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ZFS arcstats for Darwin (macOS / OS X)

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This commit is contained in:
Ross Williams
2019-07-07 17:30:37 -04:00
parent 070fe90461
commit fc8e9a2d3e
5 changed files with 126 additions and 2 deletions
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80
darwin/DarwinProcessList.c
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@ -54,6 +54,7 @@ int CompareKernelVersion(short int major, short int minor, short int component)
/*{
#include "ProcessList.h"
#include "zfs/ZfsArcStats.h"
#include <mach/mach_host.h>
#include <sys/sysctl.h>
@ -67,10 +68,28 @@ typedef struct DarwinProcessList_ {
uint64_t kernel_threads;
uint64_t user_threads;
uint64_t global_diff;
int zfsArcEnabled;
unsigned long long int zfsArcMax;
unsigned long long int zfsArcSize;
unsigned long long int zfsArcMFU;
unsigned long long int zfsArcMRU;
unsigned long long int zfsArcAnon;
unsigned long long int zfsArcHeader;
unsigned long long int zfsArcOther;
} DarwinProcessList;
}*/
static int MIB_kstat_zfs_misc_arcstats_c_max[5];
static int MIB_kstat_zfs_misc_arcstats_size[5];
static int MIB_kstat_zfs_misc_arcstats_mfu_size[5];
static int MIB_kstat_zfs_misc_arcstats_mru_size[5];
static int MIB_kstat_zfs_misc_arcstats_anon_size[5];
static int MIB_kstat_zfs_misc_arcstats_hdr_size[5];
static int MIB_kstat_zfs_misc_arcstats_other_size[5];
void ProcessList_getHostInfo(host_basic_info_data_t *p) {
mach_msg_type_number_t info_size = HOST_BASIC_INFO_COUNT;
@ -131,8 +150,50 @@ struct kinfo_proc *ProcessList_getKInfoProcs(size_t *count) {
return processes;
}
static inline void DarwinProcessList_scanZfsArcstats(DarwinProcessList* dpl) {
size_t len;
if (dpl->zfsArcEnabled) {
len = sizeof(dpl->zfsArcSize);
sysctl(MIB_kstat_zfs_misc_arcstats_size, 5, &(dpl->zfsArcSize), &len , NULL, 0);
/* TODO: adjust reported memory in use to move ARC from wired to inactive
Like:
// In bytes
dpl->vm_stats.wire_count -= dpl->zfsArcSize / vm_page_size;
dpl->vm_stats.inactive_count += dpl->zfsArcSize / vm_page_size;
// Would purgable_count be more true?
// Then convert to KB:
*/
dpl->zfsArcSize /= 1024;
len = sizeof(dpl->zfsArcMax);
sysctl(MIB_kstat_zfs_misc_arcstats_c_max, 5, &(dpl->zfsArcMax), &len , NULL, 0);
dpl->zfsArcMax /= 1024;
len = sizeof(dpl->zfsArcMFU);
sysctl(MIB_kstat_zfs_misc_arcstats_mfu_size, 5, &(dpl->zfsArcMFU), &len , NULL, 0);
dpl->zfsArcMFU /= 1024;
len = sizeof(dpl->zfsArcMRU);
sysctl(MIB_kstat_zfs_misc_arcstats_mru_size, 5, &(dpl->zfsArcMRU), &len , NULL, 0);
dpl->zfsArcMRU /= 1024;
len = sizeof(dpl->zfsArcAnon);
sysctl(MIB_kstat_zfs_misc_arcstats_anon_size, 5, &(dpl->zfsArcAnon), &len , NULL, 0);
dpl->zfsArcAnon /= 1024;
len = sizeof(dpl->zfsArcHeader);
sysctl(MIB_kstat_zfs_misc_arcstats_hdr_size, 5, &(dpl->zfsArcHeader), &len , NULL, 0);
dpl->zfsArcHeader /= 1024;
len = sizeof(dpl->zfsArcOther);
sysctl(MIB_kstat_zfs_misc_arcstats_other_size, 5, &(dpl->zfsArcOther), &len , NULL, 0);
dpl->zfsArcOther /= 1024;
}
}
ProcessList* ProcessList_new(UsersTable* usersTable, Hashtable* pidWhiteList, uid_t userId) {
size_t len;
DarwinProcessList* this = xCalloc(1, sizeof(DarwinProcessList));
ProcessList_init(&this->super, Class(Process), usersTable, pidWhiteList, userId);
@ -145,6 +206,24 @@ ProcessList* ProcessList_new(UsersTable* usersTable, Hashtable* pidWhiteList, ui
/* Initialize the VM statistics */
ProcessList_getVMStats(&this->vm_stats);
/* Initialize the ZFS kstats, if zfs.kext loaded */
len = sizeof(this->zfsArcSize);
if (sysctlbyname("kstat.zfs.misc.arcstats.size", &this->zfsArcSize, &len,
NULL, 0) == 0 && this->zfsArcSize != 0) {
this->zfsArcEnabled = 1;
len = 5;
sysctlnametomib("kstat.zfs.misc.arcstats.size", MIB_kstat_zfs_misc_arcstats_size, &len);
sysctlnametomib("kstat.zfs.misc.arcstats.c_max", MIB_kstat_zfs_misc_arcstats_c_max, &len);
sysctlnametomib("kstat.zfs.misc.arcstats.mfu_size", MIB_kstat_zfs_misc_arcstats_mfu_size, &len);
sysctlnametomib("kstat.zfs.misc.arcstats.mru_size", MIB_kstat_zfs_misc_arcstats_mru_size, &len);
sysctlnametomib("kstat.zfs.misc.arcstats.anon_size", MIB_kstat_zfs_misc_arcstats_anon_size, &len);
sysctlnametomib("kstat.zfs.misc.arcstats.hdr_size", MIB_kstat_zfs_misc_arcstats_hdr_size, &len);
sysctlnametomib("kstat.zfs.misc.arcstats.other_size", MIB_kstat_zfs_misc_arcstats_other_size, &len);
} else {
this->zfsArcEnabled = 0;
}
this->super.kernelThreads = 0;
this->super.userlandThreads = 0;
this->super.totalTasks = 0;
@ -173,6 +252,7 @@ void ProcessList_goThroughEntries(ProcessList* super) {
dpl->prev_load = dpl->curr_load;
ProcessList_allocateCPULoadInfo(&dpl->curr_load);
ProcessList_getVMStats(&dpl->vm_stats);
DarwinProcessList_scanZfsArcstats(dpl);
/* Get the time difference */
dpl->global_diff = 0;