97 строки
2.5 KiB
Tcl
97 строки
2.5 KiB
Tcl
#!/bin/tclsh
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#
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# SUMMARY:
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# Run this script in the same directory as the "vdbe_profile.out" file.
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# This script summarizes the results contained in that file.
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#
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# DETAILS:
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# Compile SQLite using the -DVDBE_PROFILE option on Linux. This causes
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# performance information about individual VDBE operations to be appended
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# to the "vdbe_profile.out" file. After content has been accumulated in
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# vdbe_profile.out, run this script to analyze the output and generate a
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# report.
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#
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if {![file readable vdbe_profile.out]} {
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error "run this script in the same directory as the vdbe_profile.out file"
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}
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set in [open vdbe_profile.out r]
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set stmt {}
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set allstmt {}
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while {![eof $in]} {
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set line [gets $in]
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if {$line==""} continue
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if {[regexp {^---- } $line]} {
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set stmt [lindex $line 1]
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if {[info exists cnt($stmt)]} {
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incr cnt($stmt)
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set firsttime 0
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} else {
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set cnt($stmt) 1
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set sql($stmt) {}
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set firsttime 1
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lappend allstmt $stmt
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}
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continue;
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}
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if {[regexp {^-- } $line]} {
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if {$firsttime} {
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append sql($stmt) [string range $line 3 end]\n
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}
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continue
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}
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if {![regexp {^ *\d+ *\d+ *\d+ *\d+ ([A-Z].*)} $line all detail]} continue
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set c [lindex $line 0]
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set t [lindex $line 1]
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set addr [lindex $line 3]
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set op [lindex $line 4]
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if {[info exists opcnt($op)]} {
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incr opcnt($op) $c
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incr opcycle($op) $t
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} else {
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set opcnt($op) $c
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set opcycle($op) $t
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}
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if {[info exists stat($stmt,$addr)]} {
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foreach {cx tx detail} $stat($stmt,$addr) break
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incr cx $c
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incr tx $t
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set stat($stmt,$addr) [list $cx $tx $detail]
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} else {
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set stat($stmt,$addr) [list $c $t $detail]
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}
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}
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close $in
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foreach stmt $allstmt {
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puts "********************************************************************"
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puts [string trim $sql($stmt)]
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puts "Execution count: $cnt($stmt)"
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set tcx 0
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set ttx 0
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for {set i 0} {[info exists stat($stmt,$i)]} {incr i} {
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foreach {cx tx detail} $stat($stmt,$i) break
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if {$cx==0} {
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set ax 0
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} else {
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set ax [expr {$tx/$cx}]
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}
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puts [format {%8d %12d %12d %4d %s} $cx $tx $ax $i $detail]
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incr tcx $cx
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incr ttx $tx
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}
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set tax [expr {$tcx>0?$ttx/$tcx:0}]
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puts [format {%8d %12d %12d TOTAL} $tcx $ttx $tax]
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}
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puts "********************************************************************"
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puts "OPCODES:"
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foreach op [lsort [array names opcnt]] {
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set cx $opcnt($op)
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set tx $opcycle($op)
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if {$cx==0} {
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set ax 0
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} else {
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set ax [expr {$tx/$cx}]
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}
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puts [format {%8d %12d %12d %s} $cx $tx $ax $op]
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}
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