similar to: degrading performance

Dear all, I have a crash test cluster where i?ve tested the new version of GlusterFS (v3.7) before upgrading my HPC cluster in production. But? all my tests show me very very low performances. For my benches, as you can read below, I do some actions (untar, du, find, tar, rm) with linux kernel sources, dropping cache, each on distributed, replicated, distributed-replicated, single (single

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

hi Geoffrey, Since you are saying it happens on all types of volumes, lets do the following: 1) Create a dist-repl volume 2) Set the options etc you need. 3) enable gluster volume profile using "gluster volume profile <volname> start" 4) run the work load 5) give output of "gluster volume profile <volname> info" Repeat the steps above on new and old

On Sep 20, 11:50 am, wbrana@gmail.com wrote: > On Sun, Sep 20, 2009 at 3:47 AM, Daniel J Blueman > > <daniel.blueman@gmail.com> wrote: > > On Sep 19, 7:20 pm, wbr...@gmail.com wrote: > > >> RAID details: > >> > >> md8 : active raid10 sda7[0] sdd7[3] sdc7[2] sdb7[1] > >> 62925824 blocks 256K chunks 2 far-copies [4/4] [UUUU] >

Looks like maildir can't be used very realiably without quite a lot of locking. Writing and scanning the directory would have to be locked, but reading wouldn't (as long as the file hasn't been renamed which would require scanning to find it). So much for "no locks needed".. The problem is that opendir()/readdir() may temporarily not return some files if there has been

Hello, I''m quite interested in ZFS, like everybody else I suppose, and am about to install FBSD with ZFS. On that note, i have a different first question to start with. I personally am a Linux fanboy, and would love to see/use ZFS on linux. I assume that I can use those ZFS disks later with any os that can work/recognizes ZFS correct? e.g. I can install/setup ZFS in FBSD, and later use

Hi, I noticed that `df -i` on btrfs returns zero values, much like it does for vfat and - I think I remember - reiser3. It would be nice if btrfs could count the number of inodes on a volume, to get an overview of just how much dust I am collecting. Is it doable? Filesystem Inodes IUsed IFree IUse% Mounted on /dev/loop0 0 0 0 - /lo/kernel2 Jan

Hi all, I have a problem with samba : I can create files, but can't create directories. The server has many shares, on seperated disks. We consider two of them : one 2Tb share and one share with more than 7Tb. Samba configuration is good, and works on many other servers, and on this one except for the large share. Permissions are correctly setted up too. I can read/write files and

Hi! I?m about to migrate a system whith 5000 accounts whith (~ 500GB) from "postfix/courier-imap/maildrop/mysql" to a new hardware whith "postfix/dovecot/dovecot/mysql". I?ll make a separate partition (raid 1) for the mail spool (/var/spool/vmail) and want to now what type of filesystem to use on it to increase performance. I read that XFS is a good choice, but is not

Hi. I recently mentioned in several posts, that I'd tended to use mbox rather than maildir, because you don't loose so much space (due to always allocating full blocks per maildir file and thus per mail). I made some tests of my archive, which consists of some 3,4 million mails at a total of 42GB). Most of these mails are probably normal sized, but there are also some with bigger

Hello, I used iproute2 to do iif specific routing on wifi routers with 2 wifi 802.11b interfaces on non overlapping interfaces. I set rule as follows on router-2 (shown below) use table 100 if incomming interface is wlan0 use table 200 if incomming interface is wlan1 all routes in table 100 have wlan1 as oif all routes in table 200 have wlan0 as oif --wlan0--

Hey - I have a few ajax calls in my app that I''m not really sure how to degrade to html. For the most part, these are functions that insert or remove elements to/from the dom. For example, I have my own edit-in-place on the data, which is called by start_edit action. This action renders an rjs template that replaces the view with an edit form. # view (partial) <tr

Ok i''ve done a bit of hunting around and I can''t find much documentation on how ensure an ajax call through an rjs file degrades with javascript off. Essentially, if javascript is off, I want to refresh the page and pass a variable from the controller to the page the user is on. Not use the rjs file. At the moment i have this: <%= link_to_remote("Advanced Search",

Is there a RoR best practice wrt determing in a visitor''s browser has JS disabled? Is there even a way to find out? I''ve got a couple of pages in my app that are not going to degrade gracefully at all. I really need to point a visitor who has JS disabled down a seperate path. Any ideas? Thanks, Bill -------------- next part -------------- An HTML attachment was scrubbed...

Hi, Since a --direct-io feature was requested a few times the past decade with little response and the actual patch is quite trivial, I patched both v3.0.9 and master branch and included the patches here. If this functionality is acceptable I don't mind spending the additional effort to update the documentation, etc. Beware that the underlying filesystem needs Direct I/O support,

I was wondering if anyone can tell me if it is possible to mount a drive (single partition) to a nested directory on an existing Samba mount point and have the entire structure considered one drive? The situation is this. I have a large drive mounted to a share called "/pub". This has been identified as my Samba mount point and all works as it should. What I would like to do is

Hi All, We are soon to migrate our mail server from one piece of hardware to another and we would like to take this opportunity to optimize things. As a result, we would like to replace "uw-imapd" and "qpopper" with "dovecot". The version we will be installing is 1.1.13-2, as this is what is available through the latest Debian stable backports. We will also be using

Still a semi-newbie, but so far I''ve managed to solve most things with a bit of help from the Agile book, some googling around, and a bit of trial-and-error, but I''m really stuck with this one (very much an Ajax newbie): I know how to gracefully degrade an AJAX newpost type call so it can appear inline or (for those without JS support) go to a new page (put an ":href

I can just be sittting, doing nothing, and I hear the sound of my hardrive head moving. Just every so often. Like some process is writing a log. I have looked in /var/log and do see occational updates to acpi and messages, but that does not account for all the clicks. Is there somewhere else to look for logs? I would really like to know what process has something to remember.....

How can I make it so my users can not create folders with spaces in them? Or allow them to create such folders but rewrite them on the hardrive with a "_" or some other symbol. I have looked threw the wiki but couldn't find anything about folder name restrictions or folder name rewriting (rewrite the space to a "_"). Im having problems with some of the expire and compress