Re: dentry_cache using up all my zone normal memory -- also seen on 2.6.14-rc2

Dipankar Sarma
2005-09-21T21:06:21Z

On Wed, Sep 21, 2005 at 02:59:30PM -0600, Christopher Friesen wrote:
> Sonny Rao wrote:
>
> >Over one million files open at once is just asking for trouble on a
> >lowmem-crippled x86 machine, IMHO.
>
> I don't think there actually are. I ran the testcase under strace, and
> it appears that there are two threads going at once.
>
> thread 1 spins doing the following:
> fd = creat("./rename14", 0666);
> unlink("./rename14");
> close(fd);
>
> thread 2 spins doing:
> rename("./rename14", "./rename14xyz");

Ewww.. Looks like a leak due to a race.

Does this happen on a non-nfs filesystem ?

Thanks
Dipankar