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  • Compacting solr indexes

    - by womble
    I've got a sizeable Solr server which is chewing a pile of disk. Whilst it is indexing a large amount of data, I'm wondering if there's any operation that will reduce the size of the index, by say dropping deleted-but-still-allocated data in a similar manner to a VACUUM FULL in PostgreSQL, or are the solr indexes kept fairly tidy, and my only option is to just allocate a pile more diskspace?

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  • How to enable caching on Apache / Ubuntu Linux?

    - by Jim Mischel
    I have a large (several megabytes) XML file that's updated rather frequently (every 10 minutes or less) and gets a lot of traffic. I'd like to implement some caching to reduce bandwidth and server load. Looking at the Apache documents, I see a dizzying array of configuration options that involve various combinations of mod_expires, mod_headers, and mod_cache (and variants). I end up running in circles and the results aren't what I expect. I'm comfortable editing the various configuration files if I have some idea what I'm supposed to change. But at the moment I'm poking around in the dark and that's never a comfortable feeling. So, perhaps if I describe what I want, somebody here can take me by the hand and say, "This is what you need to do." Periodically, this file, call it "stuff.xml" is updated and a new version copied to the directory. The external url would be, for example, http://example.com/stuff.xml. Understand, this part works. Whenever I request the file, I get the expected result. But the file is big and I want to save bandwidth, so first I'd like to implement conditional GET semantics with the If-Modified-Since header. How do I do this? I've enabled mod_headers and mod_expired and added the <FilesMatching> section in my httpd.conf as recommended in countless examples I've seen online, but that didn't change the behavior when made a conditional GET request. I always get a status 200 with the entire document. So how the heck do I implement this? That'll cut down on neeless transfers. I'd also like to limit the amount of data transferred. Seeing as this is XML, gzipping it should save me 50% or more. My next step would be to somehow gzip the file and, if it's not too difficult, store it in memory. That'll cut down on per-access data transfer, and also reduce disk transfers. So how do I implement this type of caching? Thanks in advance.

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  • Stream audio source from Mac OS X as MP3

    - by Adam Backstrom
    I'd like to broadcast audio from my Mac desktop to my Palm Pre, as the Pre is more portable and I can use it in the kitchen, or while I'm exercising, and so on. I can already capture the audio using Soundflower, but how might I create an MP3 stream out of the audio input device? For all intents and purposes, Soundflower can reduce this question down to, "How can I create an MP3 stream from the built-in microphone on my Mac?" as the answer can be applied equally well to iTunes output.

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  • How do I get windows 7 to go full screen in boot camp?

    - by Ryan Michela
    I'm running Windows 7 on an iMac using Bootcamp. At the native resolution of 1290x1200, the desktop fills the entire screen, but when I run games at a lower resolution or reduce the suze of the desktop the visible area is reduced and a large black border surrounds the display. I want to run 1024x768 full screen, not letterboxed. Is there a way to do this? I suspect a problem with the drivers.

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  • Experience in migrating from Apache to nginx?

    - by Julien
    I'd like to get some feedback about a migration From Apache to nginx. My goal is to reduce the memory footprint of the web server. Currently, I use the following modules.features on Apache: multiple virtual hosts Server Side Include Fast CGI Please share your experience: problems during migration, benefits after migration (was it worth it?), useful modules for nginx, etc.

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  • SQL Server without Powershell

    - by rwallace
    I'm trying to install SQL Server 2008 Express Edition, and it's demanding Windows Powershell and refusing to proceed with the installation. Is there any way to get it to install without Powershell? (The reason I'm asking is not so much for myself personally as to reduce the number of headaches through which I'm going to have to drag other people when I tell them my program needs SQL Server.)

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  • Extracting and re-combining audio from a video

    - by waitinforatrain
    I'm fed up with Vegas, Premiere, Pinnacle, SoundForge and all of the other editors I've tried. I'm trying to modify the audio of an AVI file, but all of the editors I've tried insist on re-encoding the video when I save the changes, and either reduce the quality or take hours. Is there a way to just extract the audio stream from a video with ffmpeg, edit it in an audio editor and then recombine the saved changes with the video?

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  • How to install Dvorak Type 2 (ii) German on Ubuntu using Gnome

    - by Peter Lustig
    Currently I am using standard Dvorak on Ubuntu 13.10 and Gnome 3.10. Unfortunately, writing Umlauts (ä,ö,ü) in German requires me to switch to QWERTY/QWERTZ frequently or forces me to not write those umlauts (which looks strange to German native speakers). Is there a way to use Dvorak Type 2, including the umlauts, but otherwise using the standard English layout on Ubuntu with Gnome? I'm a fast typer on standard English Dvorak and would like to avoid fully switching to German Dvorak as this would (at least temporarily) reduce my typing speed.

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  • Latency in TCP/IP-over-Ethernet networks

    - by aix
    What resources (books, Web pages etc) exist out there that: explain the causes of latency in TCP/IP-over-Ethernet networks; mention tools for looking out for things that cause latency (e.g. certain entries in netstat -s); suggest ways to tweak the Linux TCP stack to reduce TCP latency (Nagle, socket buffers etc). The closest I am aware of is this document, but it's rather brief. Alternatively, you're welcome to answer the above questions directly.

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  • What can be done in Windows 7 that can't be done in Windows XP?

    - by emddudley
    In Jeff Atwood's latest blog entry on Windows 7 he talks about getting people to move off Windows XP. What, specifically, can be done in Windows 7 that cannot be done in Windows XP? I'm not looking for usability or GUI improvements, unless they happen to significantly reduce the time that it takes to perform tasks that were previously prohibitively time consuming.

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  • Plesk Postfix Mail Server 9.5.4 very heavy load, 1000s of processes

    - by Eugene van der Merwe
    Our Plesk Linux Ubuntu 64-bit mail server has extremely high load and we don't know how to isolate it. The load was okay will two weeks ago but in the last two weeks it's seriously deteriorated. The mail server has been running for years and we have had sporadic performance issues. Normally we reduce the load by turning off all SPAM checks until the problem is sorted (which sometimes resolves itself). Currently we have turned of real time block lists, SPF checking and we have attempted to turn off SpamAssassin. No matter what we do the SpamAssassin check box stays ticked in the GUI. Out of desperation we have done /etc/init.d/psa-spamassassin stop. For years we haven't been able to do SpamAssassin because it kills the server. We would like to use it but performance is more important for now. We cannot turn off Greylisting. The moment we turn off Greylisting our help desk is inandated with calls. Out of desperation we investigated truncating the Greylisting database which is now 2.5 GB big but we abandoned this after noticing turning of Greylisting doesn't improve the performance at all. We have no anti-virus. It's just more load and Dr. Web never really worked that well for us. But we'll try that if it will make a difference. We have implemented Postfix Anvil. This seems to have made the situation worse so we disabled it. We’re not sure if this is the case. Our current mail server is configured to forward all SMTP to a relay server. We did so to reduce the load. This helped a lot because outgoing queues are generally empty. We are running in an Expand configuration. The mail server has about 12 000 accounts of which maybe half are active. We have read through this document: http://www.postfix.org/STRESS_README.html but there are too many settings and we don’t know which ones to choose. Please assist urgently. We need advice on how to fix this problem before all our clients abandon is. The only clue we have is that there are 100s of these processes: 30 13205 1 0 13:18 ? 00:00:00 /usr/lib/plesk-9.0/postfix-queue 127.0.0.1 10027 before-queue 30 13207 1 0 11:38 ? 00:00:00 /usr/lib/plesk-9.0/postfix-queue 127.0.0.1 10027 before-queue 30 13208 1 0 13:18 ? 00:00:00 /usr/lib/plesk-9.0/postfix-queue 127.0.0.1 10026 before-remote 30 13209 1 0 11:38 ? 00:00:00 /usr/lib/plesk-9.0/postfix-queue 127.0.0.1 10026 before-remote 30 13213 1 0 13:18 ? 00:00:00 /usr/lib/plesk-9.0/postfix-queue 127.0.0.1 10027 before-queue

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  • overusage of RAM in Hypervm VPS

    - by Mac Taylor
    hey guys I have a VPS running on hypervm in proceses list i have something like this > /usr/libexec/mysqld --basedir=/usr > --datadir=/var/lib/mysql --user=mysql --pid-file=/var/run/mysqld/ user : mysql which takes 150 mb RAM and then /usr/sbin/named -u named -t /var/named/chroot user : Named 50 mb RAM taken by this process how can i solve this overusage of RAM and reduce it . I have access to root and SSH

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  • Offline web font optimization tool

    - by avok00
    I have a few web fonts on my web site that I want to reduce in size. I tried http://www.fontsquirrel.com/fontface/generator with very good results, but I need an offline professional tool to rely on. Can somebody recommend such a tool? I am not a specialist font creator, so I need something like a wizard that can guide me through font optimization. Any suggestion is much appretiated! EDIT: To make myself more clear, I need a font subsetting tool

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  • Diagnostic high load sys cpu - low io

    - by incous
    A Linux server running Ubuntu 12.04 LTS with LAMP has a strange behaviour since last week: - cpu %sys higher than before, nearly equal %usr (before that, %sys just little compare with %usr) - IO reduce by half or 1/3 compare with the week before I try to diagnostic the process/cpu by some command (top/vmstat/mpstat/sar), and see that maybe it's a bit high on interrupt timer/resched. I don't know what that means, now open to any suggestion.

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  • Can the users can apply Windows update without local administrator rights?

    - by AAA-Super
    My users are running on windows XP 32bit. normally WSUS automatically download and notify them to select which update want to install in the past they were in local administrator rights,now I reduce them to user rights so now they can't see the yellow notification said updated are available. Is there a way to give users permission to see the yellow notification and they can select updates by hand without local admin rights or power users? Any advice would be appreciated Thanks

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  • Database Snapshots of Mirrored databases affect performance of Principal database?

    - by yrushka
    I have 2 servers set in Mirroring High-safety. One is Principal and another in Mirror. Currently I have 2 snapshots of a Production database (100 GB size) created on Principal server (for no_lock purpose of massive select processes) and 2 snapshots on the mirror server for the same database for reporting purposes. I know snapshots reduce performance of source databases but I am not sure if snapshots from mirror server have any impact on principal server's performance. thanks,

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  • Do I still need to send the "Expires" header, or can I assume that web caches understand "Cache-Cont

    - by chris_l
    I want to reduce the overhead caused by HTTP headers to a minimum, so I'd like to avoid the "Expires" header, and use "Cache-Control" only - or maybe the other way around (I'm planning to send very short HTTP responses to browsers, so the answer to this question doesn't fully apply here: My headers account for a significant percentage). AFAIK, the "Cache-Control" header was standardized in HTTP 1.1, but are there still web caches/proxies, that don't understand it? Note: This is a sub-question to my stackoverflow (bounty) question

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  • How do I change colors on-the-fly in mintty?

    - by Thomas L Holaday
    How do I change the colors in a Cygwin mintty session which is already open? Is it possible? Use case: Under environment-imposed time constraints, multiple terminal windows have been opened without forethought. In order to reduce the risk of typing the commands for system A into the terminal for system B, it would be nice if they were different colors. Is there some escape sequence or whatnot that can change the color scheme for a running session?

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  • Is there a way to download all google webfonts in web font formats

    - by wayne
    They simple just have ttf in the repository and i am looking for a less painful way then just do change the browser referrer and download them one by one. As far as i understand it the conversation, as described in the google wiki takes effort and steps to reduce filesize ... so i just can't batch convert them. I simple want the exact files that google serves browsers for localhost (without internet) use. woff, sot, svg ...

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  • Firewall - Preventing Content Theft & Rogue Crawlers

    - by drodecker
    Our websites are being crawled by content thieves on a regular basis. We obviously want to let through the nice bots and legitimate user activity, but block questionable activity. We have tried IP blocking at our firewall, but this becomes to manage the block lists. Also, we have used IIS-handlers, however that complicates our web applications. Is anyone familiar with network appliances, firewalls or application services (say for IIS) that can reduce or eliminate the content scrapers?

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  • 500 MB Avi video from CD lagging/glitching when reproduced

    - by Caki Esther
    I created an extra cd with Nero Burning that contains both audio tracks (I can hear them correctly) and a .avi presentation (pretty big one, 540 MB on a 700 MB cd). The audio is fine but the problem is that when the video is played from the cd (with whatever media player: Windows Media Player, VLC, etc..) it lags/glitches/stutters. I'd like the video to be smooth, how should I burn the video to reduce this effect? I mean: what kind of compression/format and why?

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  • domino script to do housekeeping of email

    - by PA
    I need to provide my users with an action to clean their mailboxes. Specifically they want to be able to reduce the size of the email without compromising their contents. I have come out with some three actions to do: (1) remove pictures, (2) remove signatures and (3) remove chained emails. In addition to the already existent actions to remove the attachments. Do you know where can I find such script or tool?

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