DB queries != File System queries 
I guess there are some shortcomings with the way things are
implemented as
far as the standard "fetching" mechanism is done
in blojsom right now. It
loads all the entries and then the plugins cut 'em down, so
to speak,
depending on things like date parameters, limit for entries
to display,
etc...
So, not the best way of doing things. I won't argue 'bout
that.
On 3/9/06 2:32 PM, "ogjunk-blojsom yahoo.com" <ogjunk-blojsomyahoo.com>
wrote:
> Yeah, that would be a bandaid. But before I resort to
bandaids, I'd love to
> figure out what the app is doing that is SO CPU
intensive. The same server
> runs http://www.simpy.com/ , and
the front page (not cached) with several DB
> queries and joins renders faster than Blojsom, which
should really be doing
> simple and non-CPU intensive stuff, like reading files
off of disk (and the FS
> has them cached).
>
> Any ideas? Does Blojsom do something else there?
>
> Thanks,
> Otis
>
> ----- Original Message ----
> From: David Czarnecki <davidblojsom.com>
> To: blojsom-users mailing list <blojsom-userslists.sourceforge.net>
> Sent: Thursday, March 9, 2006 2:23:59 PM
> Subject: Re: [Blojsom-users] Blojsom chewing my CPU
>
> I'd throw the caching in front of it and that should
greatly improve things.
>
>
> On 3/9/06 2:12 PM, "ogjunk-blojsomyahoo.com" <ogjunk-blojsomyahoo.com>
> wrote:
>
>> Hi,
>>
>> Can somebody familiar with the code explain in a
few words what Blojsom
>> webapp
>> does when its main page is loaded?
>> More precisely, what are some of the more expensive
operations?
>>
>> I'm asking because my Blojsom-powered blog seems
to take up to 10 seconds to
>> load on an otherwise not overloaded server. Here
is the output of 'vmstat 1'
>> that shows the CPU getting chewed up 100% while the
blog loads:
>>
>> procs -----------memory---------- ---swap--
-----io---- --system--
>> ----cpu----
>> 0 0 128 124876 102476 2461200 0 0 0
0 273 94 1 0 99
>> 0
>> 0 0 128 124876 102476 2461204 0 0 0
72 323 170 2 2 96
>> 0
>> 0 0 128 124876 102476 2461204 0 0 0
0 306 153 1 0 99
>> 0
>> 0 0 128 124876 102476 2461204 0 0 0
0 295 142 3 1 96
>> 0
>> 1 0 128 124768 102476 2461208 0 0 0
0 284 120 50 50 0
>> 0 <==
>> 1 0 128 124768 102476 2461208 0 0 0
948 283 124 51 49 0
>> 0 ..
>> 1 0 128 124768 102476 2461208 0 0 0
0 259 104 52 48 0
>> 0 ..
>> 1 0 128 124768 102476 2461208 0 0 0
0 260 109 56 44 0
>> 0 ..
>> 1 0 128 124768 102476 2461208 0 0 0
0 266 118 56 44 0
>> 0 ..
>> 1 0 128 124892 102476 2461208 0 0 0
0 272 129 97 3 0
>> 0 ..
>> 0 0 128 124892 102476 2461212 0 0 0
2080 318 162 19 4 75
>> 2 <==
>> 0 0 128 124908 102476 2461216 0 0 0
0 303 190 8 0 92
>> 0
>>
>>
>> The important columns are the last 2 columns. My
arrows mark begin/end of
>> the
>> CPU-munch.
>> Note that the last column is 0, indicating there is
no waiting for IO.
>>
>> Any ideas what's going on?
>> The blog in question is: http://blog.simpy.com/
>>
>> The blog has only 122 entries:
>> $ find . -name \*.html | wc -l
>> 122
>>
>> I can throw caching in front of it, but I think
there is a problem to be
>> solved here.
>> I'm using version 2.29.
>>
>> Thanks,
>> Otis
>>
>>
>>
>>
>>
>>
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--
David Czarnecki
http://www.blojsom.com/b
log/ | http://blojsom.sf.net
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