Re: Apache + mod_php performance

Liste des GroupesRevenir à co vms 
Sujet : Re: Apache + mod_php performance
De : cross (at) *nospam* spitfire.i.gajendra.net (Dan Cross)
Groupes : comp.os.vms
Date : 02. Oct 2024, 17:25:08
Autres entêtes
Organisation : PANIX Public Access Internet and UNIX, NYC
Message-ID : <vdjs54$rdp$1@reader1.panix.com>
References : 1 2 3 4
User-Agent : trn 4.0-test77 (Sep 1, 2010)
In article <vdjpps$fk2$2@reader1.panix.com>,
Dan Cross <cross@spitfire.i.gajendra.net> wrote:
In article <vdjoui$37f8q$4@dont-email.me>,
Arne Vajhøj  <arne@vajhoej.dk> wrote:
On 10/2/2024 11:20 AM, Arne Vajhøj wrote:
On 10/2/2024 11:07 AM, Dan Cross wrote:
In article <vdjmq4$37f8q$3@dont-email.me>,
Arne Vajhøj  <arne@vajhoej.dk> wrote:
On 10/2/2024 10:47 AM, Dan Cross wrote:
[snip]
You do not seem to understand how this is qualitatively
different from your test program not sending `Connection: close`
with its single request per connection, and then blocking until
the server times it out.
>
It is qualitative different from what you are imaging.
>
The client does not block until the server times out.
>
So what, exactly, does it do?
 
It moves on to next request.
 
That request will block if the server can't serve it
because all processes are busy.
 
 >                            And what is the "problem" that
 > you are imagining here?  Please be specific.
 
Go back to the first post in the thread.
 
The numbers for Apache are low. Much lower than
for other servers.
>
And the numbers are low due to keep alive.
>
Basically Apache on VMS keep an entire process around for
a kept alive connection.
>
When Apache configuration does not allow more
processes to start then new requests get queued
until keep alive starts to timeout and processes
free up.
>
And one can not just increase number of processes
allowed because they use 25 MB each. The system
runs out of memory/pagefile fast.
>
An it does not help that if Apache kills some
processes then it is expensive to start a new one again,
which means that either the large number of memory
consuming processes are kept around or Apache
will be slow to adjust to increasing load.
>
These are all claims not supported by the _actual_ evidence that
you've posted here.  While your argument is plausible on the
face of it, how did you arrive at this conclusion?
>
Post more details about your setup and experiments.

Let's dig a little deeper here and show that Arne's pro blem
is not specific to VMS.  Indeed, I can replicate something more
or less like the results he showed on FreeBSD.

I'm using "seige", which is another testing tool; here, I can
force HTTP/1.1 and also enable keep-alive via options in its
configuration file.  With 25 worker threads 1000 queries each,
I easily saturate the number of workers and hang waiting for
timeouts, tanking throughput.

So...Not a VMS problem at all.

- Dan C.


Date Sujet#  Auteur
24 Sep 24 * Apache + mod_php performance274Arne Vajhøj
24 Sep 24 +* Re: Apache + mod_php performance267Dan Cross
25 Sep 24 i`* Re: Apache + mod_php performance266Arne Vajhøj
25 Sep 24 i `* Re: Apache + mod_php performance265Dan Cross
25 Sep 24 i  `* Re: Apache + mod_php performance264Arne Vajhøj
25 Sep 24 i   +* Re: Apache + mod_php performance262Dan Cross
25 Sep 24 i   i`* Re: Apache + mod_php performance261Arne Vajhøj
25 Sep 24 i   i +* Re: Apache + mod_php performance12Arne Vajhøj
25 Sep 24 i   i i+- Re: Apache + mod_php performance1Lawrence D'Oliveiro
25 Sep 24 i   i i+* Re: Apache + mod_php performance3Lawrence D'Oliveiro
26 Sep 24 i   i ii`* Re: Apache + mod_php performance2Arne Vajhøj
26 Sep 24 i   i ii `- Re: Apache + mod_php performance1Lawrence D'Oliveiro
26 Sep 24 i   i i`* Re: Apache + mod_php performance7Craig A. Berry
26 Sep 24 i   i i +- Re: Apache + mod_php performance1Arne Vajhøj
26 Sep 24 i   i i `* Re: Apache + mod_php performance5Lawrence D'Oliveiro
27 Sep 24 i   i i  `* Re: Apache + mod_php performance4Arne Vajhøj
27 Sep 24 i   i i   `* Re: Apache + mod_php performance3Lawrence D'Oliveiro
27 Sep 24 i   i i    `* Re: Apache + mod_php performance2Craig A. Berry
27 Sep 24 i   i i     `- Re: Apache + mod_php performance1Lawrence D'Oliveiro
25 Sep 24 i   i +- Re: Apache + mod_php performance1Arne Vajhøj
26 Sep 24 i   i +* Re: Apache + mod_php performance21Arne Vajhøj
26 Sep 24 i   i i+* Re: Apache + mod_php performance3Lawrence D'Oliveiro
26 Sep 24 i   i ii`* Re: Apache + mod_php performance2Arne Vajhøj
26 Sep 24 i   i ii `- Re: Apache + mod_php performance1Lawrence D'Oliveiro
26 Sep 24 i   i i`* Re: Apache + mod_php performance17Craig A. Berry
26 Sep 24 i   i i `* Re: Apache + mod_php performance16Craig A. Berry
26 Sep 24 i   i i  +* Re: Apache + mod_php performance2Chris Townley
26 Sep 24 i   i i  i`- Re: Apache + mod_php performance1Arne Vajhøj
27 Sep 24 i   i i  `* Re: Apache + mod_php performance13Arne Vajhøj
27 Sep 24 i   i i   `* Re: Apache + mod_php performance12Lawrence D'Oliveiro
27 Sep 24 i   i i    `* Re: Apache + mod_php performance11Arne Vajhøj
27 Sep 24 i   i i     +* Re: Apache + mod_php performance3Lawrence D'Oliveiro
27 Sep 24 i   i i     i`* Re: Apache + mod_php performance2Arne Vajhøj
28 Sep 24 i   i i     i `- Re: Apache + mod_php performance1Lawrence D'Oliveiro
27 Sep 24 i   i i     +* Re: Apache + mod_php performance2Simon Clubley
27 Sep 24 i   i i     i`- Re: Apache + mod_php performance1Arne Vajhøj
27 Sep 24 i   i i     `* Re: Apache + mod_php performance5Craig A. Berry
27 Sep 24 i   i i      `* Re: Apache + mod_php performance4Arne Vajhøj
27 Sep 24 i   i i       `* Re: Apache + mod_php performance3Dan Cross
27 Sep 24 i   i i        `* Re: Apache + mod_php performance2Arne Vajhøj
27 Sep 24 i   i i         `- Re: Apache + mod_php performance1Dan Cross
26 Sep 24 i   i +* Re: Apache + mod_php performance38Dan Cross
27 Sep 24 i   i i`* Re: Apache + mod_php performance37Arne Vajhøj
27 Sep 24 i   i i +* Re: Apache + mod_php performance2Chris Townley
27 Sep 24 i   i i i`- Re: Apache + mod_php performance1Arne Vajhøj
27 Sep 24 i   i i +* Re: Apache + mod_php performance9Dan Cross
27 Sep 24 i   i i i`* Re: Apache + mod_php performance8Arne Vajhøj
27 Sep 24 i   i i i `* Re: Apache + mod_php performance7Dan Cross
27 Sep 24 i   i i i  `* Re: Apache + mod_php performance6Arne Vajhøj
27 Sep 24 i   i i i   `* Re: Apache + mod_php performance5Dan Cross
27 Sep 24 i   i i i    `* Re: Apache + mod_php performance4Arne Vajhøj
27 Sep 24 i   i i i     `* Re: Apache + mod_php performance3Dan Cross
27 Sep 24 i   i i i      `* Re: Apache + mod_php performance2Arne Vajhøj
27 Sep 24 i   i i i       `- Re: Apache + mod_php performance1Dan Cross
28 Sep 24 i   i i `* Re: Apache + mod_php performance25Lawrence D'Oliveiro
28 Sep 24 i   i i  `* Re: Apache + mod_php performance24Arne Vajhøj
28 Sep 24 i   i i   `* Re: Apache + mod_php performance23Lawrence D'Oliveiro
28 Sep 24 i   i i    `* Re: Apache + mod_php performance22Arne Vajhøj
28 Sep 24 i   i i     +* Re: Apache + mod_php performance7Lawrence D'Oliveiro
28 Sep 24 i   i i     i`* Re: Apache + mod_php performance6Arne Vajhøj
28 Sep 24 i   i i     i `* Re: Apache + mod_php performance5Lawrence D'Oliveiro
28 Sep 24 i   i i     i  `* Re: Apache + mod_php performance4Arne Vajhøj
28 Sep 24 i   i i     i   `* Re: Apache + mod_php performance3Lawrence D'Oliveiro
28 Sep 24 i   i i     i    `* Re: Apache + mod_php performance2Arne Vajhøj
28 Sep 24 i   i i     i     `- Re: Apache + mod_php performance1Lawrence D'Oliveiro
28 Sep 24 i   i i     `* Re: Apache + mod_php performance14Arne Vajhøj
28 Sep 24 i   i i      `* Re: Apache + mod_php performance13Lawrence D'Oliveiro
28 Sep 24 i   i i       `* Re: Apache + mod_php performance12Arne Vajhøj
28 Sep 24 i   i i        +* Re: Apache + mod_php performance3Arne Vajhøj
28 Sep 24 i   i i        i`* Re: Apache + mod_php performance2Lawrence D'Oliveiro
28 Sep 24 i   i i        i `- Re: Apache + mod_php performance1Arne Vajhøj
28 Sep 24 i   i i        `* Re: Apache + mod_php performance8Lawrence D'Oliveiro
28 Sep 24 i   i i         `* Re: Apache + mod_php performance7Arne Vajhøj
28 Sep 24 i   i i          +- Re: Apache + mod_php performance1Chris Townley
28 Sep 24 i   i i          `* Re: Apache + mod_php performance5Lawrence D'Oliveiro
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30 Sep 24 i   i i            `- Re: Apache + mod_php performance1Lawrence D'Oliveiro
28 Sep 24 i   i `* Re: Apache + mod_php performance188Arne Vajhøj
28 Sep 24 i   i  +* Re: Apache + mod_php performance56Dan Cross
28 Sep 24 i   i  i+* Re: Apache + mod_php performance51Arne Vajhøj
28 Sep 24 i   i  ii+- Re: Apache + mod_php performance1Lawrence D'Oliveiro
28 Sep 24 i   i  ii+* Re: Apache + mod_php performance48Dave Froble
1 Oct 24 i   i  iii`* Re: Apache + mod_php performance47Dan Cross
1 Oct 24 i   i  iii `* Re: Apache + mod_php performance46Arne Vajhøj
1 Oct 24 i   i  iii  +* Re: Apache + mod_php performance7Lawrence D'Oliveiro
2 Oct 24 i   i  iii  i`* Re: Apache + mod_php performance6Arne Vajhøj
2 Oct 24 i   i  iii  i `* Re: Apache + mod_php performance5Lawrence D'Oliveiro
3 Oct 24 i   i  iii  i  `* Re: Apache + mod_php performance4Arne Vajhøj
3 Oct 24 i   i  iii  i   `* Re: Apache + mod_php performance3Lawrence D'Oliveiro
3 Oct 24 i   i  iii  i    `* Re: Apache + mod_php performance2Arne Vajhøj
3 Oct 24 i   i  iii  i     `- Re: Apache + mod_php performance1Lawrence D'Oliveiro
2 Oct 24 i   i  iii  +* Re: Apache + mod_php performance5Dan Cross
2 Oct 24 i   i  iii  i`* Re: Apache + mod_php performance4Arne Vajhøj
2 Oct 24 i   i  iii  i `* Re: Apache + mod_php performance3Dan Cross
2 Oct 24 i   i  iii  i  `* Re: Apache + mod_php performance2Arne Vajhøj
2 Oct 24 i   i  iii  i   `- Re: Apache + mod_php performance1Dan Cross
2 Oct 24 i   i  iii  `* Re: Apache + mod_php performance33Dave Froble
2 Oct 24 i   i  iii   +* Re: Apache + mod_php performance31Arne Vajhøj
2 Oct 24 i   i  iii   i`* Re: Apache + mod_php performance30Dan Cross
2 Oct 24 i   i  iii   `- Re: Apache + mod_php performance1Dan Cross
30 Sep 24 i   i  ii`- Re: Apache + mod_php performance1Dan Cross
29 Sep 24 i   i  i`* Re: Apache + mod_php performance4Arne Vajhøj
28 Sep 24 i   i  `* Re: Apache + mod_php performance131Arne Vajhøj
27 Sep 24 i   `- Re: Apache + mod_php performance1Arne Vajhøj
24 Sep 24 +* Re: Apache + mod_php performance2Lawrence D'Oliveiro
25 Sep 24 +* Re: Apache + mod_php performance2Simon Clubley
2 Oct 24 `* Re: Apache + mod_php performance2Arne Vajhøj

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