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Linux: update IO fields 

- fix header width of IO_READ_RATE

- save data in bytes (not kilobytes) to better compute rate

- fix rate data: multiply with 1000 to compensate time difference in
  milliseconds

- rename unit less variable now into realtimeMs

- use Process_printBytes(..., data * pageSize, ...) instead of
  Process_printKBytes(..., data * pageSizeKB, ...) to avoid wrapper
This commit is contained in:
Christian Göttsche 2021-04-26 17:57:47 +02:00 committed by cgzones
parent b41e4d9c54
commit 323d7e73aa
3 changed files with 35 additions and 31 deletions
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22
linux/LinuxProcess.c
View File

@ -81,7 +81,7 @@ const ProcessFieldData Process_fields[LAST_PROCESSFIELD] = {
[RBYTES] = { .name = "RBYTES", .title = " IO_R ", .description = "Bytes of read(2) I/O for the process", .flags = PROCESS_FLAG_IO, .defaultSortDesc = true, },
[WBYTES] = { .name = "WBYTES", .title = " IO_W ", .description = "Bytes of write(2) I/O for the process", .flags = PROCESS_FLAG_IO, .defaultSortDesc = true, },
[CNCLWB] = { .name = "CNCLWB", .title = " IO_C ", .description = "Bytes of cancelled write(2) I/O", .flags = PROCESS_FLAG_IO, .defaultSortDesc = true, },
[IO_READ_RATE] = { .name = "IO_READ_RATE", .title = " DISK READ ", .description = "The I/O rate of read(2) in bytes per second for the process", .flags = PROCESS_FLAG_IO, .defaultSortDesc = true, },
[IO_READ_RATE] = { .name = "IO_READ_RATE", .title = " DISK READ ", .description = "The I/O rate of read(2) in bytes per second for the process", .flags = PROCESS_FLAG_IO, .defaultSortDesc = true, },
[IO_WRITE_RATE] = { .name = "IO_WRITE_RATE", .title = " DISK WRITE ", .description = "The I/O rate of write(2) in bytes per second for the process", .flags = PROCESS_FLAG_IO, .defaultSortDesc = true, },
[IO_RATE] = { .name = "IO_RATE", .title = " DISK R/W ", .description = "Total I/O rate in bytes per second", .flags = PROCESS_FLAG_IO, .defaultSortDesc = true, },
[CGROUP] = { .name = "CGROUP", .title = " CGROUP ", .description = "Which cgroup the process is in", .flags = PROCESS_FLAG_LINUX_CGROUP, },
@ -611,19 +611,19 @@ static void LinuxProcess_writeField(const Process* this, RichString* str, Proces
switch (field) {
case CMINFLT: Process_printCount(str, lp->cminflt, coloring); return;
case CMAJFLT: Process_printCount(str, lp->cmajflt, coloring); return;
case M_DRS: Process_printKBytes(str, lp->m_drs * pageSizeKB, coloring); return;
case M_DT: Process_printKBytes(str, lp->m_dt * pageSizeKB, coloring); return;
case M_DRS: Process_printBytes(str, lp->m_drs * pageSize, coloring); return;
case M_DT: Process_printBytes(str, lp->m_dt * pageSize, coloring); return;
case M_LRS:
if (lp->m_lrs) {
Process_printKBytes(str, lp->m_lrs * pageSizeKB, coloring);
Process_printBytes(str, lp->m_lrs * pageSize, coloring);
return;
}
attr = CRT_colors[PROCESS_SHADOW];
xSnprintf(buffer, n, " N/A ");
break;
case M_TRS: Process_printKBytes(str, lp->m_trs * pageSizeKB, coloring); return;
case M_SHARE: Process_printKBytes(str, lp->m_share * pageSizeKB, coloring); return;
case M_TRS: Process_printBytes(str, lp->m_trs * pageSize, coloring); return;
case M_SHARE: Process_printBytes(str, lp->m_share * pageSize, coloring); return;
case M_PSS: Process_printKBytes(str, lp->m_pss, coloring); return;
case M_SWAP: Process_printKBytes(str, lp->m_swap, coloring); return;
case M_PSSWP: Process_printKBytes(str, lp->m_psswp, coloring); return;
@ -631,13 +631,13 @@ static void LinuxProcess_writeField(const Process* this, RichString* str, Proces
case STIME: Process_printTime(str, lp->stime, coloring); return;
case CUTIME: Process_printTime(str, lp->cutime, coloring); return;
case CSTIME: Process_printTime(str, lp->cstime, coloring); return;
case RCHAR: Process_printKBytes(str, lp->io_rchar, coloring); return;
case WCHAR: Process_printKBytes(str, lp->io_wchar, coloring); return;
case RCHAR: Process_printBytes(str, lp->io_rchar, coloring); return;
case WCHAR: Process_printBytes(str, lp->io_wchar, coloring); return;
case SYSCR: Process_printCount(str, lp->io_syscr, coloring); return;
case SYSCW: Process_printCount(str, lp->io_syscw, coloring); return;
case RBYTES: Process_printKBytes(str, lp->io_read_bytes, coloring); return;
case WBYTES: Process_printKBytes(str, lp->io_write_bytes, coloring); return;
case CNCLWB: Process_printKBytes(str, lp->io_cancelled_write_bytes, coloring); return;
case RBYTES: Process_printBytes(str, lp->io_read_bytes, coloring); return;
case WBYTES: Process_printBytes(str, lp->io_write_bytes, coloring); return;
case CNCLWB: Process_printBytes(str, lp->io_cancelled_write_bytes, coloring); return;
case IO_READ_RATE: Process_printRate(str, lp->io_rate_read_bps, coloring); return;
case IO_WRITE_RATE: Process_printRate(str, lp->io_rate_write_bps, coloring); return;
case IO_RATE: {

18
linux/LinuxProcess.h
View File

@ -82,10 +82,10 @@ typedef struct LinuxProcess_ {
long m_lrs;
long m_dt;
/* Data read (in kilobytes) */
/* Data read (in bytes) */
unsigned long long io_rchar;
/* Data written (in kilobytes) */
/* Data written (in bytes) */
unsigned long long io_wchar;
/* Number of read(2) syscalls */
@ -94,20 +94,24 @@ typedef struct LinuxProcess_ {
/* Number of write(2) syscalls */
unsigned long long io_syscw;
/* Storage data read (in kilobytes) */
/* Storage data read (in bytes) */
unsigned long long io_read_bytes;
/* Storage data written (in kilobytes) */
/* Storage data written (in bytes) */
unsigned long long io_write_bytes;
/* Storage data cancelled (in kilobytes) */
/* Storage data cancelled (in bytes) */
unsigned long long io_cancelled_write_bytes;
/* Point in time of last io scan (in seconds elapsed since the Epoch) */
unsigned long long io_last_scan_time;
/* Point in time of last io scan (in milliseconds elapsed since the Epoch) */
unsigned long long io_last_scan_time_ms;
/* Storage data read (in bytes per second) */
double io_rate_read_bps;
/* Storage data written (in bytes per second) */
double io_rate_write_bps;
#ifdef HAVE_OPENVZ
char* ctid;
pid_t vpid;

26
linux/LinuxProcessList.c
View File

@ -398,7 +398,7 @@ static bool LinuxProcessList_statProcessDir(Process* process, openat_arg_t procF
return true;
}
static void LinuxProcessList_readIoFile(LinuxProcess* process, openat_arg_t procFd, unsigned long long now) {
static void LinuxProcessList_readIoFile(LinuxProcess* process, openat_arg_t procFd, unsigned long long realtimeMs) {
char buffer[1024];
ssize_t r = xReadfileat(procFd, "io", buffer, sizeof(buffer));
if (r < 0) {
@ -411,7 +411,7 @@ static void LinuxProcessList_readIoFile(LinuxProcess* process, openat_arg_t proc
process->io_read_bytes = ULLONG_MAX;
process->io_write_bytes = ULLONG_MAX;
process->io_cancelled_write_bytes = ULLONG_MAX;
process->io_last_scan_time = now;
process->io_last_scan_time_ms = realtimeMs;
return;
}
@ -423,18 +423,18 @@ static void LinuxProcessList_readIoFile(LinuxProcess* process, openat_arg_t proc
switch (line[0]) {
case 'r':
if (line[1] == 'c' && String_startsWith(line + 2, "har: ")) {
process->io_rchar = strtoull(line + 7, NULL, 10) / ONE_K;
process->io_rchar = strtoull(line + 7, NULL, 10);
} else if (String_startsWith(line + 1, "ead_bytes: ")) {
process->io_read_bytes = strtoull(line + 12, NULL, 10) / ONE_K;
process->io_rate_read_bps = ONE_K * (process->io_read_bytes - last_read) / (now - process->io_last_scan_time);
process->io_read_bytes = strtoull(line + 12, NULL, 10);
process->io_rate_read_bps = (process->io_read_bytes - last_read) * /*ms to s*/1000 / (realtimeMs - process->io_last_scan_time_ms);
}
break;
case 'w':
if (line[1] == 'c' && String_startsWith(line + 2, "har: ")) {
process->io_wchar = strtoull(line + 7, NULL, 10) / ONE_K;
process->io_wchar = strtoull(line + 7, NULL, 10);
} else if (String_startsWith(line + 1, "rite_bytes: ")) {
process->io_write_bytes = strtoull(line + 13, NULL, 10) / ONE_K;
process->io_rate_write_bps = ONE_K * (process->io_write_bytes - last_write) / (now - process->io_last_scan_time);
process->io_write_bytes = strtoull(line + 13, NULL, 10);
process->io_rate_write_bps = (process->io_write_bytes - last_write) * /*ms to s*/1000 / (realtimeMs - process->io_last_scan_time_ms);
}
break;
case 's':
@ -446,12 +446,12 @@ static void LinuxProcessList_readIoFile(LinuxProcess* process, openat_arg_t proc
break;
case 'c':
if (String_startsWith(line + 1, "ancelled_write_bytes: ")) {
process->io_cancelled_write_bytes = strtoull(line + 23, NULL, 10) / ONE_K;
process->io_cancelled_write_bytes = strtoull(line + 23, NULL, 10);
}
}
}
process->io_last_scan_time = now;
process->io_last_scan_time_ms = realtimeMs;
}
typedef struct LibraryData_ {
@ -594,7 +594,7 @@ static uint64_t LinuxProcessList_calcLibSize(openat_arg_t procFd) {
return total_size / pageSize;
}
static bool LinuxProcessList_readStatmFile(LinuxProcess* process, openat_arg_t procFd, bool performLookup, unsigned long long now) {
static bool LinuxProcessList_readStatmFile(LinuxProcess* process, openat_arg_t procFd, bool performLookup, unsigned long long realtimeMs) {
FILE* statmfile = fopenat(procFd, "statm", "r");
if (!statmfile)
return false;
@ -618,12 +618,12 @@ static bool LinuxProcessList_readStatmFile(LinuxProcess* process, openat_arg_t p
process->m_lrs = tmp_m_lrs;
} else if (performLookup) {
// Check if we really should recalculate the M_LRS value for this process
uint64_t passedTimeInMs = now - process->last_mlrs_calctime;
uint64_t passedTimeInMs = realtimeMs - process->last_mlrs_calctime;
uint64_t recheck = ((uint64_t)rand()) % 2048;
if(passedTimeInMs > 2000 || passedTimeInMs > recheck) {
process->last_mlrs_calctime = now;
process->last_mlrs_calctime = realtimeMs;
process->m_lrs = LinuxProcessList_calcLibSize(procFd);
}
} else {