Re: Tuning FreeBSD

2006-08-19 Thread Derek Ragona

You can just set the value in /boot/loader.conf such as:

kern.maxusers=50

and reboot

-Derek

At 03:35 PM 8/19/2006, Lisa Casey wrote:

Hi Folksm

I'm getting these on a FreeBSD 5.3 box:

Aug 19 15:46:32 radius sm-mta[12850]: k7JJk1rt012776: SYSERR(UID0): fill_fd:
disconnect: cannot open /dev/null:
 Too many open files in system
Aug 19 15:46:40 radius kernel: kern.maxfiles limit exceeded by uid 0, please
see tuning(7).
Aug 19 15:46:40 radius kernel: kern.maxfiles limit exceeded by uid 0, please
see tuning(7).
Aug 19 15:46:35 radius sm-mta[12784]: k7JJk7F0012784: SYSERR(UID0): queueup:
cannot create queue file ./qfk7JJk
7F0012784, euid=0, fd=-1, fp=0x0: Too many open files in system

I checked, and the system shows:

radius# sysctl kern.maxfiles
kern.maxfiles: 1416
radius# sysctl kern.maxusers
kern.maxusers: 43

I googled and read that kern.maxfiles is dependent upon kern.maxusers and
that I shou;d raise maxusers which I tried to do via sysctl:
radius# sysctl -w kern.maxusers=50
sysctl: oid 'kern.maxusers' is a read only tunable
sysctl: Tunable values are set in /boot/loader.conf

My /boot/loader.conf is a zero byte length file.

How can I fix this too many open files problem?

Thanks,

Lisa Casey

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Re: Tuning FreeBSD

2006-08-19 Thread Kris Kennaway
On Sat, Aug 19, 2006 at 04:35:29PM -0400, Lisa Casey wrote:
 Hi Folksm
 
 I'm getting these on a FreeBSD 5.3 box:
 
 Aug 19 15:46:32 radius sm-mta[12850]: k7JJk1rt012776: SYSERR(UID0): fill_fd:
 disconnect: cannot open /dev/null:
  Too many open files in system
 Aug 19 15:46:40 radius kernel: kern.maxfiles limit exceeded by uid 0, please
 see tuning(7).
 Aug 19 15:46:40 radius kernel: kern.maxfiles limit exceeded by uid 0, please
 see tuning(7).
 Aug 19 15:46:35 radius sm-mta[12784]: k7JJk7F0012784: SYSERR(UID0): queueup:
 cannot create queue file ./qfk7JJk
 7F0012784, euid=0, fd=-1, fp=0x0: Too many open files in system
 
 I checked, and the system shows:
 
 radius# sysctl kern.maxfiles
 kern.maxfiles: 1416
 radius# sysctl kern.maxusers
 kern.maxusers: 43
 
 I googled and read that kern.maxfiles is dependent upon kern.maxusers and
 that I shou;d raise maxusers which I tried to do via sysctl:
 radius# sysctl -w kern.maxusers=50
 sysctl: oid 'kern.maxusers' is a read only tunable
 sysctl: Tunable values are set in /boot/loader.conf
 
 My /boot/loader.conf is a zero byte length file.
 
 How can I fix this too many open files problem?

Edit loader.conf and make the specified change, then reboot.  See the
loader.conf manpage for more.

Kris


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Description: PGP signature


Re: Tuning FreeBSD

2006-08-19 Thread Daniel Gerzo
Hello Lisa,

Saturday, August 19, 2006, 10:35:29 PM, you wrote:

 Hi Folksm

 I'm getting these on a FreeBSD 5.3 box:

 Aug 19 15:46:32 radius sm-mta[12850]: k7JJk1rt012776: SYSERR(UID0): fill_fd:
 disconnect: cannot open /dev/null:
  Too many open files in system
 Aug 19 15:46:40 radius kernel: kern.maxfiles limit exceeded by uid 0, please
 see tuning(7).
 Aug 19 15:46:40 radius kernel: kern.maxfiles limit exceeded by uid 0, please
 see tuning(7).
 Aug 19 15:46:35 radius sm-mta[12784]: k7JJk7F0012784: SYSERR(UID0): queueup:
 cannot create queue file ./qfk7JJk
 7F0012784, euid=0, fd=-1, fp=0x0: Too many open files in system

 I checked, and the system shows:

 radius# sysctl kern.maxfiles
 kern.maxfiles: 1416
 radius# sysctl kern.maxusers
 kern.maxusers: 43

 I googled and read that kern.maxfiles is dependent upon kern.maxusers and
 that I shou;d raise maxusers which I tried to do via sysctl:

I don't think that this is really required. Just raise the
kern.maxfiles sysctl if you really need to do so.

I would rather search for the reason why I need to allow kernel to
open such many number of files. Allowing it to open too many files
can lead to a Denial of Service.

 radius# sysctl -w kern.maxusers=50
 sysctl: oid 'kern.maxusers' is a read only tunable
 sysctl: Tunable values are set in /boot/loader.conf

 My /boot/loader.conf is a zero byte length file.

That is not problem. There is no /boot/loader.conf by default (IIRC)
although there is /boot/defaults/loader.conf

 How can I fix this too many open files problem?

 Thanks,

 Lisa Casey

-- 
Best regards,
 Danielmailto:[EMAIL PROTECTED]

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Re: Tuning FreeBSD

2006-08-19 Thread Lisa Casey
Thanks. I set kern.maxusers in loader.conf and that seems to have helped. I
hated seeing stuff like that on a weekend!

Lisa Casey

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Re: Tuning FreeBSD for HIGH PERFORMANCE Web Server

2003-07-14 Thread Vulpes Velox
Check out /etc/make.conf choose the closest arc for your proc and go with either
O2 or O3 optimizations.

When using O3 you may end up with a few problems. I have had a bit of problems
compiling some things when I optimized some X stuff using O3. I have not had any
problems with O2 so far.

On 14 Jul 2003 23:25:04 +0800
Edy Lie [EMAIL PROTECTED] wrote:

 Is there any cool tips to fine tune FreeBSD so that it performs well for
 Web server environment ?
 
 Like enabling Keep Alive (which is by default), shorten the time_wait ?
 
 
 -- 
 In the windoze world, I am limited by the tools that I can use, In Unix,
 I am limited by my own wisdom.
 
 
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Re: Tuning FreeBSD for HIGH PERFORMANCE Web Server

2003-07-14 Thread Jonathan Chen
On Mon, Jul 14, 2003 at 12:00:22PM -0500, Vulpes Velox wrote:
 Check out /etc/make.conf choose the closest arc for your proc and go with either
 O2 or O3 optimizations.
 
 When using O3 you may end up with a few problems. I have had a bit of problems
 compiling some things when I optimized some X stuff using O3. I have not had any
 problems with O2 so far.
 

Compiler options are not a good alternative as tips from the tuning(7)
man page. Even more importantly, -O3 compile options can generate bad
code.
-- 
Jonathan Chen [EMAIL PROTECTED]

We laugh in the face of danger, we drop icecubes down the vest of fear
 - Edmond Blackadder III
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