On Wed, Sep 6, 2017 at 7:54 AM, Jonny Grant <address@hidden> wrote:
On 15/08/17 12:45, Dmitry V. Levin wrote:
On Tue, Aug 15, 2017 at 08:19:13AM +0100, Jonny Grant wrote:
On 15/08/17 00:50, Paul Eggert wrote:
Jonny Grant wrote:
do you know which kernel API has this limitation?
All kernels have a limitation there to some extent, except perhaps the
Hurd. Sorry, I don't know what the limits are.
Ok thank you.
I imagine kernels just need a dynamic API, so it doesn't need to be a
fixed buffer.
It's a security limit rather than a fixed buffer, see e.g.
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=da029c11e6b12f321f36dac8771e833b65cec962
Thank you for your reply.
My Ubuntu 16.04 limit is 2MB it seems:
$ getconf ARG_MAX
2097152
This laptop has 16GB RAM, so it is a shame it isn't much bigger, or dynamic
so can be expanded when needed somehow. Those mapped pages of RAM wouldn't
be wasted, as just VM right?
I imagine a lot of people may have 60,000 files in a directory like me these
days. Latest Linux kernel just added support for billions of files per
directory I read.
If this is a strict requirement, you could switch to Hurd. I checked
with a Hurd developer(?) some time ago and one of their design
philosophies is no artificial limits.
I wasn't able to find an actual citation for this behavior, sadly.
R0b0t1.