/**
* collectd - src/disk.c
- * Copyright (C) 2005-2008 Florian octo Forster
+ * Copyright (C) 2005-2010 Florian octo Forster
* Copyright (C) 2009 Manuel Sanmartin
*
* This program is free software; you can redistribute it and/or modify it
/* This overflows in roughly 1361 years */
unsigned int poll_count;
- counter_t read_sectors;
- counter_t write_sectors;
+ derive_t read_sectors;
+ derive_t write_sectors;
- counter_t read_bytes;
- counter_t write_bytes;
+ derive_t read_bytes;
+ derive_t write_bytes;
- counter_t read_ops;
- counter_t write_ops;
- counter_t read_time;
- counter_t write_time;
+ derive_t read_ops;
+ derive_t write_ops;
+ derive_t read_time;
+ derive_t write_time;
- counter_t avg_read_time;
- counter_t avg_write_time;
+ derive_t avg_read_time;
+ derive_t avg_write_time;
struct diskstats *next;
} diskstats_t;
static void disk_submit (const char *plugin_instance,
const char *type,
- counter_t read, counter_t write)
+ derive_t read, derive_t write)
{
value_t values[2];
value_list_t vl = VALUE_LIST_INIT;
if (ignorelist_match (ignorelist, plugin_instance) != 0)
return;
- values[0].counter = read;
- values[1].counter = write;
+ values[0].derive = read;
+ values[1].derive = write;
vl.values = values;
vl.values_len = 2;
plugin_dispatch_values (&vl);
} /* void disk_submit */
+#if KERNEL_LINUX
+static counter_t disk_calc_time_incr (counter_t delta_time, counter_t delta_ops)
+{
+ double avg_time = ((double) delta_time) / ((double) delta_ops);
+ double avg_time_incr = CDTIME_T_TO_DOUBLE (interval_g) * avg_time;
+
+ return ((counter_t) (avg_time_incr + .5));
+}
+#endif
+
#if HAVE_IOKIT_IOKITLIB_H
static signed long long dict_get_value (CFDictionaryRef dict, const char *key)
{
int numfields;
int fieldshift = 0;
- int major = 0;
int minor = 0;
- counter_t read_sectors = 0;
- counter_t write_sectors = 0;
+ derive_t read_sectors = 0;
+ derive_t write_sectors = 0;
- counter_t read_ops = 0;
- counter_t read_merged = 0;
- counter_t read_time = 0;
- counter_t write_ops = 0;
- counter_t write_merged = 0;
- counter_t write_time = 0;
+ derive_t read_ops = 0;
+ derive_t read_merged = 0;
+ derive_t read_time = 0;
+ derive_t write_ops = 0;
+ derive_t write_merged = 0;
+ derive_t write_time = 0;
int is_disk = 0;
diskstats_t *ds, *pre_ds;
if ((numfields != (14 + fieldshift)) && (numfields != 7))
continue;
- major = atoll (fields[0]);
minor = atoll (fields[1]);
disk_name = fields[2 + fieldshift];
}
{
- counter_t diff_read_sectors;
- counter_t diff_write_sectors;
+ derive_t diff_read_sectors;
+ derive_t diff_write_sectors;
/* If the counter wraps around, it's only 32 bits.. */
if (read_sectors < ds->read_sectors)
/* Calculate the average time an io-op needs to complete */
if (is_disk)
{
- counter_t diff_read_ops;
- counter_t diff_write_ops;
- counter_t diff_read_time;
- counter_t diff_write_time;
+ derive_t diff_read_ops;
+ derive_t diff_write_ops;
+ derive_t diff_read_time;
+ derive_t diff_write_time;
if (read_ops < ds->read_ops)
diff_read_ops = 1 + read_ops
+ (UINT_MAX - ds->read_ops);
else
diff_read_ops = read_ops - ds->read_ops;
- DEBUG ("disk plugin: disk_name = %s; read_ops = %llu; "
- "ds->read_ops = %llu; diff_read_ops = %llu;",
+ DEBUG ("disk plugin: disk_name = %s; read_ops = %"PRIi64"; "
+ "ds->read_ops = %"PRIi64"; diff_read_ops = %"PRIi64";",
disk_name,
read_ops, ds->read_ops, diff_read_ops);
diff_write_time = write_time - ds->write_time;
if (diff_read_ops != 0)
- ds->avg_read_time += (diff_read_time
- + (diff_read_ops / 2))
- / diff_read_ops;
+ ds->avg_read_time += disk_calc_time_incr (
+ diff_read_time, diff_read_ops);
if (diff_write_ops != 0)
- ds->avg_write_time += (diff_write_time
- + (diff_write_ops / 2))
- / diff_write_ops;
+ ds->avg_write_time += disk_calc_time_incr (
+ diff_write_time, diff_write_ops);
ds->read_ops = read_ops;
ds->read_time = read_time;
/* #endif defined(HAVE_LIBSTATGRAB) */
#elif defined(HAVE_PERFSTAT)
- counter_t read_sectors;
- counter_t write_sectors;
- counter_t read_time;
- counter_t write_time;
- counter_t read_ops;
- counter_t write_ops;
+ derive_t read_sectors;
+ derive_t write_sectors;
+ derive_t read_time;
+ derive_t write_time;
+ derive_t read_ops;
+ derive_t write_ops;
perfstat_id_t firstpath;
int rnumdisk;
int i;