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修复设置tcp参数不生效问题

This commit is contained in:
xue_meng_en 2021-09-27 21:17:20 +08:00
parent da72ef3c68
commit 7965e67ef4
1 changed files with 73 additions and 6 deletions
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79
src/common/backend/utils/misc/guc.cpp
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@ -459,6 +459,12 @@ static bool check_perf_log(char** newval, void** extra, GucSource source);
static bool check_timezone_abbreviations(char** newval, void** extra, GucSource source);
static void assign_timezone_abbreviations(const char* newval, void* extra);
static void pg_timezone_abbrev_initialize(void);
static void assign_tcp_keepalives_idle(int newval, void *extra);
static void assign_tcp_keepalives_interval(int newval, void *extra);
static void assign_tcp_keepalives_count(int newval, void *extra);
static const char* show_tcp_keepalives_idle(void);
static const char* show_tcp_keepalives_interval(void);
static const char* show_tcp_keepalives_count(void);
static bool check_effective_io_concurrency(int* newval, void** extra, GucSource source);
static void assign_effective_io_concurrency(int newval, void* extra);
static void assign_pgstat_temp_directory(const char* newval, void* extra);
@ -2195,8 +2201,8 @@ static void InitConfigureNamesInt()
0,
3600,
NULL,
NULL,
NULL},
assign_tcp_keepalives_idle,
show_tcp_keepalives_idle},
{{"tcp_keepalives_interval",
PGC_USERSET,
@ -2210,8 +2216,8 @@ static void InitConfigureNamesInt()
0,
180,
NULL,
NULL,
NULL},
assign_tcp_keepalives_interval,
show_tcp_keepalives_interval},
{{"tcp_keepalives_count",
PGC_USERSET,
NODE_ALL,
@ -2226,8 +2232,8 @@ static void InitConfigureNamesInt()
0,
100,
NULL,
NULL,
NULL},
assign_tcp_keepalives_count,
show_tcp_keepalives_count},
{{"gin_fuzzy_search_limit",
PGC_USERSET,
NODE_ALL,
@ -11049,6 +11055,67 @@ static void pg_timezone_abbrev_initialize(void)
SetConfigOption("timezone_abbreviations", "Default", PGC_POSTMASTER, PGC_S_DYNAMIC_DEFAULT);
}
static void assign_tcp_keepalives_idle(int newval, void *extra)
{
/*
* The kernel API provides no way to test a value without setting it; and
* once we set it we might fail to unset it. So there seems little point
* in fully implementing the check-then-assign GUC API for these
* variables. Instead we just do the assignment on demand. pqcomm.c
* reports any problems via ereport(LOG).
*
* This approach means that the GUC value might have little to do with the
* actual kernel value, so we use a show_hook that retrieves the kernel
* value rather than trusting GUC's copy.
*/
(void) pq_setkeepalivesidle(newval, u_sess->proc_cxt.MyProcPort);
}
static const char* show_tcp_keepalives_idle(void)
{
/* See comments in assign_tcp_keepalives_idle */
const int maxBufLen = 16;
static char nbuf[maxBufLen];
errno_t rc = snprintf_s(nbuf, maxBufLen, maxBufLen - 1, "%d", pq_getkeepalivesidle(u_sess->proc_cxt.MyProcPort));
securec_check_ss(rc, "\0", "\0");
return nbuf;
}
static void assign_tcp_keepalives_interval(int newval, void *extra)
{
/* See comments in assign_tcp_keepalives_idle */
(void) pq_setkeepalivesinterval(newval, u_sess->proc_cxt.MyProcPort);
}
static const char* show_tcp_keepalives_interval(void)
{
/* See comments in assign_tcp_keepalives_idle */
const int maxBufLen = 16;
static char nbuf[maxBufLen];
errno_t rc = snprintf_s(nbuf, maxBufLen, maxBufLen - 1, "%d", pq_getkeepalivesinterval(u_sess->proc_cxt.MyProcPort));
securec_check_ss(rc, "\0", "\0");
return nbuf;
}
static void assign_tcp_keepalives_count(int newval, void *extra)
{
/* See comments in assign_tcp_keepalives_idle */
(void) pq_setkeepalivescount(newval, u_sess->proc_cxt.MyProcPort);
}
static const char* show_tcp_keepalives_count(void)
{
/* See comments in assign_tcp_keepalives_idle */
const int maxBufLen = 16;
static char nbuf[maxBufLen];
errno_t rc = snprintf_s(nbuf, maxBufLen, maxBufLen - 1, "%d", pq_getkeepalivescount(u_sess->proc_cxt.MyProcPort));
securec_check_ss(rc, "\0", "\0");
return nbuf;
}
static bool check_effective_io_concurrency(int* newval, void** extra, GucSource source)
{
#ifdef USE_PREFETCH