diff options
Diffstat (limited to 'innobase/buf/buf0lru.c')
| -rw-r--r-- | innobase/buf/buf0lru.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/innobase/buf/buf0lru.c b/innobase/buf/buf0lru.c index 5ab045212c2..2ec1506c522 100644 --- a/innobase/buf/buf0lru.c +++ b/innobase/buf/buf0lru.c @@ -27,6 +27,7 @@ Created 11/5/1995 Heikki Tuuri #include "buf0rea.h" #include "btr0sea.h" #include "os0file.h" +#include "log0recv.h" /* The number of blocks from the LRU_old pointer onward, including the block pointed to, must be 3/8 of the whole LRU list length, except that the @@ -205,6 +206,44 @@ buf_LRU_get_free_block(void) loop: mutex_enter(&(buf_pool->mutex)); + if (!recv_recovery_on && UT_LIST_GET_LEN(buf_pool->free) + + UT_LIST_GET_LEN(buf_pool->LRU) < buf_pool->max_size / 10) { + ut_print_timestamp(stderr); + + fprintf(stderr, +" InnoDB: ERROR: over 9 / 10 of the buffer pool is occupied by\n" +"InnoDB: lock heaps or the adaptive hash index!\n" +"InnoDB: We intentionally generate a seg fault to print a stack trace\n" +"InnoDB: on Linux!\n"); + + ut_a(0); + + } else if (!recv_recovery_on && UT_LIST_GET_LEN(buf_pool->free) + + UT_LIST_GET_LEN(buf_pool->LRU) < buf_pool->max_size / 5) { + + /* Over 80 % of the buffer pool is occupied by lock heaps + or the adaptive hash index. This may be a memory leak! */ + + ut_print_timestamp(stderr); + fprintf(stderr, +" InnoDB: WARNING: over 4 / 5 of the buffer pool is occupied by\n" +"InnoDB: lock heaps or the adaptive hash index! Check that your\n" +"InnoDB: transactions do not set too many row locks. Starting InnoDB\n" +"InnoDB: Monitor to print diagnostics, including lock heap and hash index\n" +"InnoDB: sizes.\n"); + + srv_print_innodb_monitor = TRUE; + + } else if (!recv_recovery_on && UT_LIST_GET_LEN(buf_pool->free) + + UT_LIST_GET_LEN(buf_pool->LRU) < buf_pool->max_size / 4) { + + /* Switch off the InnoDB Monitor; this is a simple way + to stop the monitor if the situation becomes less urgent, + but may also surprise users! */ + + srv_print_innodb_monitor = FALSE; + } + if (buf_pool->LRU_flush_ended > 0) { mutex_exit(&(buf_pool->mutex)); |