In a detailed troubleshooting series for MySQL DBAs , the value is captured during a pt-stalk data collection event. It appears in the free column of the vmstat (virtual memory statistics) output, indicating that the server had approximately 122 MB of physical memory immediately available for allocation. Understanding the Log Context
The number frequently appears in technical performance logs, specifically in vmstat output for Linux systems, representing free memory (typically in kilobytes) at a specific point in time. 122064
: Seeing 122,064 KB free on a high-performance database server can be a warning sign. While Linux prefers to use "free" RAM for caching, a sudden drop toward this level often precedes swap activity , which can drastically slow down database queries. In a detailed troubleshooting series for MySQL DBAs
For system administrators and developers, "122064" represents the importance of . : Seeing 122,064 KB free on a high-performance
: In the specific trace where this number appears, it is analyzed alongside diskstats (disk I/O) and innodb transaction logs to see if memory pressure is causing threads to wait. Broader Context: Why Numbers Like This Matter
When a tool like pt-stalk or pt-sift captures this value, it isn't just a random number; it's a diagnostic snapshot used to identify "blockers" or resource contention.