diff options
Diffstat (limited to 'innobase/buf/buf0buf.c')
| -rw-r--r-- | innobase/buf/buf0buf.c | 36 |
1 files changed, 24 insertions, 12 deletions
diff --git a/innobase/buf/buf0buf.c b/innobase/buf/buf0buf.c index 7d001a6953d..80e89e16588 100644 --- a/innobase/buf/buf0buf.c +++ b/innobase/buf/buf0buf.c @@ -1798,8 +1798,10 @@ buf_get_n_pending_ios(void) Prints info of the buffer i/o. */ void -buf_print_io(void) -/*==============*/ +buf_print_io( +/*=========*/ + char* buf, /* in/out: buffer where to print */ + char* buf_end)/* in: buffer end */ { time_t current_time; double time_elapsed; @@ -1807,19 +1809,28 @@ buf_print_io(void) ut_ad(buf_pool); + if (buf_end - buf < 400) { + + return; + } + size = buf_pool_get_curr_size() / UNIV_PAGE_SIZE; mutex_enter(&(buf_pool->mutex)); - printf("Free list length %lu \n", UT_LIST_GET_LEN(buf_pool->free)); - printf("LRU list length %lu \n", UT_LIST_GET_LEN(buf_pool->LRU)); - printf("Flush list length %lu \n", + buf += sprintf(buf, + "Free list length %lu \n", UT_LIST_GET_LEN(buf_pool->free)); + buf += sprintf(buf, + "LRU list length %lu \n", UT_LIST_GET_LEN(buf_pool->LRU)); + buf += sprintf(buf, + "Flush list length %lu \n", UT_LIST_GET_LEN(buf_pool->flush_list)); - printf("Buffer pool size %lu\n", size); + buf += sprintf(buf, "Buffer pool size %lu\n", size); - printf("Pending reads %lu \n", buf_pool->n_pend_reads); + buf += sprintf(buf, "Pending reads %lu \n", buf_pool->n_pend_reads); - printf("Pending writes: LRU %lu, flush list %lu, single page %lu\n", + buf += sprintf(buf, + "Pending writes: LRU %lu, flush list %lu, single page %lu\n", buf_pool->n_flush[BUF_FLUSH_LRU], buf_pool->n_flush[BUF_FLUSH_LIST], buf_pool->n_flush[BUF_FLUSH_SINGLE_PAGE]); @@ -1829,10 +1840,10 @@ buf_print_io(void) buf_pool->last_printout_time = current_time; - printf("Pages read %lu, created %lu, written %lu\n", + buf += sprintf(buf, "Pages read %lu, created %lu, written %lu\n", buf_pool->n_pages_read, buf_pool->n_pages_created, buf_pool->n_pages_written); - printf("%.2f reads/s, %.2f creates/s, %.2f writes/s\n", + buf += sprintf(buf, "%.2f reads/s, %.2f creates/s, %.2f writes/s\n", (buf_pool->n_pages_read - buf_pool->n_pages_read_old) / time_elapsed, (buf_pool->n_pages_created - buf_pool->n_pages_created_old) @@ -1841,13 +1852,14 @@ buf_print_io(void) / time_elapsed); if (buf_pool->n_page_gets > buf_pool->n_page_gets_old) { - printf("Buffer pool hit rate %lu / 1000\n", + buf += sprintf(buf, "Buffer pool hit rate %lu / 1000\n", 1000 - ((1000 * (buf_pool->n_pages_read - buf_pool->n_pages_read_old)) / (buf_pool->n_page_gets - buf_pool->n_page_gets_old))); } else { - printf("No buffer pool activity since the last printout\n"); + buf += sprintf(buf, + "No buffer pool activity since the last printout\n"); } buf_pool->n_page_gets_old = buf_pool->n_page_gets; |