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Fixed lp:859051 "Periodic aria checkpoints prevent power management"

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Now the aria_log_control_file and log file is not touched if aria files are not written to.

storage/maria/ma_checkpoint.c:
  Fixed wrong test if log file has increased.
  Don't reset pages_to_flush_before_next_checkpoint as this would cause the checkpoint to happen at next checkpoint interval
This commit is contained in:
Michael Widenius 2011-10-05 15:59:49 +03:00
parent fac1a8110a
commit 5c3e18fe0e
1 changed files with 7 additions and 5 deletions
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12
storage/maria/ma_checkpoint.c
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@ -596,15 +596,17 @@ pthread_handler_t ma_checkpoint_background(void *arg)
want to checkpoint every minute, hence the positive
maria_checkpoint_min_activity.
*/
if (horizon != log_horizon_at_last_checkpoint &&
(ulonglong) (horizon - log_horizon_at_last_checkpoint) <=
if ((ulonglong) (horizon - log_horizon_at_last_checkpoint) <=
maria_checkpoint_min_log_activity &&
((ulonglong) (maria_pagecache->global_cache_write -
pagecache_flushes_at_last_checkpoint) *
maria_pagecache->block_size) <= maria_checkpoint_min_cache_activity)
maria_pagecache->block_size) <=
maria_checkpoint_min_cache_activity)
{
/* don't take checkpoint, so don't know what to flush */
pages_to_flush_before_next_checkpoint= 0;
/*
Not enough has happend since last checkpoint.
Sleep for a while and try again later
*/
sleep_time= interval;
break;
}