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Add ZFS ARC statistics and meters to the PCP platform

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This commit is contained in:
Sohaib 2021-02-22 16:45:44 +11:00 committed by Nathan Scott
parent 6bb59f8881
commit e1d1a5cec6
5 changed files with 99 additions and 3 deletions
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9
Makefile.am
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@ -338,7 +338,10 @@ pcp_platform_headers = \
pcp/ProcessField.h \
linux/PressureStallMeter.h \
linux/ZramMeter.h \
linux/ZramStats.h
linux/ZramStats.h \
zfs/ZfsArcMeter.h \
zfs/ZfsArcStats.h \
zfs/ZfsCompressedArcMeter.h
if HTOP_PCP
myhtopplatsources = \
@ -346,7 +349,9 @@ myhtopplatsources = \
pcp/PCPProcessList.c \
pcp/Platform.c \
linux/PressureStallMeter.c \
linux/ZramMeter.c
linux/ZramMeter.c \
zfs/ZfsArcMeter.c \
zfs/ZfsCompressedArcMeter.c
myhtopplatheaders = $(pcp_platform_headers)
endif

40
pcp/PCPProcessList.c
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@ -733,6 +733,45 @@ static void PCPProcessList_updateHeader(ProcessList* super, const Settings* sett
PCPProcessList_updatePerCPUReal(this, PCP_HINV_CPUCLOCK, CPU_FREQUENCY);
}
static inline void PCPProcessList_scanZfsArcstats(PCPProcessList* this) {
unsigned long long int dbufSize = 0;
unsigned long long int dnodeSize = 0;
unsigned long long int bonusSize = 0;
pmAtomValue value,
comp,
uncomp;
if (Metric_values(PCP_ZFS_ARC_ANON_SIZE, &value, 1, PM_TYPE_U64))
this->zfs.anon = value.ull / 1024;
if (Metric_values(PCP_ZFS_ARC_C_MAX, &value, 1, PM_TYPE_U64))
this->zfs.max = value.ull / 1024;
if (Metric_values(PCP_ZFS_ARC_BONUS_SIZE, &value, 1, PM_TYPE_U64))
bonusSize = value.ull / 1024;
if (Metric_values(PCP_ZFS_ARC_DBUF_SIZE, &value, 1, PM_TYPE_U64))
dbufSize = value.ull / 1024;
if (Metric_values(PCP_ZFS_ARC_DNODE_SIZE, &value, 1, PM_TYPE_U64))
dnodeSize = value.ull / 1024;
if (Metric_values(PCP_ZFS_ARC_COMPRESSED_SIZE, &comp, 1, PM_TYPE_U64)) {
this->zfs.isCompressed = 1;
}
if (Metric_values(PCP_ZFS_ARC_UNCOMPRESSED_SIZE, &uncomp, 1, PM_TYPE_U64))
if (Metric_values(PCP_ZFS_ARC_HDR_SIZE, &value, 1, PM_TYPE_U64))
this->zfs.header = value.ull / 1024;
if (Metric_values(PCP_ZFS_ARC_MFU_SIZE, &value, 1, PM_TYPE_U64))
this->zfs.MFU = value.ull / 1024;
if (Metric_values(PCP_ZFS_ARC_MRU_SIZE, &value, 1, PM_TYPE_U64))
this->zfs.MRU = value.ull / 1024;
if (Metric_values(PCP_ZFS_ARC_SIZE, &value, 1, PM_TYPE_U64))
this->zfs.size = value.ull / 1024;
this->zfs.enabled = (this->zfs.size > 0 ? 1 : 0);
this->zfs.other = (dbufSize + dnodeSize + bonusSize) / 1024;
if ( this->zfs.isCompressed ) {
this->zfs.compressed = comp.ull /1024;
this->zfs.uncompressed = uncomp.ull /1024;
}
}
void ProcessList_goThroughEntries(ProcessList* super, bool pauseProcessUpdate) {
PCPProcessList* this = (PCPProcessList*) super;
const Settings* settings = super->settings;
@ -769,6 +808,7 @@ void ProcessList_goThroughEntries(ProcessList* super, bool pauseProcessUpdate) {
this->timestamp = pmtimevalToReal(&timestamp);
PCPProcessList_updateHeader(super, settings);
PCPProcessList_scanZfsArcstats(this);
/* In pause mode only update global data for meters (CPU, memory, etc) */
if (pauseProcessUpdate)

2
pcp/PCPProcessList.h
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@ -16,6 +16,7 @@ in the source distribution for its full text.
#include "ProcessList.h"
#include "pcp/Platform.h"
#include "UsersTable.h"
#include "zfs/ZfsArcStats.h"
typedef enum CPUMetric_ {
CPU_TOTAL_TIME,
@ -57,6 +58,7 @@ typedef struct PCPProcessList_ {
pmAtomValue* cpu; /* aggregate values for each metric */
pmAtomValue** percpu; /* per-processor values for each metric */
pmAtomValue* values; /* per-processor buffer for just one metric */
ZfsArcStats zfs;
} PCPProcessList;
ProcessList* ProcessList_new(UsersTable* usersTable, Hashtable* pidMatchList, uid_t userId);

36
pcp/Platform.c
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@ -38,10 +38,12 @@ in the source distribution for its full text.
#include "TasksMeter.h"
#include "UptimeMeter.h"
#include "XUtils.h"
#include "linux/PressureStallMeter.h"
#include "linux/ZramMeter.h"
#include "linux/ZramStats.h"
#include "zfs/ZfsArcMeter.h"
#include "zfs/ZfsArcStats.h"
#include "zfs/ZfsCompressedArcMeter.h"
typedef struct Platform_ {
int context; /* PMAPI(3) context identifier */
@ -100,6 +102,8 @@ const MeterClass* const Platform_meterTypes[] = {
&PressureStallIOFullMeter_class,
&PressureStallMemorySomeMeter_class,
&PressureStallMemoryFullMeter_class,
&ZfsArcMeter_class,
&ZfsCompressedArcMeter_class,
&ZramMeter_class,
&DiskIOMeter_class,
&NetworkIOMeter_class,
@ -161,6 +165,18 @@ static const char *Platform_metricNames[] = {
[PCP_PSI_MEMSOME] = "kernel.all.pressure.memory.some.avg",
[PCP_PSI_MEMFULL] = "kernel.all.pressure.memory.full.avg",
[PCP_ZFS_ARC_ANON_SIZE] = "zfs.arc.anon_size",
[PCP_ZFS_ARC_BONUS_SIZE] = "zfs.arc.bonus_size",
[PCP_ZFS_ARC_COMPRESSED_SIZE] = "zfs.arc.compressed_size",
[PCP_ZFS_ARC_UNCOMPRESSED_SIZE] = "zfs.arc.uncompressed_size",
[PCP_ZFS_ARC_C_MAX] = "zfs.arc.c_max",
[PCP_ZFS_ARC_DBUF_SIZE] = "zfs.arc.dbuf_size",
[PCP_ZFS_ARC_DNODE_SIZE] = "zfs.arc.dnode_size",
[PCP_ZFS_ARC_HDR_SIZE] = "zfs.arc.hdr_size",
[PCP_ZFS_ARC_MFU_SIZE] = "zfs.arc.mfu.size",
[PCP_ZFS_ARC_MRU_SIZE] = "zfs.arc.mru.size",
[PCP_ZFS_ARC_SIZE] = "zfs.arc.size",
[PCP_ZRAM_CAPACITY] = "zram.capacity",
[PCP_ZRAM_ORIGINAL] = "zram.mm_stat.data_size.original",
[PCP_ZRAM_COMPRESSED] = "zram.mm_stat.data_size.compressed",
@ -562,6 +578,7 @@ double Platform_setCPUValues(Meter* this, int cpu) {
void Platform_setMemoryValues(Meter* this) {
const ProcessList* pl = this->pl;
const PCPProcessList* ppl = (const PCPProcessList*) pl;
long int usedMem = pl->usedMem;
long int buffersMem = pl->buffersMem;
long int cachedMem = pl->cachedMem;
@ -570,6 +587,11 @@ void Platform_setMemoryValues(Meter* this) {
this->values[0] = usedMem;
this->values[1] = buffersMem;
this->values[2] = cachedMem;
if (ppl->zfs.enabled != 0) {
this->values[0] -= ppl->zfs.size;
this->values[2] += ppl->zfs.size;
}
}
void Platform_setSwapValues(Meter* this) {
@ -606,6 +628,18 @@ void Platform_setZramValues(Meter* this) {
this->values[1] = stats.usedZramOrig;
}
void Platform_setZfsArcValues(Meter* this) {
const PCPProcessList* ppl = (const PCPProcessList*) this->pl;
ZfsArcMeter_readStats(this, &(ppl->zfs));
}
void Platform_setZfsCompressedArcValues(Meter* this) {
const PCPProcessList* ppl = (const PCPProcessList*) this->pl;
ZfsCompressedArcMeter_readStats(this, &(ppl->zfs));
}
char* Platform_getProcessEnv(pid_t pid) {
pmAtomValue value;
if (!Metric_instance(PCP_PROC_ENVIRON, pid, 0, &value, PM_TYPE_STRING))

15
pcp/Platform.h
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@ -62,6 +62,10 @@ void Platform_setSwapValues(Meter* this);
void Platform_setZramValues(Meter* this);
void Platform_setZfsArcValues(Meter* this);
void Platform_setZfsCompressedArcValues(Meter* this);
char* Platform_getProcessEnv(pid_t pid);
char* Platform_getInodeFilename(pid_t pid, ino_t inode);
@ -132,6 +136,17 @@ typedef enum Metric_ {
PCP_PSI_IOFULL, /* kernel.all.pressure.io.full.avg */
PCP_PSI_MEMSOME, /* kernel.all.pressure.memory.some.avg */
PCP_PSI_MEMFULL, /* kernel.all.pressure.memory.full.avg */
PCP_ZFS_ARC_ANON_SIZE, /* zfs.arc.anon_size */
PCP_ZFS_ARC_BONUS_SIZE, /* zfs.arc.bonus_size */
PCP_ZFS_ARC_COMPRESSED_SIZE, /* zfs.arc.compressed_size */
PCP_ZFS_ARC_UNCOMPRESSED_SIZE, /* zfs.arc.uncompressed_size */
PCP_ZFS_ARC_C_MAX, /* zfs.arc.c_max */
PCP_ZFS_ARC_DBUF_SIZE, /* zfs.arc.dbuf_size */
PCP_ZFS_ARC_DNODE_SIZE, /* zfs.arc.dnode_size */
PCP_ZFS_ARC_HDR_SIZE, /* zfs.arc.hdr_size */
PCP_ZFS_ARC_MFU_SIZE, /* zfs.arc.mfu_size */
PCP_ZFS_ARC_MRU_SIZE, /* zfs.arc.mru_size */
PCP_ZFS_ARC_SIZE, /* zfs.arc.size */
PCP_ZRAM_CAPACITY, /* zram.capacity */
PCP_ZRAM_ORIGINAL, /* zram.mm_stat.data_size.original */
PCP_ZRAM_COMPRESSED, /* zram.mm_stat.data_size.compressed */