Hi Matevz,
Look in limits.conf most often in /etc/security but sometimes in /etc
itself.
Andy
On Tue, 2 Dec 2014, Matevz Tadel wrote:
> Hi Andy,
>
> Yes ... and I have no clue where this unlimited is coming from, I tried doing
> my best to set it to something more reasonable :) I'm running on one of our
> test VMs, centos 6.5. It's one of the "shared root" machines with ipv6
> address so chaoss reigns there.
>
> Thanks for adding the checks against this.
>
> Matevz
>
> On 12/02/14 07:40, Andrew Hanushevsky wrote:
>> Hi Matevz,
>>
>> OK, so you get
>>
>>>>> Max processes unlimited unlimited
>>>>> processes ### <------ this
>>
>>>>> [1509] root@cabinet-10-10-11 /var/log/xrootd# sudo -u xrootd bash -c
>>>>> "ulimit
>>>>> -a"
>>>>> max user processes (-u) 8192
>>
>> While I get
>> Max processes 127401 127401 processes
>> ulimit -a
>> max user processes (-u) 1024
>>
>> So, it's obvious you specified "-1" for the hard process limit (and maybe
>> more)
>> but that doesn't cut it because Linux infinity doesn't work in practice for
>> many
>> things (there is always a limit for all practical purposes) and we'd like
>> to
>> know what that really is to not over-run the system.
>>
>> I suppose I can check for -1 but then I don't know what the practical
>> internal
>> limit has to be set to except for some extremely large value.
>>
>>>>> Any ideas what else to check / change?
>> Yes, while -1 is a valid specfication for most hard limits it's best not to
>> specify it. Use some good reasonble number or you're likely to run into
>> trouble.
>>
>> This is the code that does this check:
>>>>>
>>>>> https://github.com/xrootd/xrootd/blob/master/src/Xrd/XrdConfig.cc#L855
>> Actually, all that code does is display the limit the the XrdScheduler
>> constructor used (actually set to). That's where the problem occurs.
>>
>> Andy
>>
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