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Search found 577 results on 24 pages for 'christian hoglund'.

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  • Alternatives for heapdumps creation with higher performance than jmap?

    - by Christian
    Hi, I have to create heapdumps, which works nice with jmap. My problem is, that jmap takes very long to create the heapdump file. Especially when the heap is getting bigger ( 1GB) it is taking too long. One situation as example: When the server gets into trouble with the heapspace, I want to restart it automatically and create a heapdump before the restart. This works, but takes too long to write the heapdump. This way the server is down for too long. The heapdump creation takes longer than one hour. I know about -XX:+HeapDumpOnOutOfMemoryError, but most of the time I can find the memory problem before the exception is thrown by the jvm. Is there an alternative to jmap which writes the heapdumps faster? A special solution for the example above would also be appreciated. This question is a mix between programming and system-administration, but I think I'm at the right place here.

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  • I need something substantial to do [on hold]

    - by Christian Delapena
    I'm a 19 year old computer geek who was recently exposed to Linux. I know quite a bit of it now and would like to do something substantial with it. I've visited websites like openhatch where you can get started on opensource projects but I'm more interested in something Linux-specific like hosting a website or tracking some important operation. Maybe running a script that will give me data on something important. I don't know. I'm essentially bored and I want to put my knowledge and love of Linux to good use. Someone please point me in the right direction.

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  • Sending output to both bluetooth headset and normal speakers - Windows 7

    - by Christian Mann
    Hey, I have a bluetooth "headset" (it's more like a speaker with a microphone on it, but it registers as a headset) and I want to play music through it. I also want to play the same music through the "normal" speakers on the laptop. Is this possible? If so, is it possible to play two different streams on each speaker? Say if I wanted to DJ a party or something, I'd want to hear the upcoming song and mix it before sending it live.

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  • Putting codes in email subjects

    - by Christian W
    We send out large quantities of email to our customers (work environment surveys). Sometimes our mailinglist for a client isn't quite up to date and we get bounce mails (address not found and such). However, since these all bounce back to the same address it's difficult to keep track on which bounce belongs to which client. (The email subject is usually pretty generic, like "Welcome to the work environment survey") This is why I would like to insert a identifier in the subject line of the email. So the subject would be "Welcome to the work environment survey (1234)" where 1234 is a number identifying the client/survey. We already rank pretty high because of the way our mailer handles sending the mails. Usually we contact the clients it-dept to get them to whitelist us in their firewall/spamfilter. Would this increase our spamscore in spamfilters?

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  • Save Website To Disk

    - by Christian
    Hello everyone! I have a very poor internet connection when I'm living at home. The only time I have a good internet is at college. When I get home, the most mundane task like opening a web-page becomes a five minute stress-test. So what I was thinking was to download the web-page, for example superdickery. I was wondering what the best method would be to download the entire image archive of the page? Would this be illegal, if I did this? It's just that I don't want to be frustrated every time I just want to load a simple jpeg image.

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  • Mac OS X Duplex Printing Paper Handling Oddness

    - by Christian Lindig
    I like to print on stationery with a pre-printed letterhead using the Preview.app and a duplex-capable HP PostScript (Color Laserjet 4700) printer. One would think that pre-printed stationery could be placed into one of the trays and then printed on front and reverse side. Unfortunately, the print dialog handles one and two-paged documents differently: the stationery needs to be placed differently into the tray if the document contains one page versus when it contains two pages. This is not obvious when printing on plain paper but becomes obvious once you mark, say, the upper left front corner of pages and then print different documents on them. I checked the PostScript code generated and indeed it is different for one versus two-page documents with respect to duplex printing, probably causing the difference in paper handling. Obviously this makes it difficult to print pre-printed stationery in duplex mode. I expected others to have stumbled upon this but could not find specific help so far. Any ideas? This is on OS X 10.6 and I checked two different printers.

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  • Google Chrome never renders fonts properly / no smoothing etc

    - by Christian Ivicevic
    A while ago I started using Chrome and no longer Firefox, however I found out something weird which maybe force me to return to Firefox if I can not fix this. I am coding a homepage and the output was in Chrome ugly, in Firefox not. I thought "ok this is maybe due to bad code"... however I found out that the same problems occurs on different sites like Facebook too. The font is not smoothed and it is not nice to read. Here is an example, although I have censored nearly everything... Bad Chrome Rendering Good Firefox Rendering You may need to open up in a new tab to see the errors in detail. Now I want to know, whether this is just Chrome trolling me or maybe something else. EDIT I tried it out under Ubuntu on my PC and it works well... seems to be an error on Windows/Chrome on Windows.

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  • Can I autoregister my clients/servers in local DNS?

    - by Christian Wattengård
    Right now I have a W2k12 server at home that I run as a domain controller. This has the extra benefit of registering every "subordinate" computers name in it's DNS so that I don't have to go around remembering IP's all the time. (And it let's me easily run dhcp also on my servers). I need to rework my home network for several odd reasons, and in this new scenario there is no place for a big honking W2k12 server box. I have a RasPI, and I have other smallish linux boxen I can use. (In a worst case scenario I'll use my NUC, but then I'll be forced to use my home cinema's UPnP-client for media... The HORROR!!) Is it possible to set up a DNS-server-"appliance" that somehow autoregisters it's own hostname.. Scenario: Router (N66u) on 172.20.20.1. Runs DHCP on 172.20.20.100-200 range. Server [verdant] of a *nix flavor on 172.20.20.2 Laptop [speedy] of W8 flavor on DHCP assigned Laptop [canary] of W8 flavor on DHCP assigned Desktop [lianyu] of Ubunto flavor on DHCP assigned What I would like is that all of the above servers (except possibly the router) would be available on verdant.starling.lan and canary.starling.lan and so on. This is how it works right now (except the Ubuntu box... I haven't cracked that one yet) because Windows just does this for you.. I would also be able to do this without any manual labor on the server. When I tell my box it's name is smoak it should "immediately" be available as smoak.starling.lan without any extra configuration on my part. How can I do this in a Linux (Ubuntu) environment? (Bonus comment upvote for naming the naming scheme :P )

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  • Need a redistributable edition of Free AVG

    - by Christian Mann
    So, I'm trying to install AVG on someone else's computer (with permission, I promise!) but their internet connection is spotty. The d/l is stopped and sent back to square one when the line goes down, so I need to download it from a good terminal, and then shove it on a flash drive or something and give it to them. Does anyone know of a place where I can download the full program--not just the installer?

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  • httpd, vsftpd and the annoying selinux

    - by Christian
    I have a CentOS 6.3 installed with httpd running and vsftpd but I am unable to balance permission between the user able to upload over ftp and their website working. What I do: I create a user with their home directory as `/home/username` I create a sub folder called `html` for their website I chown their directory `chown -R username:apache /home/username` I chmod their directory `chmod -R 750 /home/username` I chcon their directory `chcon -R -t httpd_sys_rw_content_t /home/username` and their website loads fine but they are unable to ftp, but if I do the following, they can ftp but their website doesnt load: chcon -R -t user_home_dir_t /home/username If I disable selinux, the user can ftp and the website loads. so what is the answer to keep selinux?

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  • Windows 2008 as home file server and more

    - by Christian W
    I currently have a freenas-unit as a NAS, and a Win2k8R2-unit as server. However I would like to consolidate these to units in one. What I really like about the freenas-unit is the ZFS filesystem. And the only reason I care about the ZFS filesystem is the easy way I can grow an existing filesystem just by inserting a new drive. How would this work in Win2k8? If I setup my unit with a separate drive as C: and a 1TB drive as D:. The D: would then be segmented into d:\Videos d:\Music d:\Pictures. When everything gets close to filling the storage-drive, I would like to expand the storage, but I wouldn't want to have E:\Videos or d:\Videos2 (using the NTFS folder mount thingy). I still want all my Videos to reside in D:\Videos and I want the OS to decide which drive it's going to be stored on... Some kind of on-the-fly jbod expansion :) Is this at all possible in Windows 2008?

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  • Where lies the soul of a computer?

    - by Christian
    When you take the system drive and put it in a new box, do you rename it or do you keep the name? And when you put a fresh drive in the old box, do you give it a new name? What is with upgrading? How many of the components do you have to change until a computer loses its identity? So a CPU is often described as the heart or the brain of a computer but where lies its soul? What determines its identity? The data on the system drive? The majority of its components? This might sound like a not-so-serious question and it probably is but whom of you didn't already face this problem?

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  • Hanging page loads every n loads - SOLVED

    - by Christian
    Hi Guys I recently moved my site to a new server (Apache 2, PHP5, MySQL5). The site is an Invision based forum. Every few posts / topics it just hangs. The data has been written because if you stop and reload, the post / thread is there. I thought it was a write issue initially, but nope. So, the data is written but the page load never completes. It doesn't leave the page where the data has been input. Whats the best way to trouble shoot this issue? The only thing I have done recently is reduce my MySQL timeouts, but I can't see that being an issue as the values are still big enough and there are no mentions of timeouts in the MySQL log. (For the record there is nothing in PHP's error log either) Thanks in advance! EDIT: I checked my server-status. It all looked ok, but I have a suspicion I was hitting my ServerLimit, so I doubled that. Also enabled my Keepalives. Will keep an eye on it. EDIT 2: Its now been a few days and this is still occuring. I have more info though; Apache is throwing seg faults, but enabling core dumps does not produce them. I have tried disabling the modules in apache but it just stops things from working. I fear it may actually be DNS related. If I watch Live Headers in Firefox, absolutely nothing happens during this 'hanging' period. After that, the responses come back fairly promptly. UPDATE (05/04): I built the latest versions of Apache and PHP from source, no luck. I then removed those and used the remi repo to update all my packages to the latest stable. Segfaults seem to have stopped, but the hanging is continuing. ini's are at; www.skylinesaustralia.com/php.ini www.skylinesaustralia.com/my.cnf www.skylinesaustralia.com/httpd.conf UPDATE - SOLVED! - The issue was having a gigantic query cache size in MySQL. It was 2GB, changing it to 64M sorted it. Thanks for all the help everybody, much appreciated!!

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  • syslog-ng fails to log on lxc host

    - by christian
    we are running CentOS 6 servers with multiple lxc-containers. For system logging we are using syslog-ng. After a while the syslog-ng daemon stops logging messages, but the daemon keeps running. This happens on the host and inside the containers (where another syslog-ng is running) as well. We could not find any patterns for the failure yet but we assume that it has something to do with lxc, because we don't have these problems on other hosts. We have the suspicion that these problems occur when more than on lxc-container is running and that only "new" processes can not log. We are running the following software versions: CentOS-Linux 6.4/6.5 lxc-0.7.5 syslog-ng-3.2.5 Do you have any ideas? Best regards trademesh

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  • How do I configure tinydns (with fefe's IPv6 patch) to listen on IPv6 address?

    - by Christian Hudon
    I'm setting up my network to support IPv6. I have static IPv6 addresses assigned to each interface of my router, and radvd advertising different prefixes on each interface. The next step would be to get my dnscache (from djbdns) working on IPv6. Said dnscache has fefe's IPv6 patch applied, so I assume it should work with IPv6. However, I can't find any documentation online on how to make the patched dnscache listen on IPv6. How do I configure tinydns and dnscache to listen on IPv6 too?

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  • Reinstall ruby (or just yaml lib)

    - by Christian Sciberras
    I've installed ruby 1.9 from source, and tried installing gem 'bundler': < gem install bundler > /usr/local/lib/ruby/1.9.1/yaml.rb:56:in `<top (required)>': > It seems your ruby installation is missing psych (for YAML output). > To eliminate this warning, please install libyaml and reinstall your ruby. > .... I've not been able to cleanly uninstall ruby (wtf?!), and installing libyaml at this point didn't help either. So it seems I've ended up with a fk-ed up server since I can't rollback nor fix the issue. Of course, I do have backups, but this situation is ridiculous nonetheless. Surely there must be a real fix?

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  • Mac OS X duplex printing problem: one- vs. multi-paged documents

    - by Christian Lindig
    I like to print on pre-printed stationery using the Preview.app and a duplex-capable HP Color Laserjet 4700 (PostScript) printer. The print dialog handles one and two-paged documents differently: the paper needs to be placed differently into the tray if the document contains one page versus when it contains two pages. This is not obvious when printing on plain paper but becomes obvious when front and reverse side of sheets are marked. Otherwise the first page would end up on the reverse side of the first sheet. I believe the problem is caused by the printer driver setting duplex printing to false (using the PostScript setpagedevice operator) when emitting a single-page document versus keeping it set to true when emitting multi-page documents. All this despite that duplex printing is always specified in the printer dialog. When printing a single-sided document, duplex=true and duplex=false seem to make a difference with respect which side of a sheet gets printed on. It would be also helpful if others could confirm the problem actually exists. I suspect this problem is not limited to specific printers. I'm on OS X 10.6 and I checked two different HP printers.

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