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Only calculate M_LRS size every 5 seconds

This commit is contained in:
Benny Baumann 2020-11-16 19:12:41 +01:00 committed by BenBE
parent 7f18b352b0
commit 721d9112d9
2 changed files with 22 additions and 3 deletions
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1
linux/LinuxProcess.h
View File

@ -180,6 +180,7 @@ typedef struct LinuxProcess_ {
unsigned long ctxt_total;
unsigned long ctxt_diff;
char* secattr;
unsigned long long int last_mlrs_calctime;
} LinuxProcess;
#define Process_isKernelThread(_process) (((const LinuxProcess*)(_process))->isKernelThread)

24
linux/LinuxProcessList.c
View File

@ -555,18 +555,36 @@ static bool LinuxProcessList_readStatmFile(LinuxProcess* process, const char* di
if (!statmfile)
return false;
long tmp_m_lrs = 0;
int r = fscanf(statmfile, "%ld %ld %ld %ld %ld %ld %ld",
&process->super.m_virt,
&process->super.m_resident,
&process->m_share,
&process->m_trs,
&process->m_lrs,
&tmp_m_lrs,
&process->m_drs,
&process->m_dt);
fclose(statmfile);
if (r == 7 && !process->m_lrs && performLookup) {
process->m_lrs = LinuxProcessList_calcLibSize(dirname, name);
if (r == 7) {
if (tmp_m_lrs) {
process->m_lrs = tmp_m_lrs;
} else if (performLookup) {
// Check if we really should recalculate the M_LRS value for this process
struct timeval tv;
gettimeofday(&tv, NULL);
uint64_t timeInMilliSeconds = (uint64_t)tv.tv_sec * 1000ULL + (uint64_t)tv.tv_usec / 1000ULL;
uint64_t passedTimeInMs = timeInMilliSeconds - process->last_mlrs_calctime;
if(passedTimeInMs > 5000) {
process->last_mlrs_calctime = timeInMilliSeconds;
process->m_lrs = LinuxProcessList_calcLibSize(dirname, name);
}
} else {
// Keep previous value
}
}
return r == 7;
}