windows_exporter/collector/memory.go
Mario Trangoni 57c7911c91 Fix memory collector promtool metric issues
See,
```
windows_memory_demand_zero_faults_total non-counter metrics should not have "_total" suffix
windows_memory_cache_faults_total non-counter metrics should not have "_total" suffix
windows_memory_page_faults_total non-counter metrics should not have "_total" suffix
windows_memory_pool_nonpaged_allocs_total non-counter metrics should not have "_total" suffix
windows_memory_pool_nonpaged_bytes_total non-counter metrics should not have "_total" suffix
windows_memory_pool_paged_allocs_total non-counter metrics should not have "_total" suffix
windows_memory_swap_page_operations_total non-counter metrics should not have "_total" suffix
windows_memory_swap_page_reads_total non-counter metrics should not have "_total" suffix
windows_memory_swap_page_writes_total non-counter metrics should not have "_total" suffix
windows_memory_swap_pages_read_total non-counter metrics should not have "_total" suffix
windows_memory_swap_pages_written_total non-counter metrics should not have "_total" suffix
windows_memory_transition_faults_total non-counter metrics should not have "_total" suffix
windows_memory_transition_pages_repurposed_total non-counter metrics should not have "_total" suffix
windows_memory_write_copies_total non-counter metrics should not have "_total" suffix
```

Only `windows_memory_pool_nonpaged_bytes` is a gauge, all the other
metrics were counters.

Also added some missing documentation.

Signed-off-by: Mario Trangoni <mjtrangoni@gmail.com>
2022-01-07 16:59:29 +01:00

513 lines
18 KiB
Go

// returns data points from Win32_PerfRawData_PerfOS_Memory
// <add link to documentation here> - Win32_PerfRawData_PerfOS_Memory class
//go:build windows
// +build windows
package collector
import (
"github.com/prometheus-community/windows_exporter/log"
"github.com/prometheus/client_golang/prometheus"
)
func init() {
registerCollector("memory", NewMemoryCollector, "Memory")
}
// A MemoryCollector is a Prometheus collector for perflib Memory metrics
type MemoryCollector struct {
AvailableBytes *prometheus.Desc
CacheBytes *prometheus.Desc
CacheBytesPeak *prometheus.Desc
CacheFaultsTotal *prometheus.Desc
CommitLimit *prometheus.Desc
CommittedBytes *prometheus.Desc
DemandZeroFaultsTotal *prometheus.Desc
FreeAndZeroPageListBytes *prometheus.Desc
FreeSystemPageTableEntries *prometheus.Desc
ModifiedPageListBytes *prometheus.Desc
PageFaultsTotal *prometheus.Desc
SwapPageReadsTotal *prometheus.Desc
SwapPagesReadTotal *prometheus.Desc
SwapPagesWrittenTotal *prometheus.Desc
SwapPageOperationsTotal *prometheus.Desc
SwapPageWritesTotal *prometheus.Desc
PoolNonpagedAllocsTotal *prometheus.Desc
PoolNonpagedBytes *prometheus.Desc
PoolPagedAllocsTotal *prometheus.Desc
PoolPagedBytes *prometheus.Desc
PoolPagedResidentBytes *prometheus.Desc
StandbyCacheCoreBytes *prometheus.Desc
StandbyCacheNormalPriorityBytes *prometheus.Desc
StandbyCacheReserveBytes *prometheus.Desc
SystemCacheResidentBytes *prometheus.Desc
SystemCodeResidentBytes *prometheus.Desc
SystemCodeTotalBytes *prometheus.Desc
SystemDriverResidentBytes *prometheus.Desc
SystemDriverTotalBytes *prometheus.Desc
TransitionFaultsTotal *prometheus.Desc
TransitionPagesRepurposedTotal *prometheus.Desc
WriteCopiesTotal *prometheus.Desc
}
// NewMemoryCollector ...
func NewMemoryCollector() (Collector, error) {
const subsystem = "memory"
return &MemoryCollector{
AvailableBytes: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "available_bytes"),
"The amount of physical memory immediately available for allocation to a process or for system use. It is equal to the sum of memory assigned to"+
" the standby (cached), free and zero page lists (AvailableBytes)",
nil,
nil,
),
CacheBytes: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "cache_bytes"),
"(CacheBytes)",
nil,
nil,
),
CacheBytesPeak: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "cache_bytes_peak"),
"(CacheBytesPeak)",
nil,
nil,
),
CacheFaultsTotal: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "cache_faults_total"),
"Number of faults which occur when a page sought in the file system cache is not found there and must be retrieved from elsewhere in memory (soft fault) "+
"or from disk (hard fault) (Cache Faults/sec)",
nil,
nil,
),
CommitLimit: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "commit_limit"),
"(CommitLimit)",
nil,
nil,
),
CommittedBytes: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "committed_bytes"),
"(CommittedBytes)",
nil,
nil,
),
DemandZeroFaultsTotal: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "demand_zero_faults_total"),
"The number of zeroed pages required to satisfy faults. Zeroed pages, pages emptied of previously stored data and filled with zeros, are a security"+
" feature of Windows that prevent processes from seeing data stored by earlier processes that used the memory space (Demand Zero Faults/sec)",
nil,
nil,
),
FreeAndZeroPageListBytes: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "free_and_zero_page_list_bytes"),
"The amount of physical memory, in bytes, that is assigned to the free and zero page lists. This memory does not contain cached data. It is immediately"+
" available for allocation to a process or for system use (FreeAndZeroPageListBytes)",
nil,
nil,
),
FreeSystemPageTableEntries: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "free_system_page_table_entries"),
"(FreeSystemPageTableEntries)",
nil,
nil,
),
ModifiedPageListBytes: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "modified_page_list_bytes"),
"The amount of physical memory, in bytes, that is assigned to the modified page list. This memory contains cached data and code that is not actively in "+
"use by processes, the system and the system cache (ModifiedPageListBytes)",
nil,
nil,
),
PageFaultsTotal: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "page_faults_total"),
"Overall rate at which faulted pages are handled by the processor (Page Faults/sec)",
nil,
nil,
),
SwapPageReadsTotal: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "swap_page_reads_total"),
"Number of disk page reads (a single read operation reading several pages is still only counted once) (PageReadsPersec)",
nil,
nil,
),
SwapPagesReadTotal: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "swap_pages_read_total"),
"Number of pages read across all page reads (ie counting all pages read even if they are read in a single operation) (PagesInputPersec)",
nil,
nil,
),
SwapPagesWrittenTotal: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "swap_pages_written_total"),
"Number of pages written across all page writes (ie counting all pages written even if they are written in a single operation) (PagesOutputPersec)",
nil,
nil,
),
SwapPageOperationsTotal: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "swap_page_operations_total"),
"Total number of swap page read and writes (PagesPersec)",
nil,
nil,
),
SwapPageWritesTotal: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "swap_page_writes_total"),
"Number of disk page writes (a single write operation writing several pages is still only counted once) (PageWritesPersec)",
nil,
nil,
),
PoolNonpagedAllocsTotal: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "pool_nonpaged_allocs_total"),
"The number of calls to allocate space in the nonpaged pool. The nonpaged pool is an area of system memory area for objects that cannot be written"+
" to disk, and must remain in physical memory as long as they are allocated (PoolNonpagedAllocs)",
nil,
nil,
),
PoolNonpagedBytes: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "pool_nonpaged_bytes"),
"Number of bytes in the non-paged pool, an area of the system virtual memory that is used for objects that cannot be written to disk, but must "+
"remain in physical memory as long as they are allocated (PoolNonpagedBytes)",
nil,
nil,
),
PoolPagedAllocsTotal: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "pool_paged_allocs_total"),
"Number of calls to allocate space in the paged pool, regardless of the amount of space allocated in each call (PoolPagedAllocs)",
nil,
nil,
),
PoolPagedBytes: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "pool_paged_bytes"),
"(PoolPagedBytes)",
nil,
nil,
),
PoolPagedResidentBytes: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "pool_paged_resident_bytes"),
"The size, in bytes, of the portion of the paged pool that is currently resident and active in physical memory. The paged pool is an area of the "+
"system virtual memory that is used for objects that can be written to disk when they are not being used (PoolPagedResidentBytes)",
nil,
nil,
),
StandbyCacheCoreBytes: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "standby_cache_core_bytes"),
"The amount of physical memory, in bytes, that is assigned to the core standby cache page lists. This memory contains cached data and code that is "+
"not actively in use by processes, the system and the system cache (StandbyCacheCoreBytes)",
nil,
nil,
),
StandbyCacheNormalPriorityBytes: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "standby_cache_normal_priority_bytes"),
"The amount of physical memory, in bytes, that is assigned to the normal priority standby cache page lists. This memory contains cached data and "+
"code that is not actively in use by processes, the system and the system cache (StandbyCacheNormalPriorityBytes)",
nil,
nil,
),
StandbyCacheReserveBytes: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "standby_cache_reserve_bytes"),
"The amount of physical memory, in bytes, that is assigned to the reserve standby cache page lists. This memory contains cached data and code "+
"that is not actively in use by processes, the system and the system cache (StandbyCacheReserveBytes)",
nil,
nil,
),
SystemCacheResidentBytes: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "system_cache_resident_bytes"),
"The size, in bytes, of the portion of the system file cache which is currently resident and active in physical memory (SystemCacheResidentBytes)",
nil,
nil,
),
SystemCodeResidentBytes: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "system_code_resident_bytes"),
"The size, in bytes, of the pageable operating system code that is currently resident and active in physical memory (SystemCodeResidentBytes)",
nil,
nil,
),
SystemCodeTotalBytes: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "system_code_total_bytes"),
"The size, in bytes, of the pageable operating system code currently mapped into the system virtual address space (SystemCodeTotalBytes)",
nil,
nil,
),
SystemDriverResidentBytes: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "system_driver_resident_bytes"),
"The size, in bytes, of the pageable physical memory being used by device drivers. It is the working set (physical memory area) of the drivers (SystemDriverResidentBytes)",
nil,
nil,
),
SystemDriverTotalBytes: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "system_driver_total_bytes"),
"The size, in bytes, of the pageable virtual memory currently being used by device drivers. Pageable memory can be written to disk when it is not being used (SystemDriverTotalBytes)",
nil,
nil,
),
TransitionFaultsTotal: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "transition_faults_total"),
"Number of faults rate at which page faults are resolved by recovering pages that were being used by another process sharing the page, or were on the "+
"modified page list or the standby list, or were being written to disk at the time of the page fault (TransitionFaultsPersec)",
nil,
nil,
),
TransitionPagesRepurposedTotal: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "transition_pages_repurposed_total"),
"Transition Pages RePurposed is the rate at which the number of transition cache pages were reused for a different purpose (TransitionPagesRePurposedPersec)",
nil,
nil,
),
WriteCopiesTotal: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "write_copies_total"),
"The number of page faults caused by attempting to write that were satisfied by copying the page from elsewhere in physical memory (WriteCopiesPersec)",
nil,
nil,
),
}, nil
}
// Collect sends the metric values for each metric
// to the provided prometheus Metric channel.
func (c *MemoryCollector) Collect(ctx *ScrapeContext, ch chan<- prometheus.Metric) error {
if desc, err := c.collect(ctx, ch); err != nil {
log.Error("failed collecting memory metrics:", desc, err)
return err
}
return nil
}
type memory struct {
AvailableBytes float64 `perflib:"Available Bytes"`
AvailableKBytes float64 `perflib:"Available KBytes"`
AvailableMBytes float64 `perflib:"Available MBytes"`
CacheBytes float64 `perflib:"Cache Bytes"`
CacheBytesPeak float64 `perflib:"Cache Bytes Peak"`
CacheFaultsPersec float64 `perflib:"Cache Faults/sec"`
CommitLimit float64 `perflib:"Commit Limit"`
CommittedBytes float64 `perflib:"Committed Bytes"`
DemandZeroFaultsPersec float64 `perflib:"Demand Zero Faults/sec"`
FreeAndZeroPageListBytes float64 `perflib:"Free & Zero Page List Bytes"`
FreeSystemPageTableEntries float64 `perflib:"Free System Page Table Entries"`
ModifiedPageListBytes float64 `perflib:"Modified Page List Bytes"`
PageFaultsPersec float64 `perflib:"Page Faults/sec"`
PageReadsPersec float64 `perflib:"Page Reads/sec"`
PagesInputPersec float64 `perflib:"Pages Input/sec"`
PagesOutputPersec float64 `perflib:"Pages Output/sec"`
PagesPersec float64 `perflib:"Pages/sec"`
PageWritesPersec float64 `perflib:"Page Writes/sec"`
PoolNonpagedAllocs float64 `perflib:"Pool Nonpaged Allocs"`
PoolNonpagedBytes float64 `perflib:"Pool Nonpaged Bytes"`
PoolPagedAllocs float64 `perflib:"Pool Paged Allocs"`
PoolPagedBytes float64 `perflib:"Pool Paged Bytes"`
PoolPagedResidentBytes float64 `perflib:"Pool Paged Resident Bytes"`
StandbyCacheCoreBytes float64 `perflib:"Standby Cache Core Bytes"`
StandbyCacheNormalPriorityBytes float64 `perflib:"Standby Cache Normal Priority Bytes"`
StandbyCacheReserveBytes float64 `perflib:"Standby Cache Reserve Bytes"`
SystemCacheResidentBytes float64 `perflib:"System Cache Resident Bytes"`
SystemCodeResidentBytes float64 `perflib:"System Code Resident Bytes"`
SystemCodeTotalBytes float64 `perflib:"System Code Total Bytes"`
SystemDriverResidentBytes float64 `perflib:"System Driver Resident Bytes"`
SystemDriverTotalBytes float64 `perflib:"System Driver Total Bytes"`
TransitionFaultsPersec float64 `perflib:"Transition Faults/sec"`
TransitionPagesRePurposedPersec float64 `perflib:"Transition Pages RePurposed/sec"`
WriteCopiesPersec float64 `perflib:"Write Copies/sec"`
}
func (c *MemoryCollector) collect(ctx *ScrapeContext, ch chan<- prometheus.Metric) (*prometheus.Desc, error) {
var dst []memory
if err := unmarshalObject(ctx.perfObjects["Memory"], &dst); err != nil {
return nil, err
}
ch <- prometheus.MustNewConstMetric(
c.AvailableBytes,
prometheus.GaugeValue,
dst[0].AvailableBytes,
)
ch <- prometheus.MustNewConstMetric(
c.CacheBytes,
prometheus.GaugeValue,
dst[0].CacheBytes,
)
ch <- prometheus.MustNewConstMetric(
c.CacheBytesPeak,
prometheus.GaugeValue,
dst[0].CacheBytesPeak,
)
ch <- prometheus.MustNewConstMetric(
c.CacheFaultsTotal,
prometheus.CounterValue,
dst[0].CacheFaultsPersec,
)
ch <- prometheus.MustNewConstMetric(
c.CommitLimit,
prometheus.GaugeValue,
dst[0].CommitLimit,
)
ch <- prometheus.MustNewConstMetric(
c.CommittedBytes,
prometheus.GaugeValue,
dst[0].CommittedBytes,
)
ch <- prometheus.MustNewConstMetric(
c.DemandZeroFaultsTotal,
prometheus.CounterValue,
dst[0].DemandZeroFaultsPersec,
)
ch <- prometheus.MustNewConstMetric(
c.FreeAndZeroPageListBytes,
prometheus.GaugeValue,
dst[0].FreeAndZeroPageListBytes,
)
ch <- prometheus.MustNewConstMetric(
c.FreeSystemPageTableEntries,
prometheus.GaugeValue,
dst[0].FreeSystemPageTableEntries,
)
ch <- prometheus.MustNewConstMetric(
c.ModifiedPageListBytes,
prometheus.GaugeValue,
dst[0].ModifiedPageListBytes,
)
ch <- prometheus.MustNewConstMetric(
c.PageFaultsTotal,
prometheus.CounterValue,
dst[0].PageFaultsPersec,
)
ch <- prometheus.MustNewConstMetric(
c.SwapPageReadsTotal,
prometheus.CounterValue,
dst[0].PageReadsPersec,
)
ch <- prometheus.MustNewConstMetric(
c.SwapPagesReadTotal,
prometheus.CounterValue,
dst[0].PagesInputPersec,
)
ch <- prometheus.MustNewConstMetric(
c.SwapPagesWrittenTotal,
prometheus.CounterValue,
dst[0].PagesOutputPersec,
)
ch <- prometheus.MustNewConstMetric(
c.SwapPageOperationsTotal,
prometheus.CounterValue,
dst[0].PagesPersec,
)
ch <- prometheus.MustNewConstMetric(
c.SwapPageWritesTotal,
prometheus.CounterValue,
dst[0].PageWritesPersec,
)
ch <- prometheus.MustNewConstMetric(
c.PoolNonpagedAllocsTotal,
prometheus.GaugeValue,
dst[0].PoolNonpagedAllocs,
)
ch <- prometheus.MustNewConstMetric(
c.PoolNonpagedBytes,
prometheus.GaugeValue,
dst[0].PoolNonpagedBytes,
)
ch <- prometheus.MustNewConstMetric(
c.PoolPagedAllocsTotal,
prometheus.CounterValue,
dst[0].PoolPagedAllocs,
)
ch <- prometheus.MustNewConstMetric(
c.PoolPagedBytes,
prometheus.GaugeValue,
dst[0].PoolPagedBytes,
)
ch <- prometheus.MustNewConstMetric(
c.PoolPagedResidentBytes,
prometheus.GaugeValue,
dst[0].PoolPagedResidentBytes,
)
ch <- prometheus.MustNewConstMetric(
c.StandbyCacheCoreBytes,
prometheus.GaugeValue,
dst[0].StandbyCacheCoreBytes,
)
ch <- prometheus.MustNewConstMetric(
c.StandbyCacheNormalPriorityBytes,
prometheus.GaugeValue,
dst[0].StandbyCacheNormalPriorityBytes,
)
ch <- prometheus.MustNewConstMetric(
c.StandbyCacheReserveBytes,
prometheus.GaugeValue,
dst[0].StandbyCacheReserveBytes,
)
ch <- prometheus.MustNewConstMetric(
c.SystemCacheResidentBytes,
prometheus.GaugeValue,
dst[0].SystemCacheResidentBytes,
)
ch <- prometheus.MustNewConstMetric(
c.SystemCodeResidentBytes,
prometheus.GaugeValue,
dst[0].SystemCodeResidentBytes,
)
ch <- prometheus.MustNewConstMetric(
c.SystemCodeTotalBytes,
prometheus.GaugeValue,
dst[0].SystemCodeTotalBytes,
)
ch <- prometheus.MustNewConstMetric(
c.SystemDriverResidentBytes,
prometheus.GaugeValue,
dst[0].SystemDriverResidentBytes,
)
ch <- prometheus.MustNewConstMetric(
c.SystemDriverTotalBytes,
prometheus.GaugeValue,
dst[0].SystemDriverTotalBytes,
)
ch <- prometheus.MustNewConstMetric(
c.TransitionFaultsTotal,
prometheus.CounterValue,
dst[0].TransitionFaultsPersec,
)
ch <- prometheus.MustNewConstMetric(
c.TransitionPagesRepurposedTotal,
prometheus.CounterValue,
dst[0].TransitionPagesRePurposedPersec,
)
ch <- prometheus.MustNewConstMetric(
c.WriteCopiesTotal,
prometheus.CounterValue,
dst[0].WriteCopiesPersec,
)
return nil, nil
}