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proc: del unused items getting from proc stat refresh

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Currently, vmtop gets a lot of items from /proc/pid/stat, and there
are many unused data in these items, which will add a lot of cpu usage.
So, del these item's getting process.

Signed-off-by: nocjj <1250062498@qq.com>
This commit is contained in:
Huawei Technologies Co., Ltd 2021-03-16 13:55:36 +08:00 committed by Alex Chen
parent 2306ad24de
commit 13badcdda8
1 changed files with 153 additions and 0 deletions
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153
proc-del-unused-items-getting-from-proc-stat-refresh.patch Normal file
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@ -0,0 +1,153 @@
From da33b45b1945c2eae9cadb04b021179e2640670a Mon Sep 17 00:00:00 2001
From: nocjj <1250062498@qq.com>
Date: Tue, 16 Mar 2021 13:55:36 +0800
Subject: [PATCH] proc: del unused items getting from proc stat refresh
Currently, vmtop gets a lot of items from /proc/pid/stat, and there
are many unused data in these items, which will add a lot of cpu usage.
So, del these item's getting process.
Signed-off-by: nocjj <1250062498@qq.com>
---
src/proc.c | 28 +++++++++++++---------------
src/proc.h | 14 --------------
src/type.h | 16 +---------------
3 files changed, 14 insertions(+), 44 deletions(-)
diff --git a/src/proc.c b/src/proc.c
index 0263c67..d33ede3 100644
--- a/src/proc.c
+++ b/src/proc.c
@@ -24,9 +24,9 @@ struct file_item proc_stab[] = {
{"%c", GF(state)},
{"%d", GF(ppid)},
{"%d", GF(pgrd)},
- {"%d", GF(session)},
- {"%d", GF(tty)},
- {"%d", GF(tpgid)},
+ {"%*d", NULL, NULL, NULL},
+ {"%*d", NULL, NULL, NULL},
+ {"%*d", NULL, NULL, NULL},
{"%lu", GF(flags)},
{"%lu", GF(min_flt)},
{"%lu", GF(cmin_flt)},
@@ -36,30 +36,28 @@ struct file_item proc_stab[] = {
{"%llu", GDF(stime)},
{"%llu", GF(cutime)},
{"%llu", GF(cstime)},
- {"%ld", GF(priority)},
- {"%ld", GF(nice)},
+ {"%*ld", NULL, NULL, NULL},
+ {"%*ld", NULL, NULL, NULL},
{"%d", GF(nlwp)},
{"%ld", GF(alarm)},
{"%llu", GF(start_time)},
{"%lu", GF(vsize)},
{"%ld", GF(rss)},
{"%lu", GF(rss_rlim)},
- {"%lu", GF(start_code)},
- {"%lu", GF(end_code)},
- {"%lu", GF(start_stack)},
- {"%lu", GF(kstk_esp)},
- {"%lu", GF(kstk_eip)},
+ {"%*lu", NULL, NULL, NULL},
+ {"%*lu", NULL, NULL, NULL},
+ {"%*lu", NULL, NULL, NULL},
+ {"%*lu", NULL, NULL, NULL},
+ {"%*lu", NULL, NULL, NULL},
{"%*s", NULL, NULL, NULL}, /* discard signal */
{"%*s", NULL, NULL, NULL}, /* discard blocked */
{"%*s", NULL, NULL, NULL}, /* discard sigignore */
{"%*s", NULL, NULL, NULL}, /* discard sigcatch */
- {"%lu", GF(wchan)},
+ {"%*lu", NULL, NULL, NULL},
{"%*u", NULL, NULL, NULL}, /* dsicard nswap */
{"%*u", NULL, NULL, NULL}, /* discard cnswap */
- {"%d", GF(exit_signal)},
- {"%d", GF(processor)},
- {"%lu", GF(rtprio)},
- {"%lu", GF(sched)}
+ {"%*d", NULL, NULL, NULL},
+ {"%d", GF(processor)}
#undef GF
#undef GDF
};
diff --git a/src/proc.h b/src/proc.h
index a7fd443..0061ab1 100644
--- a/src/proc.h
+++ b/src/proc.h
@@ -16,9 +16,6 @@
GET_VALUE(state)
GET_VALUE(ppid)
GET_VALUE(pgrd)
-GET_VALUE(session)
-GET_VALUE(tty)
-GET_VALUE(tpgid)
GET_VALUE(flags)
GET_VALUE(min_flt)
GET_VALUE(cmin_flt)
@@ -28,24 +25,13 @@ GET_DELTA_FUN(utime)
GET_DELTA_FUN(stime)
GET_VALUE(cutime)
GET_VALUE(cstime)
-GET_VALUE(priority)
-GET_VALUE(nice)
GET_VALUE(nlwp)
GET_VALUE(alarm)
GET_VALUE(start_time)
GET_VALUE(vsize)
GET_VALUE(rss)
GET_VALUE(rss_rlim)
-GET_VALUE(start_code)
-GET_VALUE(end_code)
-GET_VALUE(start_stack)
-GET_VALUE(kstk_esp)
-GET_VALUE(kstk_eip)
-GET_VALUE(wchan)
-GET_VALUE(exit_signal)
GET_VALUE(processor)
-GET_VALUE(rtprio)
-GET_VALUE(sched)
int get_proc_stat(struct domain *dom);
void refresh_delta_stat(struct domain *new, struct domain *old);
diff --git a/src/type.h b/src/type.h
index 3c08387..f5d148c 100644
--- a/src/type.h
+++ b/src/type.h
@@ -81,15 +81,9 @@ struct domain {
int
ppid,
pgrd,
- session,
- tty,
- tpgid,
nlwp,
- exit_signal,
processor;
long int
- priority,
- nice,
alarm,
rss;
unsigned int
@@ -99,15 +93,7 @@ struct domain {
maj_flt,
cmaj_flt,
vsize,
- rss_rlim,
- start_code,
- end_code,
- start_stack,
- kstk_esp,
- kstk_eip,
- rtprio,
- sched,
- wchan;
+ rss_rlim;
u64
DFX_VALUE(utime),
DFX_VALUE(stime),
--
2.27.0