0
votes
0answers
77 views

Debian mail server's Maildir folder with too many files causing disk I/O to go on high load

I have a Debian mail server running Postfix, Courier and Maildir, with disks on EXT3 filesystem. I have noticed that when I use my webmail application (Squirrelmail, in this case). It gets some kind ...
1
vote
1answer
199 views

optimizing ext[234] for small file throughput

I have a system that has a high throughput of small files on disk, i.e. a huge number of small files are created, written and deleted within seconds. Are there any reasonable ext2/ext3/ext4 mount ...
10
votes
10answers
752 views

How does the number of subdirectories impact drive read / write performance on Linux?

I've got an EXT3 formatted drive on a Linux CentOS server. This is a web app data drive and contains a directory for every user account ( there are 25,000 users ). Each folder contains files that ...
5
votes
2answers
805 views

Apache's htcacheclean doesn't scale: How to tame a huge Apache disk_cache?

We have an Apache setup with a huge disk_cache (>500.000 entries, >50 GB disk space used). The cache grows by 16 GB every day. My problem is that the cache seems to be growing nearly as fast as it's ...
0
votes
3answers
582 views

ext3 optimization for 3D design /modelign (Maya 2011) in Centos 5.4 x64

Today i have been partitioning a 1TB hard disk where i want to install tomorrow Centos 5.4  x64 for use for 3D modelling,with Maya 2011. I created a 10 GB swap ( 8GB ran + 2) a 620 gb  partition for ...
2
votes
1answer
676 views

Postfix spool on ext3 optimiziations in >=linux-2.6.34 days

Given the very specific nature of the subject (we're not talking about mailboxes, just the spool; we're not talking about other filesystems, just ext3; and so on...) and the maturity of the softwares ...
3
votes
3answers
146 views

Testing for disk write

I'm writing an application for storing lots of images (size <5MB) on an ext3 filesystem, this is what I have for now. After some searching here on serverfault I have decided for a structure of ...
21
votes
10answers
18k views

How to make `rm` faster on ext3/linux?

I have ext3 filesystem mounted with default options. On it I have some ~ 100GB files. Removal of any of such files takes long time (8 minutes) and causes a lot of io traffic, which increases load on ...
7
votes
1answer
2k views

Best practices for choosing fs block size on ext3/4?

I never really pay block size much attention but obviously there can be benefits to choosing something other than the default. I am looking for a good "best practices" paper on choosing block size. ...
2
votes
1answer
1k views

Optimal Directory Depth vs Number of Files in a Directory for ext3?

To access files on ext3, and (if dir_index is not being used) what is the optimal directory depth vs the number of files per directory? Does file size effect this? The total number of files might be ...
6
votes
1answer
1k views

ext3 file system performance tuning: what metrics to monitor

I have a high-IO application that is working, and scaling well to date. Over the past few months we've been trying to look down the road and predict where our next bottlenecks will occur. One of ...