[Privoxy-users] Privoxy on a Raspberry Pi

[Lee]

This looks strange:
2017-03-15 21:59:51.262 b6ceb460 Connect: Done reading from server.
Content length: 23531 as expected. Bytes most recently read: 4319.
2017-03-15 21:59:52.517 b6ceb460 Header: Adjusted Content-Length to 168029
2017-03-15 21:59:52.517 b6ceb460 Header: Crunching: Content-Encoding: gzip

privoxy received 23KB of gziped data and unzips it to 168KB -- which
takes about 1.25 seconds!??

Can you try adding

{ -filter }
/

to the end of your user.action and try it again?

http://config.privoxy.org/user-manual/actions-file.html#FILTER
  Compressed content can't be filtered either, but if Privoxy is
compiled with zlib support
  and a supported compression algorithm is used (gzip or deflate),
Privoxy can first
  decompress the content and then filter it.

Regards,
Lee


On 3/15/17, Phyks <phyks at phyks.me> wrote:
> Hi,
>
> Framadrop works for me, weird. Anyway, I put it on a pastebin here:
> http://paste.alacon.org/43566.
>
> I did not yet try to update Privoxy, I will look into it (this is still
> on 3.0.21).
>
> The pi is running its own Unbound DNS resolver. It should work fine, and
> typically if I make my laptop use it as well, I have DNS resolution
> times comparable with 8.8.8.8.
>
> Thanks,
> --
> Phyks
>
> Le 15/03/2017 à 22:27, Ian Silvester a écrit :
>> Hi Phyks,
>>
>> I could not retrieve the log excerpt stored at framadrop.org - could you
>> check and reconfirm?
>>
>> That aside, could you also supply details of the Pi's DNS configuration
>> - are the servers listed explicitly anywhere or is it using DHCP and
>> fall back to those supplied by the LAN's router?
>>
>> Cheers,
>>
>> Ian
>>
>>
>> My PGP public
>> key[http://diem.serveftp.net:8080/IanSilvesterPGPPublicKey.asc]
>>
>> On Wed, 15 Mar 2017, at 17:07, Phyks wrote:
>>> Hi,
>>>
>>> I tried to debug it further. Here are some tests with the current
>>> settings.
>>>
>>> Using Privoxy home page:
>>> * Without Privoxy, the main HTML takes around 80ms to load.
>>> * With Privoxy, it takes around 500ms to load, if I reload the page
>>> (even clearing the browser cache), it drops to about 80ms which is in
>>> agreement with the without Privoxy case.
>>>
>>> (Screenshots available at
>>> https://lutim.phyks.me/gallery#jqNGoAnQ/86EWpbzr.png,Q23nsaOT/1XMA8IBi.png,
>>> put online as I am unsure about the policy with attached images on this
>>> ML)
>>>
>>>
>>> If I do the same test with http://clubic.com,
>>> * Without Privoxy, the main HTML takes around 54ms to load.
>>> * With Privoxy, it takes around 1.5s and this is reproducible even if I
>>> reload immediately the page.
>>>
>>>
>>> Looking at htop in parallel, Privoxy is spawning multiple processes
>>> (about 10) and CPU load goes from 3% to around 100%, used by these
>>> processes.
>>>
>>> The Raspberry Pi and my laptop are on the same local network, and the
>>> Raspberry Pi is wired with 100M ethernet to the router, so the network
>>> itself should be out of troubles.
>>>
>>>
>>> Looking at the log as stated in the contact page
>>> (https://framadrop.org/r/6j81o2D1m0#XNEfEVjRtqAXaHHI3YMRH3jtKRfxKdm7EADyfL/yEHk=),
>>> it
>>> seems that Privoxy is taking 1.5s to actually load the HTML content from
>>> the remote server.
>>>
>>> However,
>>>
>>> ```
>>> $ time curl http://www.clubic.com -s > /dev/null
>>>
>>> real    0m0.291s
>>> user    0m0.120s
>>> sys 0m0.030s
>>> ```
>>> so that it seems to be a problem related to Privoxy itself (and not due
>>> to some network limitation on the Raspberry Pi or whatever like this).
>>>
>>>
>>> Thanks!
>>> --
>>> Phyks
>>>
>>> Le 14/03/2017 à 19:50, Fabian Keil a écrit :
>>>> Phyks <phyks at phyks.me> wrote:
>>>>
>>>>> I installed Privoxy on Raspbian (latest, Debian derived, based on
>>>>> Jessie) through the repositories (version 3.0.21-7+deb8u1 installed).
>>>>> Everything is running on a regular Raspberry Pi 1.
>>>>
>>>> Note that the current Privoxy version is 3.0.26 which means
>>>> you are missing out on a bunch of changes including various
>>>> performance improvements:
>>>> http://ijbswa.cvs.sourceforge.net/viewvc/ijbswa/current/ChangeLog?view=markup
>>>>
>>>> Our current versioning scheme is a bit silly and we only bump
>>>> the last number.
>>>>
>>>>> When I browse to any page (default configuration, no extra actions /
>>>>> filter added yet), the CPU usage goes to 100% on the Raspberry Pi, and
>>>>> it takes a few seconds to actually proxy the page, increasing the load
>>>>> time from a few milliseconds to some seconds.
>>>>
>>>> That seems unreasonably slow to me, too.
>>>>
>>>>> I was wondering if anyone had experience with a similar setup and could
>>>>> give me some input about the performances of the system. Also, is there
>>>>> anything I could do to make it lighter?
>>>>
>>>> If you enable the debug directives recommended at:
>>>> https://www.privoxy.org/user-manual/contact.html
>>>> the log file should help to diagnose the issue.
>>>>
>>>> Please reproduce the problem with logging enabled and provide
>>>> a log excerpt.
>>>>
>>>> Please also double check that the CPU usage is actually
>>>> caused by Privoxy itself.
>>>>
>>>> Fabian
>>>>
>>>
>>> _______________________________________________
>>> Privoxy-users mailing list
>>> Privoxy-users at lists.privoxy.org
>>> https://lists.privoxy.org/mailman/listinfo/privoxy-users
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