RE: Very long startup time for a new thread

[Mikael Starvik]

Nope, no NPTL. Actually this system uses the pthread implementation in
uC-libc.

-----Original Message-----
From: Arjan van de Ven [mailto:arjan@xxxxxxxxxxxxx] 
Sent: Thursday, July 13, 2006 9:15 AM
To: Mikael Starvik
Cc: 'Linux Kernel Mailing List'
Subject: Re: Very long startup time for a new thread


On Thu, 2006-07-13 at 08:07 +0200, Mikael Starvik wrote:
> (This is on a 200 MIPS embedded architecture).
> 
> On a heavily loaded system (loadavg ~4) I create a new pthread. In this
> situation it takes ~4 seconds (!) before the thread is first scheduled in
> (yes, I have debug outputs in the scheduler to check that). In a 2.4 based
> system I don't see the same thing. I don't have any RT or FIFO tasks. Any
> ideas why it takes so long time and what I can do about it?

I assume you're using a new enough glibc that supports NPTL ?

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