Diagnosing a Memcache server with a high cache miss rate

Posted by Hobozilla on Server Fault See other posts from Server Fault or by Hobozilla
Published on 2011-03-16T15:18:58Z Indexed on 2011/03/16 16:12 UTC
Read the original article Hit count: 290

Filed under:

cache

|

tools

|

memcache

Hi Guys,

What tools are available to debug a memcache server with a high miss rate (62%)?

Ideally I would like to know the keys for the top cache misses, but I would just settle for seeing the keys of live get requests and working it out from there.

I have tried a few web based things (phpMemcache) but it doesn't have the information I need. I also tried statsproxy-1.0 which appeared to do what I need but would not play ball.

Many thanks

© Server Fault or respective owner

Related posts about cache

How to remove a package entirely?

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
Hi I'm quite new to Linux, but before using it I was hearing that Windows programs, after uninstallation, leaves a lot of remains on the hard disc, and Linux removes all. I'm using Ubuntu 10.04. To uninstall packages I'm using sudo apt-get autoremove application_name or sudo aptitude purge application_name… >>> More
LVM / Device Mapper maps wrong device

as seen on Server Fault - Search for 'Server Fault'
Hi, I run a LVM setup on a raid1 created by mdadm. md2 is based on sda6 (major:minor 8:6) and sdb6 (8:22). md2 is partition 9:2. The VG on top of md2 has 4 LVs, var, home, usr, tmp. First the problem: While booting it seems as if the device mapper takes the wrong partition for the mapping! Immediately… >>> More
Application throws NotSerializableException when run on an jboss cluster

as seen on Stack Overflow - Search for 'Stack Overflow'
Environment: JBoss 5.1.0, JBoss Seam 2.2.0 While trying to get my application running in a clustered environment after login I am getting the following exception. Post login we try to store the currentUser in jboss seam session context. java.io.NotSerializableException: org.jboss.seam.util.AnnotatedBeanProperty How… >>> More
Windows Azure Evolution – Caching (Preview)

as seen on Geeks with Blogs - Search for 'Geeks with Blogs'
Caching is a popular topic when we are building a high performance and high scalable system not only on top of the cloud platform but the on-premise environment as well. On March 2011 the Windows Azure AppFabric Caching had been production launched. It provides an in-memory, distributed caching service… >>> More
Locking Cache Key without Locking the entire Cache

as seen on Stack Overflow - Search for 'Stack Overflow'
I have servlets that caches user information rather then retrieving it from the user store on every request (shared Ehcache). The issue I have is that if a client is multi-threaded and they make more then one simultaneous request, before they have been authenticated, then I get this in my log: Retrieving… >>> More

Related posts about tools

java.lang.IllegalAccessException during Ant jwsc webservice build

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi. I have a large application, part of which relies on a set of 3 webservices. I'm currently in the process of writing an Ant build script to build and package the application into an EAR file. When building the web sub-project for this application I use the <jwsc> task in Ant to compile… >>> More
juju bootstrap fails with a local environment, why?

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
Each time I try to bootstrap juju using a local enviroment it fails starting the juju-db-braiam-local script as follows: $ sudo juju --debug --verbose bootstrap 2013-10-20 02:28:53 INFO juju.provider.local environprovider.go:32 opening environment "local" 2013-10-20 02:28:53 DEBUG juju.provider.local… >>> More
How to stop an IOException error using whilst using a combination of jython, pyro and ant?

as seen on Stack Overflow - Search for 'Stack Overflow'
So the wonderful low down on this doozie of a problem: short version: We are building a distribution system for this item of software we're using. Basically we take out build artifact, store it on an ftp server which passes it to multiple clients which execute scripts to patch their servers. Long… >>> More
DNS Tools - DNS and Few of its Concerning Terms and Tools

as seen on Article City - Search for 'Article City'
A DNS or Domain Name System lets you locate computers on a network or the Internet TCP/IP network by domain name. The DNS server sustains a database of domain names or host names along with their cor... [Author: Daisy Osbaldo - Computers and Internet - April 02, 2010] >>> More
Search Engines Online Business Tools For Website Marketing - 3 Free Tools to Optimise Your Website

as seen on Ezine Articles - Search for 'Ezine Articles'
Search engines online business tools for website marketing are available by the thousands, if not millions. Lots of software companies have designed a whole range of different applications to help you optimise your website and marketing campaigns. When I first started with online marketing, I looked… >>> More