On Fri, Dec 17, 2010 at 7:29 PM, Richard Hipp wrote:
>
> For certain full-text search queries against a large database, we are
> seeing
> speeds which are 3x faster when using "-heap 300M" (the memsys5 memory
> allocator) versus omitting the -heap option and thus using system malloc().
> This is
Hi,
Windows malloc is slow. There is nothing you can do about it.
I have seen huge difference in the same code running on Linux vs Windows
(Code
which mostly do malloc/realloc/free).
I am using google perftools (http://code.google.com/p/google-perftools/)
to accelerate malloc.
Actually, I am usin
On Sat, Dec 18, 2010 at 7:29 AM, Marcus Grimm wrote:
> Interesting. Thanks for pointing to this.
> Please note that this reference is 9 years old, we observed
> that problem by moving to VS2008, not in older versions.
> Anyway, I agree that this threshold issue is wierd -
> Microsoft silently turn
sers-boun...@sqlite.org
> [mailto:sqlite-users-boun...@sqlite.org]
> On Behalf Of Marcus Grimm
> Sent: Saturday, December 18, 2010 5:31 AM
> To: General Discussion of SQLite Database
> Subject: EXTERNAL:Re: [sqlite] Windows performance problems associated
> with
> malloc()
>
Grimm
>> Sent: Friday, December 17, 2010 9:21 AM
>> To: General Discussion of SQLite Database
>> Subject: Re: [sqlite] Windows performance problems associated with
>> malloc()
>>
>>> An SQLite user has brought to our attention a performance issue in
&g
On Fri, Dec 17, 2010 at 7:29 PM, Richard Hipp wrote:
> If you have any large queries that you can run on windows using the
> command-line shell, I would appreciate you timing those queries using the
> new shells from the download page, both with "-heap 300M" and without it,
> and letting me know
This is low probability, but maybe the Fault Tolerant Heap is turned on for
sqlite.exe?
I believe you'll see the exe mentioned in here if that is the case:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\FTH\State
FTH was introduced in Windows 7.
Ben
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sqlite-
On Fri, Dec 17, 2010 at 12:21 PM, Marcus Grimm wrote:
>
> I'm unable to run your sqlite3.exe: MSVCR100.dll no found.
>
I have uploaded new executables, built in such a way (I hope) that no longer
requires MSVCR100.dll. Please try again and let me know if the new binaries
work.
Thanks to all who
lite-users-boun...@sqlite.org
> [mailto:sqlite-users-boun...@sqlite.org] On Behalf Of Marcus Grimm
> Sent: Friday, December 17, 2010 9:21 AM
> To: General Discussion of SQLite Database
> Subject: Re: [sqlite] Windows performance problems associated with malloc()
>
>> An SQLite user h
-boun...@sqlite.org] On Behalf Of Marcus Grimm
Sent: Friday, December 17, 2010 9:21 AM
To: General Discussion of SQLite Database
Subject: Re: [sqlite] Windows performance problems associated with malloc()
> An SQLite user has brought to our attention a performance issue in
> SQLite that
Quoth Richard Hipp , on 2010-12-17 15:12:58 -0500:
> Can somebody with windows-foo please explain to me what I need to do to
> vs2010 so that it generates exe file that doe not depend on non-standard
> DLLs?
AFAIK, the platform-approved solution is to distribute the C runtime
library with your app
On Fri, Dec 17, 2010 at 3:12 PM, Richard Hipp wrote:
> On Fri, Dec 17, 2010 at 2:27 PM, John Drescher wrote:
>
>> >
>> > I'm unable to run your sqlite3.exe: MSVCR100.dll no found.
>> >
>> That is visual studio 2010 runtime.
>>
>
> Can somebody with windows-foo please explain to me what I need to
On 12/17/2010 3:12 PM, Richard Hipp wrote:
> Can somebody with windows-foo please explain to me what I need to do to
> vs2010 so that it generates exe file that doe not depend on non-standard
> DLLs?
If you are building from the command line, specify /MT (/MTd for debug
builds) in place of /MD (/
On Fri, Dec 17, 2010 at 2:27 PM, John Drescher wrote:
> >
> > I'm unable to run your sqlite3.exe: MSVCR100.dll no found.
> >
> That is visual studio 2010 runtime.
>
Can somebody with windows-foo please explain to me what I need to do to
vs2010 so that it generates exe file that doe not depend on
>
> I'm unable to run your sqlite3.exe: MSVCR100.dll no found.
>
That is visual studio 2010 runtime.
John
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On Fri, Dec 17, 2010 at 8:29 AM, Richard Hipp wrote:
> I also observe that compiling for 64-bit using vs2010 (not an option with my
> ancient version 2.95.3 gcc cross-compiler) that the queries are an
> additional 2x faster. I was surprised at the dramatic performance increase
> in going from 32-
From: "Richard Hipp"
To: "General Discussion of SQLite Database" ;
Sent: Friday, December 17, 2010 5:29 PM
Subject: [sqlite] Windows performance problems associated with malloc()
> An SQLite user has brought to our attention a performance issue in SQLite
> that s
> An SQLite user has brought to our attention a performance issue in SQLite
> that seems to be associated with malloc(). If you have insights or
> corroborating experience with this issue please let me know.
We recently had a malloc/free slowdown issue after
changing to VS2008 in combination wit
An SQLite user has brought to our attention a performance issue in SQLite
that seems to be associated with malloc(). If you have insights or
corroborating experience with this issue please let me know.
SQLite supports a "zero-malloc option" (see
http://www.sqlite.org/malloc.html#memsys5 for deta
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