Re: [Xen-devel] [RFC PATCH] xs: use system's default stack size for xs_watch's reader thread

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Wed, Sep 21, 2016 at 08:51:07AM -0400, Konrad Rzeszutek Wilk wrote:
> On Tue, Sep 20, 2016 at 05:29:39PM -0400, Chris Patterson wrote:
> > From: Chris Patterson <pattersonc@xxxxxxxxxxxx>
> > 
> > xs_watch() creates a thread to listen to xenstore events.  Currently, the
> > thread is created with the greater of 16K or PTHREAD_MIN_SIZE.
> > 
> > There have been several bug reports and workarounds related to the issue
> > where xs_watch() fails because its attempt to create the reader thread with
> > pthread_create() fails. This is due to insufficient stack space size
> > given the requirements for thread-local storage usage in the applications
> > and libraries that are linked against libxenstore.  [1,2,3,4].
> > 
> > Specifying the stack size appears to have been added to reduce memory
> > footprint (1d00c73b983b09fbee4d9dc0f58f6663c361c345).
> 
> Ugh. 8MB.

OOI isn't that 8MB virtual memory, which means it shouldn't have real
impact unless it is used?

Wei.

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