Any known memory leak issues in handling SIGEV threads in Linux?

[Sowmya Sridharan]

Hi All,

In a stable system with 2.6.14 kernel, which continuously sends/receive 
packets, I noticed an increase in slab size of around 1.5GB in 30 hours. 
I see a continuous increase in number of task_struct and size-16384(thread 
info) object.

I use an application that uses SIGEV timer thread with time-out of 20 
millisecs. Each time, upon expiry of SIGEV timer(20 millisecs), a thread 
start routine will run "as if" it were a new thread, to process the 
packets in the system.

Whenever the application is killed/restarted, all the task_struct objects 
are getting released.

1. Is there any known issue in 2.6.14 kernel for handling SIGEV timer 
thread ?
2.Will there be any issue in 2.6.14 kernel, in clean up of task_struct for 
application that creates/deletes threads at a rate of 20 millisec?

Thread creation/deletion  are handled properly in the application. Still I 
am unable to figure out reason for memory leak.

Appreciate your inputs.

Thanks,
Sowmya
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