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Add support for changing the number of pages per extent dynamically during runtime. (#10593)

This commit is contained in:
Markos Fountoulakis 2021-03-02 10:09:56 +02:00 committed by GitHub
parent d296fbeefd
commit db9db41bc8
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 19 additions and 1 deletions
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20
database/engine/rrdengine.c
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@ -9,6 +9,8 @@ rrdeng_stats_t rrdeng_reserved_file_descriptors = 0;
rrdeng_stats_t global_pg_cache_over_half_dirty_events = 0;
rrdeng_stats_t global_flushing_pressure_page_deletions = 0;
static unsigned pages_per_extent = MAX_PAGES_PER_EXTENT;
static void sanity_check(void)
{
/* Magic numbers must fit in the super-blocks */
@ -679,7 +681,7 @@ static int do_flush_pages(struct rrdengine_worker_config* wc, int force, struct
PValue = JudyLFirst(pg_cache->committed_page_index.JudyL_array, &Index, PJE0),
descr = unlikely(NULL == PValue) ? NULL : *PValue ;
descr != NULL && count != MAX_PAGES_PER_EXTENT ;
descr != NULL && count != pages_per_extent ;
PValue = JudyLNext(pg_cache->committed_page_index.JudyL_array, &Index, PJE0),
descr = unlikely(NULL == PValue) ? NULL : *PValue) {
@ -1044,6 +1046,21 @@ struct rrdeng_cmd rrdeng_deq_cmd(struct rrdengine_worker_config* wc)
return ret;
}
static void load_configuration_dynamic(void)
{
unsigned read_num;
static int printed_error = 0;
read_num = (unsigned) config_get_number(CONFIG_SECTION_GLOBAL, "dbengine extent pages",
MAX_PAGES_PER_EXTENT);
if (read_num > 0 && read_num <= MAX_PAGES_PER_EXTENT) {
pages_per_extent = read_num;
} else if (!printed_error) {
printed_error = 1;
error("Invalid dbengine extent pages %u given. Defaulting to %u.", read_num, pages_per_extent);
}
}
void async_cb(uv_async_t *handle)
{
uv_stop(handle->loop);
@ -1097,6 +1114,7 @@ void timer_cb(uv_timer_t* handle)
}
}
}
load_configuration_dynamic();
#ifdef NETDATA_INTERNAL_CHECKS
{
char buf[4096];