On Wed, Nov 20, 2024 at 04:06:08PM +0300, Leonid Evdokimov wrote:
> On Tue, Nov 19, 2024 at 8:05 PM Ercolino de Spiacico
> <bellocar...@hotmail.com> wrote:
> > If given the possibility, I would be very happy to map a file in RAM
> > knowing that
> > this is handled differently from the "standard" conf-file.
>
> I agree with this point and I'm developing libddt (dense domain table)
> that is basically a mmap()'able tire representing a list of domains.
> The data structure resembles the one libpsl uses to store
> publicsuffix.org database.
>
> Preliminary results for a test-case of 500k domains were ~2 MiB of RAM
> usage and sub-10ms resolution latency.
>
> However, I got no replies for my call-for-test-cases[1] a few months
> ago, so I moved my focus to other sub-projects of that project for a
> while.
>
> I would be grateful if you can share your block-lists with me, so I
> can test my code with more cases.
>
> Also, please tell me, if you have any interest in testing the
> patch-set. We can't know if it'll be merged to the main dnsmasq repo,
> but extra testing and feedback kinda increases chances of that
> happening :-)
>
> [1]
> https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q3/017627.html
>
This might interest me too. I run dnsmasq with a 'blacklist' on two
systems. One is a ThinkPad t470 laptop with 8Gb of memory and more disk
space than I know what to do with so I doubt if reducing dnsmasq's
memory footprint will make much difference there. However I'm also
running dnsmasq with a blacklist on an Asus DSL-AC68U router (running
ASUSWRT-Merlin) and that has only 256Mb memory so reducing the amount
that dnsmasq uses could well be a good thing.
The blacklist I use comes from:-
https://raw.githubusercontent.com/StevenBlack/hosts/master/hosts
I run a trivial awk script to convert it so I can just put the
converted file into /etc/dnsmasq.d. An example of the converted file
is:-
address=/uk2.thor.rtk.io/
address=/www.rtk.io/
address=/mt.rtmark.net/
address=/my.rtmark.net/
address=/token.rubiconproject.com/
address=/runative-syndicate.com/
address=/pixel.runative-syndicate.com/
address=/s.sh/
address=/log-1.samsungacr.com/
address=/log-2.samsungacr.com/
Currently the file has a bit over 121k entries and is about 3.7Mb.
At the moment I can't see a way to monitor memory usage on the
DSL-AC68U, top just says 'no process info in /proc'. I can install
things via opkg on it. There's 'collectd-mod-memory' which says it's
a "physical memory usage input plugin".
--
Chris Green
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