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Robert Houdart
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 Posted: Wed May 04, 2005 10:24 am Post subject: MM Replay Log Analysis Tool |
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Hi all,
I've uploaded (attachments section) a small tool to analyse the contents of
a Memory Usage Replay log. It shows the size distribution of the memory
allocations and their impact on the over-all memory usage (average and
peak).
Compile, click the "Analysis" button, and select the replay log file.
Robert
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Eric Grange
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| Posted: Wed May 04, 2005 1:05 pm Post subject: Re: MM Replay Log Analysis Tool |
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Nice tool!
What is the exact meaning of the 4 options at the top?
Eric
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Robert Houdart
Guest
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| Posted: Wed May 04, 2005 1:19 pm Post subject: Re: MM Replay Log Analysis Tool |
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| Quote: | What is the exact meaning of the 4 options at the top?
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1) Nominal = use the nominal requested size
2) 4-byte aligned = requests are rounded up to 4-byte multiple
3) 16-byte aligned = requests are rounded up to 16-byte multiple
4) +4 and 16-byte = add 4 bytes overhead, then round up to 16-byte multiple
Method 3) is used by FastMM, RecyclerMM, PSDMM etc.
Method 4) is used by BucketMM and probably NexusMM .
The results show the following for each individual memory size:
- Avg. Count = average number of blocks used
- Avg. Mem = average memory used
- Peak Mem = peak memory used
- Allocations = total number of allocations
- Avg. size = average size of the requests
Robert
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Eric Grange
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| Posted: Wed May 04, 2005 2:08 pm Post subject: Re: MM Replay Log Analysis Tool |
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Ok thanks!
In a further revision, would it be possible to have some reallocations
stats? Like a number of times reallocated from size-range, and number
of times reallocated to size-range, f.i. it allocates 16 bytes
and then reallocs a first time to 24, and then a second time to 32,
you would have something like:
Realloc From Realloc To
-16 1 0
17-32 1 2
Give them a hand, they'll want the whole arm ;)
Eruic
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Robert Houdart
Guest
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| Posted: Wed May 04, 2005 6:15 pm Post subject: Re: MM Replay Log Analysis Tool |
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Hi,
v2 uploaded to attachments section with new features:
- ReallocFrom and ReallocTo shown (need a wide screen)
- New alignment option: +1 byte overhead, rounded up to 8-byte multiple
Curiously the memory usage of the (+1, 8-byte aligment) is quite similar to
the 16-byte alignment.
Robert
"Eric Grange" <egrangeNO (AT) SPAMglscene (DOT) org> wrote in message...
| Quote: | In a further revision, would it be possible to have some reallocations
stats? Like a number of times reallocated from size-range, and number
of times reallocated to size-range, f.i. it allocates 16 bytes
and then reallocs a first time to 24, and then a second time to 32,
you would have something like:
Realloc From Realloc To
-16 1 0
17-32 1 2
Give them a hand, they'll want the whole arm ;)
Eruic
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