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asmout
Ketchup Master
58 Posts |
 Posted - Mar 08 2004 : 10:32:12 AM
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I am using VAX 1219 under VC6, and if I load a large project, I see an unexpected slowdown and high CPU usage when trying to select a symbol from the "symbols in workspace" drop-down.
Steps to Reproduce:
1) Open large project
2) Click on drop-down arrow of "symbold in workspace" list box of VA View
3) Move the cursor up and down the listbox. The movement of the highlight bar is sluggish, and the CPU usage (as monitored using task manager) is high (80-90%). |
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LarryLeonard
Tomato Guru
USA
1041 Posts |
Posted - Mar 08 2004 : 11:23:29 AM
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I'm seeing the same thing (also in VC6). For my large project (about 700 files), on my machine (P4-1.7GHz), it's not too bad, but I can imagine it being a pain on an even larger project, on an even slower machine.
The real issue to me is, what on Earth is the VAX code doing when the combobox item is highlighted? I can imagine work needing to be done when the item is selected (CBN_SELENDOK or whatever it's called), but when it's just highlighted? Whatever it is, maybe it can be cached, or postponed until the item is actually selected? Just rambling...
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asmout
Ketchup Master
58 Posts |
Posted - Mar 08 2004 : 6:27:15 PM
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My project is ~2000 files / 20Mb of code. Not huge, but enough to see quite a significant slowdown on my 2.4GHz P4.
My guess is that an inappropriate container for symbols is used, and VAX is trying to bring up a tool-tip using a linear search through an ordered list. The performance is much worse when the list is scrolled to the end. What is needed here is a std::map(symbol, tooltip)! Pure speculation, of couse... |
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asmout
Ketchup Master
58 Posts |
Posted - Mar 31 2004 : 6:03:01 PM
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| Still a bug in 1223. On a large project, makes the dropdown list quite useless. |
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