It mainly involves 2 Functions :

cur_lsn = log_get_lsn(); oldest_lsn = buf_pool_get_oldest_modification(); age
= cur_lsn > oldest_lsn ? cur_lsn - oldest_lsn : 0; pct_for_dirty =
af_get_pct_for_dirty(); pct_for_lsn = af_get_pct_for_lsn(age); pct_total =
ut_max(pct_for_dirty, pct_for_lsn);
//avg_page_rate Equal to the last one srv_flushing_avg_loops The average number of dirty pages flushed to the disk in the loop
// It won't exceed the maximum srv_max_io_capacity value n_pages = (PCT_IO(pct_total) + avg_page_rate) / 2;
if (n_pages > srv_max_io_capacity) { n_pages = srv_max_io_capacity; } n_pages =
page_cleaner_do_flush_batch( n_pages, oldest_lsn + lsn_avg_rate * (age_factor +
1));af_get_pct_for_dirty: // Get dirty page percentage buf_get_total_list_len(&lru_len, &free_len,
&flush_list_len); ratio = (100 * flush_list_len) / (1 + lru_len + free_len); if
(dirty_pct > 0 &&

Technology
©2019-2020 Toolsou All rights reserved,
c Language implementation 《 Student management system 》 No hole is the future of mobile phone ? There are still many problems to be solved Junior , A little sense , Just for mutual encouragement How to use Vue Used in Echarts Visual Library The 11th Blue Bridge Cup Java The second provincial competition B Group part Python- be based on OpenCV Contour fill for flooding algorithm hole filling 【C#】 The realization of student achievement information management system List Common interview questions in the collection and simple ideas China Mobile Science Popularization : Why do mobile networks call “ Cellular mobile network ”【Golang Basic series 10 】Go language On conditional sentences if