Real load Balancing using $ps->loadavg(pid list) below. The tmscutime field contains the sum of the tmsutime and tmscutime values for all waited-for terminated children. The tmscstime field contains the sum of the tmsstime and tmscstime values for all waited-for terminated. The tmsstime field contains the CPU time spent in the system while executing tasks on behalf of the calling process. The tmsstime field contains the CPU time spent in the system while executing tasks on behalf of the calling process. This module reads /proc/uptime and /proc//stat to gather statistics and calculate cpu utilization of designatated PID's with or without childrenĪll the data from /proc//stat is returned attached to the method pointer, see list below by index (-1).Ĭalculate realtime load average of a particular job(pid) or list of job(pid's) The tmsutime field contains the CPU time spent executing instructions of the calling process. My $percent = $ps->loadkid($pid0,$pid1.) DESCRIPTION My $percent = $prep->loadavg($pid0,$pid1.) This new information should be extremely useful for troubleshooting refresh failures that are caused by excessive memory consumption. I know cmd: sysconf (SCCLKTCK) to get clock ticks by C (Hertz (number of clock ticks per second). It’s important to note that this value may not be entirely accurate since the memory usage values, and therefore the peaks, are captured asynchronously so there could be higher peaks that are not detected. utime and stime are in CPU clock ticks, not seconds. MashupPeakMemory shows the maximum amount of memory used during the refresh operation by just the Power Query engine across all query evaluations.This value will always be less than the value shown in the CPUTime column in the upper pane. MashupCPUTime shows the total amount of CPU used by the Power Query engine for all Power Query queries used to import data into the dataset.This includes memory used by the Analysis Services engine and the Power Query engine. PeakMemory shows the maximum amount of memory used during the refresh operation.In the lower pane where the TMSL for the refresh operation is shown – this is the text from the TextData column – underneath the TMSL there are three new values shown: This is not new, and I wrote about the CPUTime column last year here. In the upper pane, the Duration column tells you how long the refresh took in milliseconds and the CPUTime column tells you how much CPU was used by both the Analysis Services engine and the Power Query engine during the refresh. Here’s what Profiler shows for the Command End event: Using the same dataset from my previous post, I ran a Profiler trace on the workspace and captured the Command Begin and Command End events while I refreshed the dataset. What I didn’t notice when I wrote that post is that there is also now information available in Profiler and Log Analytics that tells you about peak memory and CPU usage across all Power Query queries for a single refresh in the Power BI Service, as well as memory usage for the refresh as a whole. stime CPU time spent in kernel code, measured in clock ticks lasttimes is the previous 'time' lp->utime + lp->stime (in clock ticks) Lastly the time units used in this computations relies on jiffies, see man 7 time for more information. In that post I pointed out that Profiler and Log Analytics now gives you information on the CPU and memory used by an individual Power Query query when importing data into Power BI. This post is a follow-up to my recent post on identifying CPU and memory-intensive Power Query queries in Power BI.
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