[launchd-dev] resource limits

[Dave Zarzycki]

Syntactically, what you added to your property list is correct. The  
bug in launchd (fixed in Leopard) is difficult to explain. I think the  
most pragmatic thing to do on a Tiger based system is to do is wrap  
the daemon in a quick shell script and have it adjust the resource  
limit you want. For example:

#!/bin/sh

ulimit -c 0

exec /usr/sbin/serverd




davez



On Jul 9, 2007, at 1:38 PM, Greg Dingle wrote:

> No, sorry, can't wait until Leopard. I want to use the resource  
> limits for a program currently running on a production server.
>
> What is thing that is easily confused? I have tried both soft/hard  
> limits -- that is not what you mean, is it? Is the implementation  
> actually broken? I thought somebody here could just clarify the form  
> for setting the limits.
>
> Greg
>
> On 9-Jul-07, at 1:28 PM, Dave Zarzycki wrote:
>
>> Sadly, in retrospect, it looks like the soft/hard limit code in  
>> Tiger (not Leopard) contains an easily confusable implementation.  
>> Can you wait until Leopard?
>>
>> davez
>>
>>
>> On Jul 9, 2007, at 11:00 AM, Greg Dingle wrote:
>>
>>> The build is 10.4.10.
>>>
>>> On 9-Jul-07, at 9:20 AM, Dave Zarzycki wrote:
>>>
>>>> Which build of the OS?
>>>>
>>>>
>>>> On Jul 7, 2007, at 4:16 PM, Greg Dingle wrote:
>>>>
>>>>> Hi, I'm just trying to get the resource limits working with  
>>>>> launchd and a plist. Whatever I try I get a segmentation fault.
>>>>>
>>>>> I've tried with an empty dict:
>>>>>
>>>>> <?xml version="1.0" encoding="UTF-8"?>
>>>>> <!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd 
>>>>> ">
>>>>> <plist version="1.0">
>>>>> <dict>
>>>>> 	<key>Label</key>
>>>>> 	<string>TEST</string>
>>>>> 	<key>OnDemand</key>
>>>>> 	<false/>
>>>>> 	<key>ProgramArguments</key>
>>>>> 	<array>
>>>>> 		<string>/bin/ls</string>
>>>>> 	</array>
>>>>> 	
>>>>>  <key>SoftResourceLimits</key>
>>>>>  <dict>
>>>>>  </dict>
>>>>> 	
>>>>> </dict>
>>>>> </plist>
>>>>>
>>>>> And also with some dummy values:
>>>>>
>>>>> <?xml version="1.0" encoding="UTF-8"?>
>>>>> <!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd 
>>>>> ">
>>>>> <plist version="1.0">
>>>>> <dict>
>>>>> 	<key>Label</key>
>>>>> 	<string>TEST</string>
>>>>> 	<key>OnDemand</key>
>>>>> 	<false/>
>>>>> 	<key>ProgramArguments</key>
>>>>> 	<array>
>>>>> 		<string>/bin/ls</string>
>>>>> 	</array>
>>>>> 	
>>>>>  <key>SoftResourceLimits</key>
>>>>>  <dict>
>>>>>          <key>Core</key>
>>>>>          <integer>10000000000</integer>
>>>>>
>>>>>          <key>CPU</key>
>>>>>          <integer>10000000000</integer>
>>>>>
>>>>>          <key>Data</key>
>>>>>          <integer>10000000000</integer>
>>>>>
>>>>>          <key>FileSize</key>
>>>>>          <integer>10000000000</integer>
>>>>>
>>>>>          <key>MemoryLock</key>
>>>>>          <integer>10000000000</integer>
>>>>>
>>>>>          <key>NumberOfFiles</key>
>>>>>          <integer>8192</integer>
>>>>>
>>>>>          <key>NumberofProcesses</key>
>>>>>          <integer>150</integer>
>>>>>
>>>>>          <key>ResidentSetSize</key>
>>>>>          <integer>100000000</integer>
>>>>>
>>>>>          <key>Stack</key>
>>>>>          <integer>10000</integer>
>>>>>  </dict>
>>>>> 	
>>>>> </dict>
>>>>> </plist>
>>>>>
>>>>> Do I at least have the format correct? I couldn't find any  
>>>>> examples with google to work from.
>>>>>
>>>>> Cheers,
>>>>>
>>>>> Greeg
>>>>>
>>>>> _______________________________________________
>>>>> launchd-dev mailing list
>>>>> launchd-dev at lists.macosforge.org
>>>>> http://lists.macosforge.org/mailman/listinfo/launchd-dev
>>>>
>>>
>>
>