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• Full Text Search Strategy For My Website

  - by Hosea146

  I have a website that allows users to search for items in various categories. Each category is a separate area (page) of my website. For example, some categories might be cars, bikes, books etc. At the moment a user has to search for an item by going to the page (for example, cars) and searching for the car they want. I would like to allow the user to search for anything on my site, from my main home page. At the moment, each page (category) has its own set of tables, and I don't really want to turn Full Text Search on for each table (20+ of them) and search each table individually when a search is done. This is going to be slow and tedious. What I'm thinking of doing is creating a single table that will hold all searchable information for each category of item (when an item is saved in its respective table, I would copy all searchable information over to my 'Search' table). I would then turn Full Text Search on for that table, and search that table. Does this sound reasonable? Is there a better way? I've never used Full Text Search before, so this is new to me.

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• Thunderbird very slow with Gmail

  - by koskoz

  I'm using the latest version of Thunderbird with 3 Gmail accounts. Every time I launch it it seems it's downloading all my messages again. I've compacted folders (is the action working for the 3 accounts or do I need to do it for each of them?) and deleted the .msc files but nothing change. It leads to a software using a lot of bandwidth and being very slow when using it. It's a pain to write a message or even to view one. All the software is so slow I've never seen that it's almost unusable. I'm using thses addons : Dictionary Google Calendar Lightning My Gmail accounts are configured to imap.

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• "Raid 0 SAS" versus "2nd generation SSD"

  - by Stefano

  Hi everybody, i was planning to buy a SAS system made of two 15k RPM disks in Raid 0 configuration to give a boost to my s.o. and my apps... but after i saw that article on Coding Horror, i've started to thinking if a new 2nd generation SSD could do the same job, or even better... Does anybody have any information to help me decide?

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• Should I completely turn off swap for linux webserver?

  - by Poma

  Recently my friend told me that it is a good idea to turn off swap on linux webservers with enough memory. My server has 12 GB and currently uses 4GB (not counting cache and buffers) under peak load. His argument was that in a normal situation server will never use all of its RAM so the only way it can encounter OutOfMemory situation is due to some bug/ddos/etc. So in case swap is turned off system will run out of memory that will eventually crash the program hogging memory (most likely the web server process) and probably some other processes. In case swap is turned on it will eat both RAM and swap and eventually will result in the same crash, but before that it will offload crucial processes like sshd to swap and start to do a lot of swap operations resulting in major slowdown. This way when under ddos system may go into a completely unusable condition due to huge lags and I probably will not be unable to log in and kill webserver process or deny all incoming traffic (all but ssh). Is this right? Am I missing something (like the fact that swap partition is very useful in some way even if I have enough RAM)? Should I turn it off?

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• How to speed up Ubuntu on a netbook

  - by c1

  How do I speed up the latest version of Ubuntu on a VIA C7-M 1.6 GHz based netbook (HP 2133)? For example, full screen videos are very slow in the default configuration.

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• SQL Server 2005 running at 97% CPU usage

  - by Shiraz Bhaiji

  How can I findout which statements are using the CPU?

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• Low 'Burst Rate' from SATA drive in HDTune?

  - by UpTheCreek

  I recently upgraded my laptop's v slow hard drive to a seagate momentus 7200. Everything is working fine, but I'm a bit confused by these benchmark results: The burst rate is significantly less than the Maximim transfer rate, and not much higher than the normal minimum (if you ignore the spikes). What's going on here? On the HDtune website it defines Burst Rate as: ...the highest speed (in megabytes per second) at which data can be transferred from the drive interface (IDE or SCSI for example) to the operating system. Which begs some questions... e.g. if this is the highest, then how did the bechmarking tool record the 103MB/sec maximum? And if this really is the true maximum, then where is the bottleneck? The laptops SATA interface is on an Intel 82801GBM southbridge controller. When I check in hardware manager, I see that it's driver is iaStor.sys from 2005. Maybe that's the issue? I'll look for a newever version, but any insights would be appreciated. Thanks UPDATE: Acorting to this page on the HDTune website... An important parameter of the test is the Burst Rate. This value should always be higher than the maximum transfer rate. A lower value is usually an indication of a configuration problem. So what might be the configuration problem?

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• Any real benefit from eBoostr?

  - by skevar7

  Is there any real data on this question?

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• Best way to say "sync all system clocks to this server, when and ONLY when I say so?" Mixed setup of Windows+Linux servers.

  - by twblamer

  Title pretty much explains it. Let's say there's 100 servers, various versions of Windows and Linux, and one Windows server is the "master clock." I did look at this question: How do I synchronize clocks between Linux and Windows? This hints that ntp can do what I want if I run "ntpd -q" on a client (?). If I install ntp I also need to guarantee that it will only sync the times when I force it to. Even better if I have a log that tells me every time a sync was performed. I'm doing benchmark runs and I need to be able to say something like this: "Clocks were synced on all the benchmark systems at 09:42:01am on the master. A benchmark run was then initiated and allowed to run for six hours. None of the system clocks were altered during this time interval." I understand there is subsequent clock drift, but for now that's the way we're doing things and I'm doing it with a manual process. I'd rather at least automate the one-time sync.

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• Introducing Oracle Enterprise Manager 12c Release 4

  - by Roxana Babiciu

  Oracle continues to demonstrate its leadership in delivering innovations for IT Operations Management by introducing accelerated Zero-to-Cloud for Oracle-based private clouds with this latest release. Join a live webcast June 25th 9:00 AM PDT ! 12:00 PM EST by the Oracle Enterprise Manager team to learn more about capabilities that partners and customers can use to rapidly adopt private cloud across an enterprise. Register today!

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• Oracle Snapshot Not Working [closed]

  - by nayef harb

  i have created a snapshot that takes data from 2 tables and has a refresh rate of 1 day. The snapshot data is not refreshing it is still the same. is there something that i am missing ? Here is the code: CREATE SNAPSHOT test REFRESH COMPLETE START WITH SYSDATE NEXT sysdate + 1 AS select item_code,item_conc_code,tran_bran_code,sum(tran_qty) bal_qty from tranhist a, itemmast b where a.tran_item_code = b.item_code group by item_code,item_conc_code,tran_bran_code

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• Setting thresholds via smartd.conf

  - by JPerkSter

  Hello! We currently use smartd to monitor SMART health on our disks. I would like to set the 'thresholds' that smartd uses to report. For example: 197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 9 198 Offline_Uncorrectable 0x0010 100 100 000 Old_age Offline - 9 I would like to be able to set a threshold for these two attributes to only report if they are above 10. I haven't been able to find a way to set this via smartd.conf, and I'm also not looking to actually shutdown the daemon. Has anyone ever tried this, or know how I might be able to accomplish this better then throwing a script into cron.hourly?

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• Designing Databases for Rapid Resilience

  As the volume of data increases, DBAs need to plan more actively for rapid restores in the event of failure. For this, the intelligent use of filegroups is important, particularly when the Enterprise Edition of SQL Server offers the hope of online restores. How, though, should you arrange your data on the different filegroups? What happenens if the primary filegroup gets corrupted? Why backup and restore indexes?

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• Do control groups improve system performances?

  - by qdii

  According to this website, enabling cgroups in the kernel can boost performances by sharing resources in a better way. In particular, the conclusion states that:  Nevertheless, with a little trial and error, cgroups can help you improve the efficiency of your systems’ resource usage and avoid downtime due to overusage of a single service. Kernel seeds, however, recommend to deactivate them altogether. They say: Consider these [kernel] settings poison. They remain nothing but system slow-downs. They are all off by default [in the proposed kernel config file]. Who should I trust?

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• IIS6 - Classic ASP - "out of memory"/"out of string space"

  - by glaucon

  We have a classic ASP application that's under significantly more load than usual. We are from time to time been getting "out of memory" and "out of string space" in the httperr. We do not usually see these errors. For the moment we cannot change the application. Is there anything we can do to the IIS config which will help to reduce or stop these errors occurring ? The application pool is set to default values currently.

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• Tracing slow Java I/O in Solaris 10

  - by antispam

  We have a Java application which is significantly slower in Solaris 10 server than in Windows PC. We have profiled (-Xprof) the application and observed that UnixFileSystem.getBooleanAttributes0 method consumes about 40% CPU time with native calls. How can we follow our search to identify which is the cause of the slow behaviour? Thank you very much.

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• How to remove the pause during JBoss 5.1.0 GA boot between ProfileServiceBootstrap and AnnotationCreator?

  - by rrc7cz

  I've managed to strip down my JBoss profile enough that it boots in 1.5 minutes. I started with the web profile and started pulling out stuff I didn't need. The bulk of my boot time can be seen here: ... 15:21:51,890 INFO [ProfileServiceBootstrap] Loading profile: ProfileKey@86d597[domain=default, server=default, name=np] 15:22:55,406 WARN [AnnotationCreator] No ClassLoader provided, using TCCL: org.jboss.managed.api.annotation.ManagementComponent 15:22:55,578 WARN [AnnotationCreator] No ClassLoader provided, using TCCL: org.jboss.managed.api.annotation.ManagementComponent ... Does anyone have any idea what JBoss is doing here for 1 minute? If so, is there any way to speed it up or skip it entirely? This is for developer instances, so boot time is quite important.

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• Exclude a process from being listed in `top`

  - by warren

  Is it possible to exclude some processes from being reported by top? For example, I would like to exclude itself from its listing (ie, I don't want top to show in the process list). I would also like to be able to exclude processes that do not belong to the user running top (except for root). Is this possible? If so, how? If not, is there a similar tool that will do what I want (that does not involve running something like ps frequently).

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• Possibility Program for number of pieces

  - by Brad

  I would like to put a program together to calculate the number of 60' pieces would be needed from a list of shorter pieces. For example, I sell rebar cut to length from our standard length of 60'-0". Now the length the customer requires are as follows: 343 pc @ 12.5' 35 pc @ 13' 10 pc @ 15' 63 pc @ 15.5'....... There are 56 total lengths ranging from 12.5' to 30.58' The idea is to limit the amount of waste from the 60' piece. The input from the user would be: number of differnt lengths Length of piece to cut from count of different lengths The result would be the number of prime pieces needed to fulfill the order. What well-known algorithms exist that could help me solve this problem?

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• Why might one hard disk perform slower than another?

  - by Styne666

  I have just bought two WD 3TB Reds (WD30EFRX) for a FreeNAS box and whilst doing burn-in testing it seems like one is consistently taking about 10% longer than the other. So far I've done: a dd read test of the whole device, a long SMART test and it's currently halfway through a badblocks -wvs. The second device is lagging behind the first on all of them. I'm running these commands on Debian stable in two Konsole tabs. Is there a reason this could be considered normal behaviour or is it worth running the tests independantly? They're both plugged in to the LSI 2308 (IT mode) on a Supermicro X10SL7-F.

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• How to monitor a Windows process' working set greater than 4GB?

  - by Shoeless

  Apparently the .NET framework has a bug that prevents working set values above 2GB from accurately being determined. Between 2 and 4GB one can apply some xor-ing calculation to obtain the value, but there's no means of obtaining working set values greater than 4GB (using .Net or WMI) What method can be used - preferably from a PowerShell script - to obtain an accurate measurement of a process' working set when the working set is greater than 4GB? (some side details can be found in this StackOverflow question)

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• Oracle Enterprise Manager 12c - New tools announced at OOW

  - by Cinzia Mascanzoni

  Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Calibri","sans-serif"; mso-bidi-font-family:"Times New Roman";} Oracle announced enhanced tools and programs for Oracle Enterprise Manager 12c, including a new Enterprise Manager Extensibility Exchange, updated Oracle PartnerNetwork Enterprise Manager Knowledge Zone, and additional Enterprise Manager Extensibility Kit resources, enabling management of all software and hardware assets from a “single pane of glass,” to help partners accelerate their transformation to the public and private cloud.

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• What makes Java so suitable for writing NoSQL Databases

  - by good_computer

  Looking at this page that aggregates the current NoSQL landscape, one can see that the majority of these projects are written in Java. Databases are complex systems software dealing with the file system, and so C/C++ would be a better choice than Java for this. (that's my thinking which might be flawed) Secondly, databases deal with transferring large amounts of data from disk to RAM -- which they call a working set. The JVM takes non-trivial amount of RAM for it's own purpose -- so it would be more efficient to use a platform that leaves lots of memory for data instead of hogging it for its own operations. The major relational databases are ALL written in C/C++ MySQL C, C++ Oracle Assembler, C, C++ SQL Server C++ PostgreSQL C SQLite C So what makes Java so popular in NoSQL world.

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• moving from WinXP to WinServer in VmWare

  - by Alex

  I have a Vmware machine for.Net application testing. Current setup: Host OS: win7 Guest OS: Right now the guest OS is Win Xp Pro x64, which runs great with just 1 gigabyte of RAM and 10 gigs of disk space. * This part can be skipped * As I said, there was a program that I needed to test, but unfortunately, by default, Vmware installs crappy display drivers(called SVGA II) on XP machines and there is NO way to upgrade them! This resulted in my program's error (the program used SlimDX (DirectX wrapper) to do some stuff..). Eventually I found out that display drivers most certainly is the problem. For example, Windows 7 virtual machine uses SVGA 3D drivers and I have NO problems running my SlimDX-based program. Now, regarding Windows Server 2008! Apparently, WDDM driver is supported by WS2008, which means that I'll be able to install SVGA 3D and to test my DX apps. * end of skip * The questions are: Will WS2008 be as smooth with just 1 gig of RAM just like Win XP was? Will 10 gigs of HDD be enough? Or the server requires more? Will I be able to install .Net ver. 4 on WS2008? Are there any limitations that I need to be aware of as a .Net programmer? EDIT: I was hoping that WS2008 is XP-based, not Vista-vased/W7-based. In comparison, W7 virtual machine with 2 gigs of RAM and 2 proc cores nearly kills my Host OS. Whereas, WinXp runs extremely fast even with 1 core and 1 gig of RAM. That's the main reason why I want to try WS2008..

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• Need reasonably priced router with QoS support [closed]

  - by ULTRA_POROV

  I dont need wireless. I am expecting very heavy traffic, with possibly thousands of tcp connections open at one time. This would require that the router has good hardware. I also need to limit the different services i will provide. Lets say i need to guarantee 60% of all the bandwidth to HTTP, 10% FTP, and 10% for Mail... So the router software must have flexible QoS options as well. I don't know which one to chooose, because this information is usually not given on the router specs.

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