LOL.....Thanks to everyone for helping me do a better job of phrasing my
question....;-) and for your good suggestions.
I agree, one can always use more
(clean) air
FOOD
BEER (wine for some)
RAM, CPU,s, (but maybe not ROM)
I should have said...."Given a miniscule budget with no extra cash laying
around (other than in my pocket or the newspaper class teacher's pocket), I
am faced with two options to spend money.
A - $50/year for an additional 2GB of disk space, which is enough for the
next year or so, and we need that disk space for articles and photos.
B - $109/year for 8GB of additional disk space (don't need all that now, but
will grow into it), 180 MB of RAM (do I really need it?) and additional
bandwidth that I don't need."
Both amounts are due up front - ie discounted over the normal monthly cost
for up front payment and non-profit status.
The minimum RAM requirement (from the documentation) for a Plone site is
512MB. But I have run many small sites on less and they work just fine. This
one is a case in point.
The results of free -t:
total used free shared buffers cached
Mem: 368836 363408 5428 0 24248 51712
-/+ buffers/cache: 287448 81388
Swap: 524280 47180 477100
Total: 893116 410588 482528
Can someone help me interpret these numbers? Based on "The "-/+
buffers/cache:" line will tell you how much memory the system is
taking because nobody else is using it." I would conclude that the OS (ie
the "system") as opposed to the application is using most of the memory
because it can, so the app is not being starved. But I can argue the other
way as well, so I am a little lost.
For what it is worth, Plone/Zope are Python beasts. Is there a way to see if
any of the application is in swap versus RAM? The system does not have a
noticeable lag when pages are accessed - it is not instantaneous, but faster
than my Google apps account. ;-)
Thanks!
Mark
On Thu, Jan 21, 2010 at 8:54 AM,
kitepilot@kitepilot.com <
kitepilot@kitepilot.com> wrote:
> Do I need more air?
> Do I need more FOOD?
> Do I need MORE BEER!!!
>
> Give more, MORE, MOOOREEEE!!!!
> Gawd, I need more Prozac too... :)
>
> You will never have too much memory, or extrapolating to aviation:
> The only time I have too much fuel is when the airplane is on fire... ;-)
>
> top alone will only hand you part of the picture.
> Try:
> free -t
> Look at the line:
> -/+ buffers/cache: XXXX
>
> Memory is used by buffers that are there only for efficiency, but will be
> returned to the system on demand. Sometimes very little used stuff will go
> to swap, and adding memory will not really help anything (and it won't hurt
> anything either, other than your checkbook)
>
> The "-/+ buffers/cache:" line will tell you how much memory the system is
> taking because nobody else is using it.
> YMMV...
> ET
>
> PS: And that "airplane on fire" wisdom is not always true, but works for
> novice pilots...
> Or:
> My job is not to teach how to fly.
> My job is to help you stay alive while you learn... :)
>
>
>
>
>
> Mark Phillips writes:
>
> > I have a Zope/Plone 2.5 web site running on Debian on a Linode virtual
> host.
> > It has grown over the last few years, and now I need to add some more
> disk
> > space. The site is for a school newspaper, so from August - June,
> students
> > add news articles and photos.
> >
> > I was also looking at the output of top, and perhaps I need more RAM as
> > well? Top shows I have only 5 MB free out of 368 MB of total RAM, but I
> am
> > only using 9% of my swap, so perhaps I don't need more RAM. The site does
> > not seem slow.
> >
> > Tasks: 69 total, 1 running, 68 sleeping, 0 stopped, 0 zombie
> > Cpu(s): 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si,
> > 0.0%st
> > Mem: 368836k total, 363364k used, 5472k free, 8316k buffers
> > Swap: 524280k total, 46716k used, 477564k free, 67436k cached
> >
> > Thanks for any suggestions you may have.
> >
> > Mark
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