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At least one indication of a memory shortage was seen in the following statistics: The average number of page replacement cycles per second (cycle/s) was 0.005. The number of page replacement cycles per second peaked at 0.05 from 14:10:02 to 14:20:03. Peak resource utilization statistics can be used to help understand performance problems. If performance was worst during the period of peak replacement cycle activity, then a shortage of physical memory may be performance bottleneck.
The average number of kernel threads waiting to be paged in (swpq-sz) was 1.52, which suggests a memory-poor condition. The average number of kernel threads waiting to be paged in (swpq-sz) peaked at 2.0 from 11:50:07 to 12:00:03. When the peak was reached, the swap queue was occupied 1 percent of the time. A more useful statistic is sometimes available by multiplying the swpq-sz data by the percent of time the queue was occupied. In this case, the average was 0.043 and the peak was 0.4 from 14:10:02 to 14:20:03. Peak resource utilization statistics can be used to help understand performance problems. If performance was worst when the number of kernel threads waiting to be paged in was at its peak, then a shortage of physical memory may be performance bottleneck. At multiple peak times ps -elf data indicated that there were 2 processes swapped out. This was the largest number of processes seen with ps -elf but it is not likely to be the absolute peak because the operating system does not store the true "high-water mark" for this statistic.
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