1
vote
2answers
30 views

Is there a way to clear the Zeus/Stingray cache without using SOAP

There is an example here of how to clear the content cache in Stingray using the SOAP api https://splash.riverbed.com/docs/DOC-1238 However, I know that Stingray does write a lot of things to flat ...
3
votes
1answer
114 views

iozone: 5 concurrent threads random read of 300K blocks does more ops/s than using only one thread, what could be the underlying reason?

The partition is in RAID1 using software RAID. Command line used: iozone -s 190g -r 300k -O -b test_file OPS Mode. Output is in operations per second. ...
1
vote
0answers
43 views

How to make BIND return old cached enties if all forwarders are failed?

I have a local forwarding BIND server installed at localhost. In its configuration there is a couple of forwarders: options { ... forwarders { 1.2.3.4; 5.6.7.8; }; ... }; Servers which are pointed ...
1
vote
1answer
232 views

Caching large amounts of data

We need to cache all psd/zip files from our amazone S3 storage. The amount of the cache between 150-200 Gb (we need to store files at least 2 month). Now we use transparent proxy squid without any ...
0
votes
1answer
228 views

XFS - Force write every n minutes?

I'm running the recently-released Fedora 18, and doing some computationally intensive things with it. The result is... unstable, at best. But! That's about what I expected, or at least not what I'm ...
0
votes
1answer
83 views

Seperating Audio,js,css,and images in seperate directory nginx

I am having a dynamic website,which is running on nginx and php-fpm. Can there be any performance improvement if images,Audio Files,css,js files are put into a seperate directory. here is my current ...
0
votes
1answer
196 views

Determine performance of disk cache in Linux 2.6.32+

I am hoping to find some good methods (by looking at /proc) or good tools that I can use to determine the effectiveness of the disk cache. I would like to be able to determine just how much of the RAM ...
11
votes
3answers
5k views

Tuning Linux disk caching behaviour for maximum throughput

I'm running into a maximum throughput issue here and need some advice on which way to tune my knobs. We're running a 10Gbit fileserver for backup distribution. It's a two disk S-ATA2 setup on an LSI ...
1
vote
2answers
255 views

MySQL query caching - what happens if Server runs out of RAM?

so I have enabled query caching on my server but now from the 8 GB RAM there is almost non left! CPU is around 3% ! Now what happens when there is no more RAM left? Will this just increase CPU load? ...
0
votes
1answer
87 views

Upgraded phpMyAdmin, can't see any changes in browser. Server caching?

How do I check if server caching is on, and is it okay to clear the cache (how do I do that?)? I have completely replaced all files in my phpMyAdmin directory so I'm not sure what else it could be. ...
5
votes
2answers
147 views

Slower/cached Linux file system required

I know it sounds odd but I need a slower or cached filesystem. I have a lot of firewalls that are syslog'ing their data to a pair of Linux VMs which write these files to their 'local' (actually FC ...
0
votes
1answer
744 views

APC File Cache not working but user cache is fine [closed]

I have just got a VPS (with cPanel/WHM) to test what gains i could get in my application with using apc file cache AND user cache. So firstly I got the PHP 5.3 compiled in as a DSO (apache module). ...
1
vote
1answer
91 views

on Linux, is there any way(tools) to know which application cached data and what the data is?

On my linux system I find that the free memory is continuously reduced.I use free -m to get the free memory size. But after I execute echo 3 > /proc/sys/vm/drop_caches the size of free memory ...
0
votes
2answers
84 views

Procedure for Setup of Internal Cache Server

I currently have a small business where many of the computers download the same fies over and over again (for example Windows Updates). What I'd like to do is setup a cache server, something that'll ...
0
votes
1answer
197 views

Is dnsmasq a cache?

I have doubt whether dnsmasq is a DNS server or just a cache for DNS. I see in some of the linux machines that the dnsmasq is installed. Is it installed in default? Thanks in advance.
1
vote
1answer
147 views

Install Appfabric on linux

I'm developing an asp.net mvc application with the intention to host on linux using mono. I want to use appfabric for caching but seeing as it is built into windows. I'm wondering if it can also be ...
0
votes
1answer
72 views

Windows to linux fileshare is sometimes using old (cached) version of file

I have a fileshare on Windows 7 that I'm accessing from a linux (ubuntu lucid) virtual machine running in VirtualBox. When I change a file in windows, then don't access it for a while (an hour or two ...
1
vote
1answer
272 views

when to use squid on server side?

so i have set up apache serving my php pages. i read about squid but don't understand why/how i should use it to speed up my web server. from what i've learned squid is located in same network (or ...
0
votes
1answer
405 views

How to “distribute” memcached?

I know how to install and use memcached on one server. But I heard you can "distribute it"? How does that work, and how can I enable that feature?
0
votes
2answers
333 views

Local multi-distribution repository proxy

We have several linux workstations on the local network, with more on the way and I'd like to set up a local repository to save bandwidth and speed up installation and updates. However, we use CentOS ...
23
votes
17answers
21k views

Caching/preloading files on Linux into RAM

I have a rather old server that has 4GB of RAM and it is pretty much serving the same files all day, but it is doing so from the hard drive while 3GBs of RAM are "free". Anyone who has ever tried ...