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From "Adam W. Dace" <colonelforbi...@gmail.com>
Subject Re: Can ATS keep more than 500mbit/s traffic for single instance?
Date Fri, 22 Nov 2013 07:25:27 GMT
I haven't bothered, yet.  Although I'm hoping to build the next version
with the boost C++ library in the hopes that helps.

I'll take a look.


On Thu, Nov 21, 2013 at 10:11 PM, James Peach <jpeach@apache.org> wrote:

>
> On Nov 21, 2013, at 7:57 PM, Adam W. Dace <colonelforbin74@gmail.com>
> wrote:
>
> > Also, once you've gotten past your immediate problem and are looking to
> deploy my Wiki page may help:
> >
> > https://cwiki.apache.org/confluence/display/TS/WebProxyCacheTuning
> >
> > To call it "best practices" would be a bit much, but I spent quite a bit
> of time simply tuning ATS for my own uses.
> > The page is finally stable(i.e. I'm done now) and I'm quite pleased.
>  I'm hoping once the next release is out the door
> > I can start bugging the commiters to take a look and review it.
>
> Yes, that's a nice piece of work! The effect of
> proxy.config.system.mmap_max is interesting; were you ble to test with
> tcmalloc?
>
> >
> > Regards,
> >
> >
> >
> > On Thu, Nov 21, 2013 at 9:53 PM, Adam W. Dace <colonelforbin74@gmail.com>
> wrote:
> > If I'm not mistaken, that usually indicates the -incoming- HTTP
> connection limit has been reached.
> > Unless you've modified the generic config, that usually clocks in at
> 30,000 simultaneous connections.
> >
> > Maybe you can tweak the test that's generating those connections and
> have them request fewer, bigger objects.
> > You also might want to take a look at
> proxy.config.net.connections_throttle in records.conf.
> > I'm not sure what the impact of raising it might be, though.
> >
> >
> >
> > On Thu, Nov 21, 2013 at 2:46 PM, Pavel Kazlenka <
> pavel.kazlenka@measurement-factory.com> wrote:
> > You are right, I see
> > >Server {0x2b74d72c1700} WARNING: too many connections, throttling
> > in diags.log
> >
> > My test simulates 1k origin servers and 1k user-agents on 500 clients (2
> agents per ip). Which kind of connections this warning about (client or
> server side?) and what can be improved here?
> >
> >
> > On 11/21/2013 10:42 PM, Leif Hedstrom wrote:
> > On Nov 21, 2013, at 11:50 AM, Pavel Kazlenka <
> pavel.kazlenka@measurement-factory.com> wrote:
> >
> > Hi gentlemen,
> >
> > I'm trying to estimate maximum performance of ATS 4.0.2 on single server
> in forwarding proxy mode.
> > Server hardware is 6-core CPU ( +6 cores with HyperThreading), 12Gb RAM
> and two 10G NICs (one in client LAN and another in server LAN).
> > ATS is configured with hwloc support, caching is disabled, squid blob
> logging is disabled too.
> > I started from the config close to default: http://pastebin.com/AVQnJ4VL
> >
> > But whatever I tried, I cannot force ATS to keep more than 500mbit/s (6k
> requests/s in my test) and do not start to drop requests. I tried to:
> > - limit working threads number to number of cores and let ATS decide how
> to map threads to cores;
> > - leave 6 cores to NIC interrupts and bind ATS working threads + accept
> thread to another cores so avoiding cores from changing tasks
> (ats/interrupts);
> > - play with memory related config variables: system.mmap_max,
> thread.default.stacksize, allocator.thread_freelist_size, etc.
> >
> > Hmmmm, that sounds bad. Have you verified that the origin side can do
> beyond this ? Is there anything in the logs about e.g. connection
> throttling, or anything else ? Is it limiting the number of origin
> connections?
> >
> > I’ll see if I can setup something in our lab to test this, it’s a bit
> unwieldy right now, so not sure I can get access to something with this
> sort of capacity.
> >
> > — Leif
> >
> >
> >
> >
> >
> > --
> > ____________________________________________________________
> > Adam W. Dace <colonelforbin74@gmail.com>
> >
> > Phone: (815) 355-5848
> > Instant Messenger: AIM & Yahoo! IM - colonelforbin74 | ICQ - #39374451
> > Microsoft Messenger - colonelforbin74@live.com
> >
> > Google Profile: https://plus.google.com/u/0/109309036874332290399/about
> >
> >
> >
> > --
> > ____________________________________________________________
> > Adam W. Dace <colonelforbin74@gmail.com>
> >
> > Phone: (815) 355-5848
> > Instant Messenger: AIM & Yahoo! IM - colonelforbin74 | ICQ - #39374451
> > Microsoft Messenger - colonelforbin74@live.com
> >
> > Google Profile: https://plus.google.com/u/0/109309036874332290399/about
>
>


-- 
____________________________________________________________
Adam W. Dace <colonelforbin74@gmail.com>

Phone: (815) 355-5848
Instant Messenger: AIM & Yahoo! IM - colonelforbin74 | ICQ - #39374451
Microsoft Messenger - colonelforbin74@live.com <adam@turing.com>

Google Profile: https://plus.google.com/u/0/109309036874332290399/about

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