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Date:      Sun, 25 Jan 2004 12:24:27 -0800 (PST)
From:      Doug White <dwhite@gumbysoft.com>
To:        "Christian B." <freebsd.org@bimmer.at>
Cc:        freebsd-current@freebsd.org
Subject:   Re: FreeBSD 5.2: malloc(): error: allocation failed
Message-ID:  <20040125122226.J81485@carver.gumbysoft.com>
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On Sun, 25 Jan 2004, Christian B. wrote:

> First, I have FreeBSD 5.1 installed on my dual-Xeon machine with 2GB RAM.
> Now, I delete the disk and installed FreeBSD 5.2 with the same ports and
> configuration.

Hm, you haven't been adjusting MAXDSIZ, have you? I've been getting this
exact same error sequence when I set MAXDSIZ so big there was no space
left for mmap() to work.  In that case I was setting it to near 3GB.

Are you setting any tuning option in loader.conf or with a custom kernel
configuration?

>
> For the MySQL 4.0.17, I use following configuration (the same as under
> FreeBSD 5.1):
> ----------------------------------
> key_buffer = 256M
> max_allowed_packet = 1M
> table_cache = 256
> sort_buffer_size = 1M
> read_buffer_size = 1M
> myisam_sort_buffer_size = 64M
> thread_cache = 8
> query_cache_size= 16M
> thread_concurrency = 4
> max_connections = 2000
> ----------------------------------
>
> But after I start the mysql-server, I get following error:
> ----------------------------------
> mysqld in malloc(): error: allocation failed
> mysqld got signal 6;
> This could be because you hit a bug. It is also possible that this binary
> or one of the libraries it was linked against is corrupt, improperly built,
> or misconfigured. This error can also be caused by malfunctioning hardware.
> We will try our best to scrape up some info that will hopefully help
> diagnose
> the problem, but since we have already crashed, something is definitely
> wrong
> and this may fail.
>
> key_buffer_size=268435456
> read_buffer_size=1044480
> max_used_connections=0
> max_connections=2000
> threads_connected=0
> It is possible that mysqld could use up to
> key_buffer_size + (read_buffer_size + sort_buffer_size)*max_connections =
> 155824
>  K
> bytes of memory
> Hope that's ok; if not, decrease some variables in the equation.
> ----------------------------------
>
> If I reduce the key_buffer to 128M, mysql starts normal.
>
>
> So, I installed the Port "Memtest". But if I run it with more than 511MB
> ("memtest 512M 1"), I get the following error:
> ----------------------------------
> Current limits:
>   RLIMIT_RSS  0xffffffff
>   RLIMIT_VMEM 0xffffffff
> Raising limits...
> memtest in malloc(): error: allocation failed
> Abort (core dumped)
> ----------------------------------
>
> The output from top:
> ----------------------------------
> 61 processes:  3 running, 48 sleeping, 10 waiting
> Mem: 76M Active, 12M Inact, 47M Wired, 16K Cache, 21M Buf, 1872M Free
> Swap: 5120M Total, 5120M Free
> ----------------------------------
>
>
> I read the whole documentation about FreeBSD 5.2-update, but I cannot find
> any changes about the memory-functions.
>
> Can anyone say me, why I have problems with memory-allocation?
>
> Thanks for your help!
>
> Best regards,
> Christian
>
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>

-- 
Doug White                    |  FreeBSD: The Power to Serve
dwhite@gumbysoft.com          |  www.FreeBSD.org



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