By C. J. Date
The former version of this ebook demonstrated itself because the such a lot whole and comprehensible therapy of the SQL usual more often than not to be had. Many adjustments have happened within the SQL criteria international considering that variation used to be released, in spite of the fact that: a tremendous new part, the Call-Level Interface (SQL/CLI), used to be further in 1995. one other significant new part, the power kept Modules function (SQL/PSM), is nearing finishing touch and is because of be additional to the normal in overdue 1996 or early 1997. the unique 1992 regular itself has been considerably replaced and corrected throughout the book of 2 large Technical Corrigenda, one in 1994 and one in 1996. All of those adjustments are mirrored during this Fourth version. previous versions of this e-book verified a practice of cautious, transparent, and exact clarification of advanced technical fabric. This re-creation keeps that culture.
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Additional resources for A Guide to the SQL Standard
Process-related tools are no exception to this. 2 summarizes the process-related information returned by several of these tools. 2. Process-Related Tools and the Information They Display Process ID Image Name Priority Class % CPU Time Handle Count % User Time % Priv Time Elapsed Time Part 1: Foundations 37 38 Part 1: Foundations Command Line Perfmon Pstat Pviewer Qslice 38 Part 1: Foundations Part 1: Foundations 39 TaskMgr TList Key Perfmon Counters Perfmon is an indispensable tool when working with processes.
Process-Related Tools and the Information They Display Process ID Image Name Priority Class % CPU Time Handle Count % User Time % Priv Time Elapsed Time Part 1: Foundations 37 38 Part 1: Foundations Command Line Perfmon Pstat Pviewer Qslice 38 Part 1: Foundations Part 1: Foundations 39 TaskMgr TList Key Perfmon Counters Perfmon is an indispensable tool when working with processes. 3 lists some of the more important process-related Perfmon counters. 3. Process-Related Perfmon Counters Counter Description Process:% Privileged Time The time the process has spent in kernel mode Process:% User Time The time the process has spent in user mode Process:% Processor Time The total processor time for the process; should be a sum of the first two counters and may exceed 100% on a multiprocessor machine Process:Elapsed Time The number of seconds that have passed since the process was created Process:ID Process Part 1: Foundations 39 40 Part 1: Foundations The internal ID for the process Process:Creating Process ID The internal ID of the process that created this one Process:Thread Count The number of threads the process currently contains Process:Handle Count The number of handles in the process-specific handle table Process Internals Each thread runs within the context of the process that owns it.
You can view these counters as lines on a chart, as literal values, or as bars on a histogram. You can save logs created by Perfmon as binary files, as delimited text files, and as SQL Server tables. Throughout the book, I'll mention Perfmon counters that are useful in exploring a particular technology or subsystem within Windows or SQL Server. WinDbg As I mentioned in the Introduction, we'll frequently use Microsoft's freely downloadable standalone debugger, WinDbg, to peer under the SQL Server hood.