I'm built an distributed application, and now I want to take some metrics to show how my application works. These metrics includes the time of computation, the time of communication and the amdhal law. I would like to know what tests can be done to show the performance of the application. So, I'm searching for a book or document that shows me what type of tests can be done to show the performance of an application.
View 2 RepliesLast year I was looking into fault-tolerant distributed file systems and I recall one kernel-based system that required a physical partition on each machine in the cluster, but would treat it as a single volume - ie. a write on one server would appear on the disk on all the servers.Unfortunately I didn't bookmark the specific system I was looking at, and now a year later I can't remember the details.What I don't want is NFS - a single file server with a file system mounted on various machines. What I do want is mirroring - one disk shared among multiple servers, so that if one server dies, it doesn't make any difference to the rest of them.
A bit of investigation turned up Red Hat's GFS, which kind of looks like what I want, but looks more and more like an NFS model to me. I was wondering what everyone's opinion of the various options out there were.
What would be a good book/manual to read to learn more about linux o.p. systems? and how to use them.I have to add I may not have such a good internet connection I might end up with free dial up (Bummer)so I'm not sure if a link will do.I will end up at the library anyway. so if you could suggest something that would be good, I'm not really looking for the history but more like how to use, maybe the terminal and such?.
View 4 Replies View RelatedI have gotten my DNS servers up and running, and query against them using dig returns the proper information. How do I get the information to be distributed across the Internet now?
View 1 Replies View RelatedI'm trying to understand how deb packages work. Are there source debs?I assumed there were, but from[URL].. I see that source is distributed in a GZipped file.
View 3 Replies View RelatedI'm planning on setting up a new Linux box expressly for distributed computing (BOINC, SETI@home, etc.). All things being equal, what's better- More clock cycles or more cores?
View 4 Replies View RelatedI'm looking for the best distributed filesystem to share my home directory among all my computers, and I'm interested in what advice I could get here.
Here are my requirements:
1) It must be completely POSIX compliant, because I've noticed that many programs will break if not.
1a) Must support file locking (i.e. flock()) preferably sharing lock advisories between the clients
1b) Must support hard links, and be able to recognize a hard link connection by looking at the number of references
2) It must have encryption, and security suitable for it to be exposed to the internet.
2a) I would like to use password-less authentication. Preferably SSL client certs (HTTPS style). Static keys (SSH style) are also fine. I would begrudgingly accept a password authenticated system if it used a fairly secure challenge/response algorithm if it met all of my other requirements. (Extra points if it supports PKCS#11 and thus supports smart cards)
2b) Encrypted traffic must be an option.
2c) No thanks to kerberos. It was too annoying to maintain when I tried it before and I don't like passwords.
3) Preferably, it should be stable and fairly easy to maintain.
4) Optionally, it should be tolerant of network drops, and reconnect automatically as needed, because my laptop wireless is a little flaky sometimes.
A bunch of hosts all connected to each other.I'd like to have a directory where a group of hosts can dump files and all access, synchronising with each other their changes automatically and transparent to the user.How can I have it so that rsync updates both ways?
* host A asks host B for a list of files, modification dates, checksums
* then applies the rules to select which files it will fetch from B
--> if A owns the file then do not get modifications from B
--> files differ, then select newer file
* then fetches them
* and so on for each host...
I have a fedora 10 live CD currently i m running win XP with SP2 with the following configuration
Pentium 4 2.4 GHz
512 MB of Ram
160 GB HDD
INTEL d845 GVSR mother board
When I pop the live CD and reboot my system, the fedora 10 starts loading, it comes onto a select proper keyboard and after I clicked on the Next button tha app hangs. I used distributed CD and loaded iso images - result the same.
I'm using a program on a group of servers which contact each other using SSH. I've got the authentication keys setup with no password but when one box tries to connect to another it wants the password for the user it's trying to communicate with. So the main problem is there is a lot of communicating within this program so it's important to allow each box communicate with each other without the use of a password. I'm using OpenSSH 4.3 with OpenSSL 0.9.8 on Red Hat Enterprise Linux Server 5.3 (Tikanga). I'm also using SSH on Ubuntu(Intrepid) to connect to these servers at the mo as i don't have direct access to the boxes.
View 4 Replies View RelatedI need PDF version of this book SUSE Linux Toolbox 1000 Commands for openSUSE and SUSE Linux
anybody has it?
Suggest me the best book for learning more about directories in ubuntu filesystem
View 5 Replies View RelatedI want to know the details about the implementation of distributed firewall in a local area network
View 5 Replies View Relatedis there a way to set-up a file system, where you have multiple nodes (PC's) linked to one storage pool? ZFS seems to support this idea with multiple disks on one node, but could you connect multiple nodes in this manner?
View 3 Replies View RelatedI am currently looking for a file system that needs to be distributed over several nodes and need redundancy, like RAID5, and the ability to grow if needed, like LVM. Also not all nodes are going to be located in the same data center, but I guess that's not that important as long as the connection between DCs is sufficiently fast. I am currently looking at AFS, Coda, GFS and OCFS to see if they have what I need.
Edit: I just figured that it may be better to have the RAID5-like setup within one location, and have RAID1-like mirroring between the locations. That would probably better for performance, right?
I'm starting in the forum, than if i commit a mistake.
I'm looking for a conceptualized book or manual about SAMBA?
trying to install a dvd of Openbook, a distribution of ebooks from the gutenberg collection. running debian lenny amd64.i have multi and uni in repositories enabled. equivs is installed, as well as libglib1.2ldbl libglib1.2-dev and libglib1.2-dbg. i looked in /dependencies/deb/ folder on the dvd and found these packages gdk-pixbuf_0.22-1_i386.deb and gtk+_1.2-1_i386.deb. tried to install gtk+.... after finding synaptic shows no gtk+ packages, only gtk... with the expected error that i am running the wrong version of debian to install x386 apps. looked online and found that lenny amd64 will run 386 apps in compatibility mode. how does compatibility mode work?
View 2 Replies View RelatedGoing through book, "Guide to UNIX Using Linux". I am doing one of the projects that has me writing scripts to join files. Here is my pnumname script and I am extracting the programmers names and numbers from the program file and redirecting the output to the file pnn. I then created a joinall script where I am trying to join the files pnn and pnumname and redirect the output to pactrep. When I run the script sh joinall and use less to display the contents of the redirected file pactrep, I get an error- join: extra operand `pnum'
Try `join --help' for more information.... I went to the man pages but I still (obvious) do not have a solid grasp.
#=======================================================
# Script Name: pnumname
# By: J.D.
[code]....
I have many years of experience with DOS and Windows, but this is my first dabble in Linux, in particular Fedora 13. The OS is great, but my lack of knowledge makes me uneasy. Is there a good book available in HTML or PDF format that covers. The basics, and is relevant to Fedora 13?
View 10 Replies View RelatedI am very new in linux/aix scripting. I request you all to give me efficient pdf book or documentation for learning scripting.
View 2 Replies View RelatedI wanted to install this package to convert one Unix book into pdf. Since I have not set up the internet in the debian, I download the .deb files in winxp and transfer these files to my pen drive and then access it in the Debian. So I got all the 'depends' packages for the chm2pdf from the Debian Packages site and tried to install. Console was still asking for more dependencies. If I have got all the 'depends' packages which are required for chm2pdf, then why does it give problems ?
View 3 Replies View RelatedI've been switched to a new department at work and am totally clueless when it comes to scripting in bash. When I told them I was a fast learner, I didn't think they'd throw me into the deep end of the pool so fast. So to make a long story short. What is a great book to start learning scripting in bash? My supervisor already gave me a simple task to do. Conceptually it sounds quite easy in my head, but actually writing out a script is a bit more daunting and complexed than I first thought.
View 3 Replies View RelatedI have just upgraded to Ubuntu 10.4 and I need to get my Address Book and saved emails from earlier version.Can someone please tell me where they will be located
View 8 Replies View RelatedI have a Western Digital My Book World Edition external harddisk with blue rings. I filled it up and now want to delete the data and start over. I'm set in my ways and have been accustom to reformatting harddisks periodically (sector maintainance, etc.) It's worked for me as I've luckily have not had a disk crash in 25 years.My webapp is not helping me with the reformat and neither is Western Digital tech support. I've heard that it was factory formatted with something called Linux ext3. Does this make sense? Has anyone had any experience with reformatting external harddisks being used as a NAS (home use).
View 3 Replies View RelatedI've somehow got it into my head that it's possible to share CPU cycles, though I've no idea where from.So basically that's what I'm asking - is it actually possible to tell one system to 'donate' it's unused CPU time, cycles, whatever they are, for another's use?
View 4 Replies View Relatedhow would you automate install/upgrade to a package to 200 servers. and obviously not by going to each system physically.
Answer: NFS share , using perl script and rpm utility. But i have not done such kind of install/upgrade so my knowledge is limited.
but i want to know how would i do that on Redhat Enterprise or CentOS.
I have winxp and win 7.I want to install fedora core 12.I tried but I could not install.How can I install fedora core 12 with winxp and win 7.
View 3 Replies View RelatedI am trying to use GKrellM [URL].. to monitor my system's fans/temperatures (I am trying to undervolt the fans a bit to make the systems quieter), but there don't seem to be any sensors available. I have lm_sensors installed.
View 2 Replies View RelatedIs the mount point for external media (like USB) always /media?
Because in a Debian system, if I plug in any USB device that goes to the /media folder. So is it the case with all the other Linux flavors like Fedora, Ubuntu, etc. If a USB device is automatically mounted will it always go to the /media directory?
I am not concerned about the name of the devices. I am looking for every external media (like USB) to be listed under /media directory so that my code can run on any flavor of Linux.
I need a new backup strategy for my two machines:
One machine all WinXP
Second machine: Win7 on one hdd; Ubuntu on second hdd
Backup target drives:
Two new WD Caviar drives in vented external enclosure with fan (no RAID)
1) How do I format the target drives to accept Clonezilla images of all three OS's?
2) How do I format the drives to accept incremental data backups from all three OS's done between scheduled imaging?
Second machine (Win7 & Ubuntu) is not yet running, still in delivery box.