From your description below, you probably have a loop that results in a
large amount of allocated memory (i.e. one heap gets extended to eat up the
rest of the VM), and then a different heap (IIS/DLLHost may have 30+ heaps)
needs to extend but can't so even though you aren't technically fragmented,
you are out of VM space so the extension fails.
Pat
"Ronald" <> wrote in message
news:lRyXd.82609$...
> Windows 2000 Advanced Server with latest updates.
>
> I noticed the problem occurs at 'some' point at once. For days de virtual
> bytes remains below 100mb and then suddenly it hits 2gb. So it seems this
> is not caused by a 'small' memory leak.
>
> What (except redim in loops) cause memoryfragmentation?
>
> regards,
>
> Ronald
>
> "Pat [MSFT]" <> wrote in message
> news:%...
>> What you are describing is memory fragmentation; it is commonly caused by
>> small memory leaks. What OS are you running?
>> "Ronald" <> wrote in message
>> news:GJWWd.306478$. ..
>>> Hi!
>>>
>>> As I ran in to errors like "Ran out of memory" and "Out of memory" I
>>> supposed my website might have memoryleaks. To trace a potential memory
>>> leak I isolated the IIS process and monitored the 'Virtual Bytes' and
>>> 'Private Bytes' for a while.
>>>
>>> I noticed the private bytes stays 'low' all the time. Sometimes a bit
>>> up, sometimes a bit down. Virtual bytes also follows the same pattern
>>> for most times. But, sometimes it increases to almost 2gb en stays
>>> there.
>>>
>>> I've been reading for memory leaks an aggressive caching and stuff and
>>> was wondering when there is a memory leak. In short: what does it mean
>>> thet the amount of virtual bytes stays high? Is this probably due to
>>> caching or....?
>>>
>>> regards,
>>>
>>> Ronald
>>>
>>
>>
>
>
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