Avoid excessive disk writes by avoiding PHP errors in your code
Recently a client complained that their site has been suffering from slow downs that were not there before.
Upon investigating the history of resource utilization, we found that memory usage has increased, and at the same time, the load average has increased as well.
To cut a long story short, we found out that initially, the site had neither dblog nor syslog modules were enabled, and they were enabled before the issues started. They started when syslog was enabled.