[OpenAFS] Performance issue with "many" volumes in a single /vicep?

Steve Simmons scs@umich.edu
Wed, 24 Mar 2010 16:26:11 -0400

On Mar 17, 2010, at 5:48 PM, Steven Jenkins wrote:

> Could you provide filesystem information? (e.g., what filesystem, what
> parameters given/used by mkfs, etc)  That information is often quite
> significant.

So smart of me to drop the note and then leave for vacation. Selected =
file system values from tune2fs:

Filesystem features:      has_journal ext_attr resize_inode dir_index =
filetype needs_recovery sparse_super large_file
Filesystem flags:         signed_directory_hash=20
Filesystem OS type:       Linux
Inode count:              91553792
Block count:              366210812
Reserved block count:     0
Free blocks:              189941418
Free inodes:              89015063
First block:              0
Block size:               4096
Fragment size:            4096
Reserved GDT blocks:      936
Blocks per group:         32768
Fragments per group:      32768
Inodes per group:         8192
Inode blocks per group:   512
Reserved blocks uid:      0 (user root)
Reserved blocks gid:      0 (group root)
First inode:              11
Inode size:	          256
Required extra isize:     28
Desired extra isize:      28
Journal inode:            8
Default directory hash:   half_md4
Journal backup:           inode blocks

> In particular, since you mention Linux, I'm guessing you're using
> ext3.  With journaling (ie, ext3 and not ext2)?  With directory
> hashing turned on?

Ext3, with journaling, with dir hashing on.=