Linode Forum

Performance and Tuning :: RE: Apache/Passenger Tuning on Linode 768

Author: mottalrd
Posted: Thu Feb 09, 2012 4:29 am (GMT -5)
Topic Replies: 3

Quote:

Looks like you have 344 MB of free RAM there... is there anything in specific that happens before/when it runs out of RAM? Do you have anything else installed that's RAM-intensive (e.g. a database server)?

I didn't explain myself well. I am not going out-of-memory anymore since I changed PassengerMaxPoolSize from 6 to 3.
However for 512mb VPS it is common to have PassengerMaxPoolSize=6 but I am on a 768mb VPS, so my application is using much more memory than the others.

ps aux tells me that rails is using 15% of memory for every application instance open, this seems a lot to me, could you comment on this value?

Quote:

www-data 406 2.4 15.3 130764 118060 ? Sl 10:12 2:31 Rack: /srv/www/myapplication.it/application

ps:

Quote:

If you don't know where hoopy got the 344mb figure from, see http://www.linuxatemyram.com/

you are right, I was looking at the wrong value, thank you

General Discussion :: copy disk over ssh, Unknown command 'dd if=/dev/xvda'

Author: shadi
Subject: copy disk over ssh, Unknown command 'dd if=/dev/xvda'
Posted: Thu Feb 09, 2012 2:42 am (GMT -5)
Topic Replies: 0

guys, I followed this tutorial http://library.linode.com/linode-platform/migration/copy-disk-image-over-ssh

and when I run the command

Code:

ssh root@12.34.56.78 "dd if=/dev/xvda " | dd of=/home/archive/linode.img

I get a 1KB file on my PC named linode.img, when I open that file I find this text:

Code:

Unknown command 'dd if=/dev/xvda'

What could be the problem?

General Discussion :: RE: 12hr date

Author: retrograde inversion
Posted: Wed Feb 08, 2012 11:51 pm (GMT -5)
Topic Replies: 1

This is described in man date:

Code:

SYNOPSIS
date [OPTION]... [+FORMAT]

So you would type date, then a + followed by an appropriate format string. As an example:

Code:

% date +%I
08

General Discussion :: 12hr date

Author: galath
Subject: 12hr date
Posted: Wed Feb 08, 2012 11:45 pm (GMT -5)
Topic Replies: 1

I'm wanting to make the 'date' command be 12hr instead of 24hr - is there a way I could do it? I think %I is the correct 12hr instead of %H - but I don't know where to set it.

Thanks

General Discussion :: RE: Disconnected Line graph

Author: od3n
Posted: Wed Feb 08, 2012 10:17 pm (GMT -5)
Topic Replies: 4

thanks everyone for clear me up on this matter. linode community are awesome!

General Discussion :: RE: Disconnected Line graph

Author: caker
Posted: Wed Feb 08, 2012 10:11 pm (GMT -5)
Topic Replies: 4

Sometimes the stats collection system misses samples like when it can't send them up, or if the stats daemon restarts, etc.

Don't sweat it.

-Chris

Web Servers and Web App Development :: The Tomcat no display my site!

Author: gshackum
Subject: The Tomcat no display my site!
Posted: Wed Feb 08, 2012 9:53 pm (GMT -5)
Topic Replies: 0

What is happening? I can not understand. Tomcat7 installed on my server. I put my website within the folder / var/lib/tomcat7/webapps/ROOT / but when I access the site: 8080 does not displays the site

General Discussion :: RE: Disconnected Line graph

Author: Ghan_04
Posted: Wed Feb 08, 2012 9:41 pm (GMT -5)
Topic Replies: 4

I also have this issue with my graphs. I don't really worry about it too much, but I have seen it happen multiple times over the course of 24 hours.
Hey, as long as the server is up and running fine, I'm happy.

General Discussion :: RE: Disconnected Line graph

Author: GLaDOSDan
Posted: Wed Feb 08, 2012 9:12 pm (GMT -5)
Topic Replies: 4

Sometimes the Linode stat servers fail to pull the data from the host servers, and thus have no data to display for that specific time. This used to happen quite a lot and seems to be less frequent now however it still happens. This isn't your fault and is nothing to worry about, if it appears 'broken' for a large amount of time (hours/days) you might consider opening a support ticket, otherwise there's no problem.

General Discussion :: Disconnected Line graph

Author: od3n
Subject: Disconnected Line graph
Posted: Wed Feb 08, 2012 9:03 pm (GMT -5)
Topic Replies: 4

Can anyone tell me why i got disconnected line graph? See at 20:00 hour. And sometime it repeat at another hour also. But my sites shows no downtime using pingdom to check my sites uptime. I use cloudflare service as well.

Feature Request/Bug Report :: RE: Auto-import Google Apps MX records

Author: czhang
Posted: Wed Feb 08, 2012 8:56 pm (GMT -5)
Topic Replies: 9

Agree; I use DNS Made Easy for my DNS hosting and there are templates available for Google Apps and other services. I don't quite see how making prepopulated templates would serve as an endorsement of their service. Sounds like a great idea!

General Discussion :: RE: Linode transfer/CPU/disk stats

Author: obs
Posted: Wed Feb 08, 2012 7:22 pm (GMT -5)
Topic Replies: 10

I've seen it on high, a few days ago a host had a hardware failure and the drives had to be hot-swapped to a backup host (very quickly I might add thanks to the linode-awesomeness).
_________________
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How to ask for help
1. Give details of your problem
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Email/SMTP Related Forum :: RE: Would like to pay for some help on configuring mail server.

Author: hjohnson57
Posted: Wed Feb 08, 2012 7:10 pm (GMT -5)
Topic Replies: 6

I can help you troubleshoot your email configuration. Send me a private message with contact information.

Email/SMTP Related Forum :: RE: Postfix, Courier, MySQL status=bounced

Author: jawainc
Posted: Wed Feb 08, 2012 6:17 pm (GMT -5)
Topic Replies: 2

OK.. SMTP problem solved

change /etc/postfix/sasl/smtpd.conf to

Code:

-mech_list: plain login
+mech_list: plain login pam
allow_plaintext: true
-auxprop_plugin: mysql
+auxprop_plugin: sql
+sql_engine: mysql
sql_hostnames: 127.0.0.1
sql_user: [REMOVED]
sql_passwd: [REMOVED]
sql_database: [REMOVED]
-sql_select: select password from mail_user where email = '%u'
+sql_select: select password from mail_user where login = '%u@%r'

**
- remove those lines with minus sign
+ add lines with plus sign

General Discussion :: RE: Linode transfer/CPU/disk stats

Author: rsk
Posted: Wed Feb 08, 2012 5:44 pm (GMT -5)
Topic Replies: 10

Guspaz wrote:

hybinet wrote:

I never quite understood the point of showing it in the Dashboard in the first place, since it's always either "low" or "medium" and the difference between the two doesn't affect the VM's performance in any way.

Mine shows "idle"

From what I heard, the "host load" readout was correct for UML, got broken and always shown "idle" for Xen, then got removed with the switch to new manager, and readded when some people complained(including me, but I was complaining about lack of the physical host name on the dashboard, not the load status).
Wouldn't be surprised if it again always show "idle" no matter what, I've never saw it say anything else. But maybe Linode's hardware is just THAT good.
_________________
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