13), NULL, 10); // rq_ticks + backlog_ms = str2ull(procfile_lineword(ff, l, 13)); // rq_ticks // -------------------------------------------------------------------------- @@ -336,7 +335,7 @@ int do_proc_diskstats(int update_every, unsigned long long dt) { snprintfz(var_name, 4096, "plugin:proc:/proc/diskstats:%s", disk); int def_enable = config_get_boolean_ondemand(var_name, "enable", global_enable_new_disks_detected_at_runtime); - if(def_enable == CONFIG_ONDEMAND_NO) { + if(unlikely(def_enable == CONFIG_ONDEMAND_NO)) { // the user does not want any metrics for this disk d->do_io = CONFIG_ONDEMAND_NO; d->do_ops = CONFIG_ONDEMAND_NO; @@ -345,15 +344,12 @@ int do_proc_diskstats(int update_every, unsigned long long dt) { d->do_qops = CONFIG_ONDEMAND_NO; d->do_util = CONFIG_ONDEMAND_NO; d->do_backlog = CONFIG_ONDEMAND_NO; - d->do_space = CONFIG_ONDEMAND_NO; - d->do_inodes = CONFIG_ONDEMAND_NO; } else { // this disk is enabled // check its direct settings int def_performance = CONFIG_ONDEMAND_ONDEMAND; - int def_space = (d->mount_point)?CONFIG_ONDEMAND_ONDEMAND:CONFIG_ONDEMAND_NO; // since this is 'on demand' we can figure the performance settings // based on the type of disk @@ -369,15 +365,12 @@ int do_proc_diskstats(int update_every, unsigned long long dt) { case DISK_TYPE_CONTAINER: def_performance = global_enable_performance_for_virtual_disks; - - if(d->mount_point) - def_performance = select_positive_option(def_performance, global_enable_performance_for_virtual_mountpoints); - break; } - if(d->mount_point) - def_performance = select_positive_option(def_performance, global_enable_performance_for_mountpoints); + // check if we have to disable performance for this disk + if(def_performance) + def_performance = is_major_enabled((int)major); // ------------------------------------------------------------ // now we have def_performance and def_space @@ -396,7 +389,7 @@ int do_proc_diskstats(int update_every, unsigned long long dt) { ddo_backlog = CONFIG_ONDEMAND_NO; // we enable individual performance charts only when def_performance is not disabled - if(def_performance != CONFIG_ONDEMAND_NO) { + if(unlikely(def_performance != CONFIG_ONDEMAND_NO)) { ddo_io = global_do_io, ddo_ops = global_do_ops, ddo_mops = global_do_mops, @@ -413,23 +406,6 @@ int do_proc_diskstats(int update_every, unsigned long long dt) { d->do_qops = config_get_boolean_ondemand(var_name, "queued operations", ddo_qops); d->do_util = config_get_boolean_ondemand(var_name, "utilization percentage", ddo_util); d->do_backlog = config_get_boolean_ondemand(var_name, "backlog", ddo_backlog); - - // def_space - if(d->mount_point) { - // check the user configuration (this will also show our 'on demand' decision) - def_space = config_get_boolean_ondemand(var_name, "enable space metrics", def_space); - - int ddo_space = def_space, - ddo_inodes = def_space; - - d->do_space = config_get_boolean_ondemand(var_name, "space usage", ddo_space); - d->do_inodes = config_get_boolean_ondemand(var_name, "inodes usage", ddo_inodes); - } - else { - // don't show settings for this disk - d->do_space = CONFIG_ONDEMAND_NO; - d->do_inodes = CONFIG_ONDEMAND_NO; - } } d->configured = 1; @@ -444,13 +420,13 @@ int do_proc_diskstats(int update_every, unsigned long long dt) { d->do_io = CONFIG_ONDEMAND_YES; st = rrdset_find_bytype(RRD_TYPE_DISK, disk); - if(!st) { + if(unlikely(!st)) { st = rrdset_create(RRD_TYPE_DISK, disk, NULL, family, "disk.io", "Disk I/O Bandwidth", "kilobytes/s", 2000, update_every, RRDSET_TYPE_AREA); rrddim_add(st, "reads", NULL, d->sector_size, 1024, RRDDIM_INCREMENTAL); rrddim_add(st, "writes", NULL, d->sector_size * -1, 1024, RRDDIM_INCREMENTAL); } - else rrdset_next_usec(st, dt); + else rrdset_next(st); last_readsectors = rrddim_set(st, "reads", readsectors); last_writesectors = rrddim_set(st, "writes", writesectors); @@ -463,14 +439,14 @@ int do_proc_diskstats(int update_every, unsigned long long dt) { d->do_ops = CONFIG_ONDEMAND_YES; st = rrdset_find_bytype("disk_ops", disk); - if(!st) { + if(unlikely(!st)) { st = rrdset_create("disk_ops", disk, NULL, family, "disk.ops", "Disk Completed I/O Operations", "operations/s", 2001, update_every, RRDSET_TYPE_LINE); st->isdetail = 1; rrddim_add(st, "reads", NULL, 1, 1, RRDDIM_INCREMENTAL); rrddim_add(st, "writes", NULL, -1, 1, RRDDIM_INCREMENTAL); } - else rrdset_next_usec(st, dt); + else rrdset_next(st); last_reads = rrddim_set(st, "reads", reads); last_writes = rrddim_set(st, "writes", writes); @@ -483,13 +459,13 @@ int do_proc_diskstats(int update_every, unsigned long long dt) { d->do_qops = CONFIG_ONDEMAND_YES; st = rrdset_find_bytype("disk_qops", disk); - if(!st) { + if(unlikely(!st)) { st = rrdset_create("disk_qops", disk, NULL, family, "disk.qops", "Disk Current I/O Operations", "operations", 2002, update_every, RRDSET_TYPE_LINE); st->isdetail = 1; rrddim_add(st, "operations", NULL, 1, 1, RRDDIM_ABSOLUTE); } - else rrdset_next_usec(st, dt); + else rrdset_next(st); rrddim_set(st, "operations", queued_ios); rrdset_done(st); @@ -501,13 +477,13 @@ int do_proc_diskstats(int update_every, unsigned long long dt) { d->do_backlog = CONFIG_ONDEMAND_YES; st = rrdset_find_bytype("disk_backlog", disk); - if(!st) { + if(unlikely(!st)) { st = rrdset_create("disk_backlog", disk, NULL, family, "disk.backlog", "Disk Backlog", "backlog (ms)", 2003, update_every, RRDSET_TYPE_AREA); st->isdetail = 1; rrddim_add(st, "backlog", NULL, 1, 10, RRDDIM_INCREMENTAL); } - else rrdset_next_usec(st, dt); + else rrdset_next(st); rrddim_set(st, "backlog", backlog_ms); rrdset_done(st); @@ -519,13 +495,13 @@ int do_proc_diskstats(int update_every, unsigned long long dt) { d->do_util = CONFIG_ONDEMAND_YES; st = rrdset_find_bytype("disk_util", disk); - if(!st) { + if(unlikely(!st)) { st = rrdset_create("disk_util", disk, NULL, family, "disk.util", "Disk Utilization Time", "% of time working", 2004, update_every, RRDSET_TYPE_AREA); st->isdetail = 1; rrddim_add(st, "utilization", NULL, 1, 10, RRDDIM_INCREMENTAL); } - else rrdset_next_usec(st, dt); + else rrdset_next(st); last_busy_ms = rrddim_set(st, "utilization", busy_ms); rrdset_done(st); @@ -537,14 +513,14 @@ int do_proc_diskstats(int update_every, unsigned long long dt) { d->do_mops = CONFIG_ONDEMAND_YES; st = rrdset_find_bytype("disk_mops", disk); - if(!st) { + if(unlikely(!st)) { st = rrdset_create("disk_mops", disk, NULL, family, "disk.mops", "Disk Merged Operations", "merged operations/s", 2021, update_every, RRDSET_TYPE_LINE); st->isdetail = 1; rrddim_add(st, "reads", NULL, 1, 1, RRDDIM_INCREMENTAL); rrddim_add(st, "writes", NULL, -1, 1, RRDDIM_INCREMENTAL); } - else rrdset_next_usec(st, dt); + else rrdset_next(st); rrddim_set(st, "reads", mreads); rrddim_set(st, "writes", mwrites); @@ -557,14 +533,14 @@ int do_proc_diskstats(int update_every, unsigned long long dt) { d->do_iotime = CONFIG_ONDEMAND_YES; st = rrdset_find_bytype("disk_iotime", disk); - if(!st) { + if(unlikely(!st)) { st = rrdset_create("disk_iotime", disk, NULL, family, "disk.iotime", "Disk Total I/O Time", "milliseconds/s", 2022, update_every, RRDSET_TYPE_LINE); st->isdetail = 1; rrddim_add(st, "reads", NULL, 1, 1, RRDDIM_INCREMENTAL); rrddim_add(st, "writes", NULL, -1, 1, RRDDIM_INCREMENTAL); } - else rrdset_next_usec(st, dt); + else rrdset_next(st); last_readms = rrddim_set(st, "reads", readms); last_writems = rrddim_set(st, "writes", writems); @@ -575,18 +551,18 @@ int do_proc_diskstats(int update_every, unsigned long long dt) { // calculate differential charts // only if this is not the first time we run - if(dt) { + if(likely(dt)) { if( (d->do_iotime == CONFIG_ONDEMAND_YES || (d->do_iotime == CONFIG_ONDEMAND_ONDEMAND && (readms || writems))) && (d->do_ops == CONFIG_ONDEMAND_YES || (d->do_ops == CONFIG_ONDEMAND_ONDEMAND && (reads || writes)))) { st = rrdset_find_bytype("disk_await", disk); - if(!st) { + if(unlikely(!st)) { st = rrdset_create("disk_await", disk, NULL, family, "disk.await", "Average Completed I/O Operation Time", "ms per operation", 2005, update_every, RRDSET_TYPE_LINE); st->isdetail = 1; rrddim_add(st, "reads", NULL, 1, 1, RRDDIM_ABSOLUTE); rrddim_add(st, "writes", NULL, -1, 1, RRDDIM_ABSOLUTE); } - else rrdset_next_usec(st, dt); + else rrdset_next(st); rrddim_set(st, "reads", (reads - last_reads) ? (readms - last_readms) / (reads - last_reads) : 0); rrddim_set(st, "writes", (writes - last_writes) ? (writems - last_writems) / (writes - last_writes) : 0); @@ -596,14 +572,14 @@ int do_proc_diskstats(int update_every, unsigned long long dt) { if( (d->do_io == CONFIG_ONDEMAND_YES || (d->do_io == CONFIG_ONDEMAND_ONDEMAND && (readsectors || writesectors))) && (d->do_ops == CONFIG_ONDEMAND_YES || (d->do_ops == CONFIG_ONDEMAND_ONDEMAND && (reads || writes)))) { st = rrdset_find_bytype("disk_avgsz", disk); - if(!st) { + if(unlikely(!st)) { st = rrdset_create("disk_avgsz", disk, NULL, family, "disk.avgsz", "Average Completed I/O Operation Bandwidth", "kilobytes per operation", 2006, update_every, RRDSET_TYPE_AREA); st->isdetail = 1; rrddim_add(st, "reads", NULL, d->sector_size, 1024, RRDDIM_ABSOLUTE); rrddim_add(st, "writes", NULL, d->sector_size * -1, 1024, RRDDIM_ABSOLUTE); } - else rrdset_next_usec(st, dt); + else rrdset_next(st); rrddim_set(st, "reads", (reads - last_reads) ? (readsectors - last_readsectors) / (reads - last_reads) : 0); rrddim_set(st, "writes", (writes - last_writes) ? (writesectors - last_writesectors) / (writes - last_writes) : 0); @@ -613,87 +589,18 @@ int do_proc_diskstats(int update_every, unsigned long long dt) { if( (d->do_util == CONFIG_ONDEMAND_YES || (d->do_util == CONFIG_ONDEMAND_ONDEMAND && busy_ms)) && (d->do_ops == CONFIG_ONDEMAND_YES || (d->do_ops == CONFIG_ONDEMAND_ONDEMAND && (reads || writes)))) { st = rrdset_find_bytype("disk_svctm", disk); - if(!st) { + if(unlikely(!st)) { st = rrdset_create("disk_svctm", disk, NULL, family, "disk.svctm", "Average Service Time", "ms per operation", 2007, update_every, RRDSET_TYPE_LINE); st->isdetail = 1; rrddim_add(st, "svctm", NULL, 1, 1, RRDDIM_ABSOLUTE); } - else rrdset_next_usec(st, dt); + else rrdset_next(st); rrddim_set(st, "svctm", ((reads - last_reads) + (writes - last_writes)) ? (busy_ms - last_busy_ms) / ((reads - last_reads) + (writes - last_writes)) : 0); rrdset_done(st); } } - - // -------------------------------------------------------------------------- - // space metrics - - if(d->mount_point && (d->do_space || d->do_inodes) ) { - // collect space metrics using statvfs - - if (statvfs(d->mount_point, &buff_statvfs) < 0) - error("Failed statvfs() for '%s' (disk '%s')", d->mount_point, d->disk); - else { - space_avail = buff_statvfs.f_bavail * buff_statvfs.f_bsize; - space_avail_root = (buff_statvfs.f_bfree - buff_statvfs.f_bavail) * buff_statvfs.f_bsize; - space_used = (buff_statvfs.f_blocks - buff_statvfs.f_bfree) * buff_statvfs.f_bsize; - - inodes_avail = buff_statvfs.f_favail; - inodes_avail_root = buff_statvfs.f_ffree - buff_statvfs.f_favail; - inodes_used = buff_statvfs.f_files - buff_statvfs.f_ffree; - - // verify we collected the metrics for the right disk. - // if not the mountpoint has changed. - - if(stat(d->mount_point, &buff_stat) == -1) - error("Failed to stat() for '%s' (disk '%s')", d->mount_point, d->disk); - else { - if(major(buff_stat.st_dev) == major && minor(buff_stat.st_dev) == minor) { - - // -------------------------------------------------------------------------- - - if(d->do_space == CONFIG_ONDEMAND_YES || (d->do_space == CONFIG_ONDEMAND_ONDEMAND && (space_avail || space_avail_root || space_used))) { - st = rrdset_find_bytype("disk_space", disk); - if(!st) { - st = rrdset_create("disk_space", disk, NULL, family, "disk.space", "Disk Space Usage", "GB", 2023, update_every, RRDSET_TYPE_STACKED); - st->isdetail = 1; - - rrddim_add(st, "avail", NULL, 1, 1024*1024*1024, RRDDIM_ABSOLUTE); - rrddim_add(st, "used" , NULL, 1, 1024*1024*1024, RRDDIM_ABSOLUTE); - rrddim_add(st, "reserved_for_root", "reserved for root", 1, 1024*1024*1024, RRDDIM_ABSOLUTE); - } - else rrdset_next_usec(st, dt); - - rrddim_set(st, "avail", space_avail); - rrddim_set(st, "used", space_used); - rrddim_set(st, "reserved_for_root", space_avail_root); - rrdset_done(st); - } - - // -------------------------------------------------------------------------- - - if(d->do_inodes == CONFIG_ONDEMAND_YES || (d->do_inodes == CONFIG_ONDEMAND_ONDEMAND && (inodes_avail || inodes_avail_root || inodes_used))) { - st = rrdset_find_bytype("disk_inodes", disk); - if(!st) { - st = rrdset_create("disk_inodes", disk, NULL, family, "disk.inodes", "Disk Inodes Usage", "Inodes", 2024, update_every, RRDSET_TYPE_STACKED); - st->isdetail = 1; - - rrddim_add(st, "avail", NULL, 1, 1, RRDDIM_ABSOLUTE); - rrddim_add(st, "used" , NULL, 1, 1, RRDDIM_ABSOLUTE); - rrddim_add(st, "reserved_for_root", "reserved for root", 1, 1, RRDDIM_ABSOLUTE); - } - else rrdset_next_usec(st, dt); - - rrddim_set(st, "avail", inodes_avail); - rrddim_set(st, "used", inodes_used); - rrddim_set(st, "reserved_for_root", inodes_avail_root); - rrdset_done(st); - } - } - } - } - } } return 0; |