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added Support for memory meter, and slightly adjusted process monitor logic

This commit is contained in:
Martin "eto" Misuth 2015-12-13 04:11:35 +01:00
parent 80f594f314
commit 9d55c56f26
2 changed files with 137 additions and 31 deletions
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160
freebsd/FreeBSDProcessList.c
View File

@ -43,6 +43,15 @@ typedef struct FreeBSDProcessList_ {
ProcessList super;
kvm_t* kd;
int zfsArcEnabled;
unsigned long long int memWire;
unsigned long long int memActive;
unsigned long long int memInactive;
unsigned long long int memFree;
unsigned long long int memZfsArc;
CPUData* cpus;
unsigned long *cp_time_o;
@ -55,48 +64,81 @@ typedef struct FreeBSDProcessList_ {
}*/
static int MIB_vm_stats_vm_v_wire_count[4];
static int MIB_vm_stats_vm_v_cache_count[4];
static int MIB_hw_physmem[2];
static int MIB_vm_stats_vm_v_page_count[4];
static int pageSize;
static int pageSizeKb;
static int MIB_vm_stats_vm_v_wire_count[4];
static int MIB_vm_stats_vm_v_active_count[4];
static int MIB_vm_stats_vm_v_cache_count[4];
static int MIB_vm_stats_vm_v_inactive_count[4];
static int MIB_vm_stats_vm_v_free_count[4];
static int MIB_vfs_bufspace[2];
static int MIB_kstat_zfs_misc_arcstats_size[5];
static int MIB_kern_cp_time[2];
static int MIB_kern_cp_times[2];
static int pageSizeKb;
static int kernelFScale;
ProcessList* ProcessList_new(UsersTable* usersTable, Hashtable* pidWhiteList, uid_t userId) {
FreeBSDProcessList* fpl = calloc(1, sizeof(FreeBSDProcessList));
ProcessList* pl = (ProcessList*) fpl;
ProcessList_init(pl, Class(FreeBSDProcess), usersTable, pidWhiteList, userId);
size_t len;
len = 4; sysctlnametomib("vm.stats.vm.v_wire_count", MIB_vm_stats_vm_v_wire_count, &len);
len = 4; sysctlnametomib("vm.stats.vm.v_cache_count", MIB_vm_stats_vm_v_cache_count, &len);
// physical memory in system: hw.physmem
// physical page size: hw.pagesize
// usable pagesize : vm.stats.vm.v_page_size
len = 2; sysctlnametomib("hw.physmem", MIB_hw_physmem, &len);
len = sizeof(pageSize);
if (sysctlbyname("vm.stats.vm.v_page_size", &pageSize, &len, NULL, 0) == -1) {
pageSize = PAGE_SIZE;
pageSizeKb = PAGE_SIZE_KB;
fpl->kd = kvm_open(NULL, "/dev/null", NULL, 0, NULL);
assert(fpl->kd);
size_t sizeof_kernelFScale = sizeof(kernelFScale);
if (sysctlbyname("kern.fscale", &kernelFScale, &sizeof_kernelFScale, NULL, 0) == -1) {
//sane default on x86 machines, in case this sysctl call failed
kernelFScale = 2048;
} else {
pageSizeKb = pageSize / ONE_K;
}
int smp = 0;
size_t sizeof_smp = sizeof(smp);
// usable page count vm.stats.vm.v_page_count
// actually usable memory : vm.stats.vm.v_page_count * vm.stats.vm.v_page_size
len = 4; sysctlnametomib("vm.stats.vm.v_page_count", MIB_vm_stats_vm_v_page_count, &len);
if (sysctlbyname("kern.smp.active", &smp, &sizeof_smp, NULL, 0) != 0 || sizeof_smp != sizeof(smp)) {
len = 4; sysctlnametomib("vm.stats.vm.v_wire_count", MIB_vm_stats_vm_v_wire_count, &len);
len = 4; sysctlnametomib("vm.stats.vm.v_active_count", MIB_vm_stats_vm_v_active_count, &len);
len = 4; sysctlnametomib("vm.stats.vm.v_cache_count", MIB_vm_stats_vm_v_cache_count, &len);
len = 4; sysctlnametomib("vm.stats.vm.v_inactive_count", MIB_vm_stats_vm_v_inactive_count, &len);
len = 4; sysctlnametomib("vm.stats.vm.v_free_count", MIB_vm_stats_vm_v_free_count, &len);
len = 2; sysctlnametomib("vfs.bufspace", MIB_vfs_bufspace, &len);
len = sizeof(fpl->memZfsArc);
if (sysctlbyname("kstat.zfs.misc.arcstats.size", &fpl->memZfsArc, &len,
NULL, 0) == 0 && fpl->memZfsArc != 0) {
sysctlnametomib("kstat.zfs.misc.arcstats.size", MIB_kstat_zfs_misc_arcstats_size, &len);
fpl->zfsArcEnabled = 1;
} else {
fpl->zfsArcEnabled = 0;
}
int smp = 0;
len = sizeof(smp);
if (sysctlbyname("kern.smp.active", &smp, &len, NULL, 0) != 0 || len != sizeof(smp)) {
smp = 0;
}
int cpus = 1;
size_t sizeof_cpus = sizeof(cpus);
len = sizeof(cpus);
if (smp) {
int err = sysctlbyname("kern.smp.cpus", &cpus, &sizeof_cpus, NULL, 0);
int err = sysctlbyname("kern.smp.cpus", &cpus, &len, NULL, 0);
if (err) cpus = 1;
} else {
cpus = 1;
@ -129,6 +171,16 @@ ProcessList* ProcessList_new(UsersTable* usersTable, Hashtable* pidWhiteList, ui
fpl->cpus = realloc(fpl->cpus, (pl->cpuCount + 1) * sizeof(CPUData));
}
len = sizeof(kernelFScale);
if (sysctlbyname("kern.fscale", &kernelFScale, &len, NULL, 0) == -1) {
//sane default for kernel provded CPU precentage scaling, at least on x86 machines, in case this sysctl call failed
kernelFScale = 2048;
}
fpl->kd = kvm_open(NULL, "/dev/null", NULL, 0, NULL);
assert(fpl->kd);
return pl;
}
@ -226,17 +278,59 @@ static inline void FreeBSDProcessList_scanCPUTime(ProcessList* pl) {
}
static inline void FreeBSDProcessList_scanMemoryInfo(ProcessList* pl) {
const FreeBSDProcessList* fpl = (FreeBSDProcessList*) pl;
FreeBSDProcessList* fpl = (FreeBSDProcessList*) pl;
// @etosan:
// memory counter relationships seem to be these:
// total = active + wired + inactive + cache + free
// htop_used (unavail to anybody) = active + wired
// htop_cache (for cache meter) = buffers + cache
// user_free (avail to procs) = buffers + inactive + cache + free
//
// with ZFS ARC situation becomes bit muddled, as ARC behaves like "user_free"
// and belongs into cache, but is reported as wired by kernel
//
// htop_used = active + (wired - arc)
// htop_cache = buffers + cache + arc
size_t len = sizeof(pl->totalMem);
//disabled for now, as it is always smaller than phycal amount of memory...
//...to avoid "where is my memory?" questions
//sysctl(MIB_vm_stats_vm_v_page_count, 4, &(pl->totalMem), &len, NULL, 0);
//pl->totalMem *= pageSizeKb;
sysctl(MIB_hw_physmem, 2, &(pl->totalMem), &len, NULL, 0);
pl->totalMem /= 1024;
sysctl(MIB_vm_stats_vm_v_wire_count, 4, &(pl->usedMem), &len, NULL, 0);
pl->usedMem *= pageSizeKb;
pl->freeMem = pl->totalMem - pl->usedMem;
sysctl(MIB_vm_stats_vm_v_active_count, 4, &(fpl->memActive), &len, NULL, 0);
fpl->memActive *= pageSizeKb;
sysctl(MIB_vm_stats_vm_v_wire_count, 4, &(fpl->memWire), &len, NULL, 0);
fpl->memWire *= pageSizeKb;
sysctl(MIB_vfs_bufspace, 2, &(pl->buffersMem), &len, NULL, 0);
pl->buffersMem /= 1024;
sysctl(MIB_vm_stats_vm_v_cache_count, 4, &(pl->cachedMem), &len, NULL, 0);
pl->cachedMem *= pageSizeKb;
if (fpl->zfsArcEnabled) {
len = sizeof(fpl->memZfsArc);
sysctl(MIB_kstat_zfs_misc_arcstats_size, 5, &(fpl->memZfsArc), &len , NULL, 0);
fpl->memZfsArc /= 1024;
fpl->memWire -= fpl->memZfsArc;
pl->cachedMem += fpl->memZfsArc;
// maybe when we learn how to make custom memory meter
// we could do custom arc breakdown?
}
pl->usedMem = fpl->memActive + fpl->memWire;
//currently unused, same as with arc, custom meter perhaps
//sysctl(MIB_vm_stats_vm_v_inactive_count, 4, &(fpl->memInactive), &len, NULL, 0);
//sysctl(MIB_vm_stats_vm_v_free_count, 4, &(fpl->memFree), &len, NULL, 0);
//pl->freeMem = fpl->memInactive + fpl->memFree;
//pl->freeMem *= pageSizeKb;
struct kvm_swap swap[16];
int nswap = kvm_getswapinfo(fpl->kd, swap, sizeof(swap)/sizeof(swap[0]), 0);
pl->totalSwap = 0;
@ -249,7 +343,6 @@ static inline void FreeBSDProcessList_scanMemoryInfo(ProcessList* pl) {
pl->usedSwap *= pageSizeKb;
pl->sharedMem = 0; // currently unused
pl->buffersMem = 0; // not exposed to userspace
}
char* FreeBSDProcessList_readProcessName(kvm_t* kd, struct kinfo_proc* kproc, int* basenameEnd) {
@ -334,8 +427,8 @@ void ProcessList_goThroughEntries(ProcessList* this) {
for (int i = 0; i < count; i++) {
struct kinfo_proc* kproc = &kprocs[i];
bool preExisting = false;
bool isIdleProcess = false;
Process* proc = ProcessList_getProcess(this, kproc->ki_pid, &preExisting, (Process_New) FreeBSDProcess_new);
FreeBSDProcess* fp = (FreeBSDProcess*) proc;
@ -381,16 +474,23 @@ void ProcessList_goThroughEntries(ProcessList* this) {
}
}
proc->m_size = kproc->ki_size / pageSizeKb / 1000;
proc->m_resident = kproc->ki_rssize; // * pageSizeKb;
// from FreeBSD source /src/usr.bin/top/machine.c
proc->m_size = kproc->ki_size / 1024;
proc->m_resident = kproc->ki_rssize * pageSizeKb;
proc->nlwp = kproc->ki_numthreads;
proc->time = (kproc->ki_runtime + 5000) / 10000;
proc->percent_cpu = 100.0 * ((double)kproc->ki_pctcpu / (double)kernelFScale);
if (cpus > 1 ) {
if (proc->percent_cpu > 0.1) {
// system idle process should own all CPU time left regardless of CPU count
if ( strcmp("idle", kproc->ki_comm) == 0 ) {
isIdleProcess = true;
} else {
if (cpus > 1)
proc->percent_cpu = proc->percent_cpu / (double) cpus;
}
if (proc->percent_cpu >= 99.8) {
}
if (isIdleProcess == false && proc->percent_cpu >= 99.8) {
// don't break formatting
proc->percent_cpu = 99.8;
}
@ -398,7 +498,7 @@ void ProcessList_goThroughEntries(ProcessList* this) {
proc->priority = kproc->ki_pri.pri_level - PZERO;
if (strcmp("intr", kproc->ki_comm) == 0 && kproc->ki_flag & P_SYSTEM) {
proc->nice = 0; //@etosan: freebsd intr kernel process (not thread) has weird nice value
proc->nice = 0; //@etosan: intr kernel process (not thread) has weird nice value
} else if (kproc->ki_pri.pri_class == PRI_TIMESHARE) {
proc->nice = kproc->ki_nice - NZERO;
} else if (PRI_IS_REALTIME(kproc->ki_pri.pri_class)) {

6
freebsd/Platform.c
View File

@ -178,6 +178,12 @@ double Platform_setCPUValues(Meter* this, int cpu) {
void Platform_setMemoryValues(Meter* this) {
// TODO
ProcessList* pl = (ProcessList*) this->pl;
this->total = pl->totalMem;
this->values[0] = pl->usedMem;
this->values[1] = pl->buffersMem;
this->values[2] = pl->cachedMem;
}
void Platform_setSwapValues(Meter* this) {