I’ve seen others comment that they’ve run into slow downs with API 2.<\/p>\n\n\n\n
I’ve been trying to sqeeze every last ounce from a large app and ran into this one. I’d suspected it might be a hit but measuring it indeed shows there is a hit – not tens of seconds but when you want EVERY last microsecond these few add up.<\/p>\n\n\n\n
My test code is the following<\/p>\n\n\n\n
Const kNumberOfIterations = 1000000\n\nDim startTime As Double\nDim endTime As Double\n\nstartTime = System.Microseconds\n\nFor i As Integer = 0 To kNumberOfIterations\n \n Dim s As String = Trim( \"abc\" + Str(i) + \"def\" )\n \nNext\n\nendTime = System.Microseconds\nSystem.debuglog \" elapsed 1 = \" + Str(endTime - startTime, \"###########0\")\n\nstartTime = System.Microseconds\n\nFor i As Integer = 0 To kNumberOfIterations\n \n Dim tmp As String = \"abc\" + Str(i) + \"def\"\n Dim s As String = tmp.Trim()\n \nNext\n\nendTime = System.Microseconds\nSystem.debuglog \" elapsed 2 = \" + Str(endTime - startTime, \"###########0\")\n<\/code><\/pre>\n\n\n\nPretty simple operations but when I run this compiled with default optimization (aggressive doesnt work in the app I’m building for reasons I have yet to discern) I get the following results<\/p>\n\n\n\n
Feb 11 22:22:52\u00a0 My Application[46161] <Warning>:\u00a0 elapsed 1 = 557024
Feb 11 22:22:52\u00a0 My Application[46161] <Warning>:\u00a0 elapsed 2 = 573987<\/p>\n\n\n\n
A different of roughly 20,000 microseconds (2 msec)<\/p>\n\n\n\n
In a small app that I can compile as aggressive this difference shrinks – but as I noted I cant use aggressive with my app yet.<\/p>\n\n\n\n
That API forces you to create & use more temporary variables can have an impact. Sticking with the API 1 equivalent _may_ save you time.<\/p>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
I’ve seen others comment that they’ve run into slow downs with API 2. I’ve been trying to sqeeze every last ounce from a large app and ran into this one. I’d suspected it might be a hit but measuring it indeed shows there is a hit – not tens of seconds but when you want … <\/p>\n