similar to: btrfs benchmarks

Hi, For a medium term project, I''m thinking of working on transparent compression for Btrfs. Please give any hints and comments on how we would want to go about this, the features we would like to have and some common pitfalls to avoid. Is looking at how it''s done in Reiser4, a good idea ? Can we allow the compression algorithm be configurable on a per file basis, may be

Hello, My computer locked up and I had to press the reset button. Ever since then I can''t mount the btrfs filesystem, here''s the output: [ 37.645583] ------------[ cut here ]------------ [ 37.645598] WARNING: at fs/btrfs/free-space-cache.c:1887 btrfs_remove_free_space+0x329/0x350 [btrfs]() [ 37.645600] Modules linked in: btrfs zlib_deflate libcrc32c ext4 jbd2 mbcache crc16

Peter Nelson wrote: > Hans Reiser wrote: > > >Are you sure your benchmark is large enough to not fit into memory, > >particularly the first stages of it? It looks like not. reiser4 is > >much faster on tasks like untarring enough files to not fit into ram, > >but (despite your words) your results seem to show us as slower unless > >I misread them.... >

Hallo, we have a clinical system that generate lot of files that once written are never changed. This file consume lot of disk and tape space*, so my idea was to compress this files. The problem is that it can happen, that the users have to open this files later. Is there a VFS module for samba that show gzipped** read only files as if they were standard files ? Bye Andreas * Disks are

http://sfgate.com/cgi-bin/article.cgi?f=/c/a/2006/10/10/BAGERLM3RR15.DTL Link posted on Slashdot. I guess this may mean that reiser4 will never ever make it into the mainline kernel let alone RHEL/Centos

>>> Hi all >>> >>> Thanks to Milan I am able to get further with xen and reiser4 >>> >>> - In swap line 6 and 7 status_flags.c >>> >>> #include <linux/bio.h> >>> #include <linux/page-flags.h> >>> >>> >>> - PACKED is redefined, but the definitions are the same, so the gcc >>>

Unfortunately it is a bit more complex, and the truth is less complementary to us than what you write. Reiser4's CPU usage has come down a lot, but it still consumes more CPU than V3. It should consume less, and Zam is currently working on making writes more CPU efficient. As soon as I get funding from somewhere and can stop worrying about money, I will do a complete code review, and

Currently there are 3 different capitalisations of btrfs: used in printk()''s, BTRFS: (3 occurences), Btrfs: (1 occurence) and btrfs: (77 occurences). It''s best to have them all the same for consistency, so we canonicalise the two minority cases to btrfs:. Signed-off-by: Chris Samuel <chris@csamuel.org> --- fs/btrfs/disk-io.c | 4 ++-- fs/btrfs/inode.c | 4 ++-- 2

Here is a small btrfs vs. ext4 benchmark with kernel 2.6.37-rc1. compilebench with options -i 10 -r 30 on 2.6.37-rc1 btrfs ========================================================================== intial create total runs 10 avg 73.11 MB/s (user 0.34s sys 1.96s) create total runs 5 avg 49.53 MB/s (user 0.41s sys 1.62s) patch total runs 4 avg 22.13 MB/s (user 0.09s sys 1.79s) compile total runs

Hi there, Just gave 0.13 a spin against XFS (both with default mkfs options) on my SATA tower and was impressed by how much performance has improved since last time I played with it (v0.5)! It pretty much matched XFS for I/O performance and had much better file creation/deletion performance. http://www.csamuel.org/2008/03/23/btrfs-013-and-xfs-benchmarks cheers, Chris -- Chris Samuel :

Hi, Some questions here : 1. Is there a way to compile kernel 2.6.10 or 2.6.9-mm1 with xen 2.0? I tried both (with mkbuildtree from linux-2.6.9-xen-sparse), and both failed (on different places). My primary goal is to use reiser4 on both xen-0 and xen-U kernel, so I''m more interested in -mm kernel. 2. If I use kernel 2.4.27 (xen-U), top doesn''t show correct cpu usage

I've been playing with ocfs2 in local mode, and was really suprised how fast it was. I was playing with extracting a linux distribution on my hardrive that was tar gzipped (GZIP=-1) and extracting it onto a different hard drive. This was with kernel 2.6.28. ocfs2-5m6s reiser4-4m19s reiser3-6m38 jfs-8m18s ext2-4m7s ext3-7m18s xfs-6m29s ext4m55s I noticed the delete times were very slow with

Please be patient with my ignorance if what I am asking is meaningless in any way. I am not too technically knowledgeable about filesystem internals but I am willing to learn. (I thought of posting to linux-ext4 but did not want to intrude within the technical threads with my layman thread.) From Wikipedia > ReiserFS article > Design section: [quote]ext2 and other Berkeley FFS-like

Hello, my name is Marek Blaha, I work on yum4 / DNF for CentOS. I'll need to update pages on Configmanagement SIG, YUM4 section. https://wiki.centos.org/SpecialInterestGroup/ConfigManagementSIG/YUM4 my wiki username: MarekBlaha Regards and thanks, Marek -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hi Chris, et. al, I''ve recently come across cppcheck (static analyser for C code) and ran it on the current btrfs directory from Linus''s repo and it''s reported the following potential issues: linux-2.6$ cppcheck -q fs/btrfs/ [fs/btrfs/compression.c:343]: (error) Data is allocated but not initialized: cb [fs/btrfs/compression.c:583]: (error) Data is allocated but not

Hi@all, (RedHat 9, Samba 2.2.8a) I want to integrate a Samba Server in to a existing Windows NT Domain. I joined the domain, I see the Server, if I look into the Network, but I can't access the Shares! smbd, nmbd and winbindd are working very fine... the directory /home/test exists the problem I have: if i make a ping to LINUX from my W2K Workstation I get the message "Unknown

Hi, First, sorry if this isn''t the place to get this kind of help... If not, I appreciate some link , forum, where I can try get some answers... My problem: * Using btrfs + compression , flush of 60 MB/s take 4 minutes.... (on this 4 minutes they keep constatly I/O of +- 4MB/s no disks) (flush from Informix database) The enviroment : * Virtualized environment * OpenSuse 12.1 64bits,

-----BEGIN PGP SIGNED MESSAGE----- Hash: RIPEMD160 [cc'ing 4 mailing lists, please reply to *one* list only!] hi, every now and then i'm running some benchmarks on filesystems i really use...here are the results: http://nerdbynature.de/bench/prinz64/2.6.14-rc2-mm2/bonnie.html http://nerdbynature.de/bench/prinz64/2.6.14-rc2-mm2/ may it be of some help.... thanks, Christian. PS:

A few months ago we bought a GIS software. It is running under Windows XP Pro. This software has stored its databases in dbf files, located on one samba share. Executables reside on each WinXP Pro client. The software simply uses dbf databases located on samba share. Each session of the gis opens about 500 files. I have four workstations that are allowed to run this software. [kirchner]

While untar''ing an image to an sd card via a reader, I got the following bug. The system also has a btrfs root, and a whole swath of processes went into uninterruptable sleep. I was able to poke around via ssh and sysrq, and already had netconsole set up to capture the bug. Root fs is on /dev/sdi1, and /dev/sdj2 is the card reader which was the target of the untar. [29571.448889] sd