if you want to document your xml config file format, you can give a schema (xsd) or dtd for your document. you can give all the information about al l the supported options for the config file in your schema definition.
xml is more robust than its property file counterpart.
that's because gentoo can't figure a good way to determine the dependancies between services so they throw their hands up and just say "parallel starting of services is bad".
i also like the way their portage system by default will upgrade an installed library and uninstall the previous version which has many binaries statically linked to it. the "solution" that keeps getting thrown around is to run some revdep-rebuild (which never seems to work for me). revdep-rebuild is suppose to find and rebuild the apps that portage broke.
did you RTFA? launchd seems to be a system wide super program launcher. startup, timed, event driven (plug in a usb memory stick and get a pop up window asking what you want to do).
from reading the article, launchd sounds like a viable technology to replace quite a few convoluted system on my linux machines.
If anyone has any tricks to speed up the JVM so it doesn't drag ass I'd appreciate it being posted.
get a modern machine with plenty of ram. seriously, you're developing java applications. you want a machine with a gig of ram, and a modern processor. use your old p2 machine w/ 256M ram for surfing the internet and maybe a little word processing.
intellij may have a nice IDE (i've honestly never tried it due to having to register just to try it out), but when there's free/open alternatives, guess which one the developer will choose to learn. intellij offers no transferable skills in the marketplace. if someone knows how to use eclipse/netbeans to build software applications, they're able to easily fit into nearly any development team.
jbuilder was the defacto standard up to about jbuilder 6. after that sun/ibm have released some really useable open source alternatives.
what kind of rpm is openoffice.org dependant upon? (besides the fact that you need lots of cruft to get koffice installed (qt, kdebase, kdelibs, etc,etc). i run have openoffice.org installed on my machines and no RPM software installed that i can see.
WebSphere and WSAD had troubles with a kernel version? Aren't these products strictly java products? I would be very very curious what those IBM guys are doing behind the scenes that a kernel upgrade is going to break software running under a jvm.
if IBM would release the sources for their jvm we might see that they're doing some _interesting_ things in kernel land. i've heard that taxing the jvm on at least an aix system can bring the kernel down.
no hardware vendor can successfully sell linux laptops when the os doesn't even properly support them.
i'd love to see a linux distribution with proper notebook "hibernation". you close the lid, it should go to sleep. stop using my battery. i open the lid and turn it on, it should come back where it was. the swsusp2 kernel patch gets very very close. but it's a pain to patch in, and is very picky about kernel version, etc. if there's a distro that includes that by default (and provides updates), i would love to hear it.
those computers from EmperorLinux are 2k. that's twice what i paid for a laptop with comparable hardware. no thanks!
oh yeah, and what ibm is trying to support is the big iron in the server rooms. they make a pretty penny selling the hardware to go along with their db2, websphere, notes, and other idiodic software licenses. for some reason people who run the server rooms like the big reciepts they pay out for the software licenses to get that warm and fuzzy inside for having the DB2 or oracle name behind their data. nothing but silence from them though when the database crashes because of some crazy wacked out disk raid drive that didn't work and kept the business down for 1/2 a day, and there's no clustering database because that's just way too much $$, isn't one db good enough?..
ibm is investing in an operating system for the server rooms, while consumers are migrating to more portable hardware. move along.
Or the server goes down at the wrong moment and as a result all messages are delivered twice? Or a message gets stuck in a loop and gets sent over and over again, thousands of times until it fills the spool?
sounds like my experience with MDB's, or at least with the big old app server that comes from a 3 letter company (the company doesn't start w/ a vowel).
we were processing a measly 10,000 messages per hour, or at least that was the requirement. the system would choke at about 5000 per hour, and the queues would get backed up, the system would grind to a halt. after suspending the test, we waited for the messages to get through the queue. we constantly had messages that were unaccounted for. some messages were processed twice, others got forgotten all together.
the "solution" was to reconfigure the server so that the messages would get through ok. tune the jvm heap, tune the threads, etc. at that point i wondered what happens when the system begins to process 20,000 / hr. and the system is already in production.
yes you have to learn new libraries and api's when you switch languages. it's all part of the job.
i recall many moons ago, working with c programs on a VMS system that called into fortran functions. and fortran into c functions. there were hoops and restrictions both ways. do i pass by reference or pass by value?
i define inheritance to be where one object inherits properties and functionality from it's parent object . i get my blue eyes and analitical nature from my mom. i could over ride those if i want and perhaps change to hazel eyes if i want. there's other things i inherited from my father, so i would think that inheritance from potentially more than one parent class. for people, we learn the implementations over time, but i would say that implementation is also inherited (but able to be overridden).
My main problem with Java isn't the language -- it's the libraries. Lots of them, packaged in their own special way, not really designed for use by any language.
i don't really follow the point here. yes there's lots of java libraries available today. the java community (or those who prefer to develop robust applications over buggy, unmaintainable code) likes to think of these as tested bits of code. and tested code is golden when it comes to the number of lines of code you need to write. less lines for you means less bugs.
yes, there's a TON of java libraries, and to learn the API's take time, but that's no different than any other language. my linux system has a TON of libraries. lots of them. packaged in their own special way. not designed for use by any other languages. it's the other languages that have had to find a way to utilize these legacy libraries.
and to answer your question, to me, object oriented means that the language provides inheritance, encapsulation, and polymorphism.
can you please point out an example of such machine? i've never heard of such a monster, not that it doesn't exist. outside of ati and nvidia providing binary drivers for their video chips i haven't seen much binary only drivers for linux.
even ndiswrapper uses windows binary drivers which are easily available and usable.
you're better off using a pcmcia card slot i'd imagine than spending 100$ on wireless.
this notebook only includes one pcmcia slot, and no mention of usb on it. maybe they just don't have their specs page upto par, since the wireless specs don't list wireless networking ??
an advertising company? they had 1.5billion in revenue last year. i couldn't find a breakdown, but i would be very surprised if the majority of that came from advertising revenue. they develop and sell very very good technologies.
i've used mondo/mindi for backups from a gentoo system. a few minor quirks.
first, the mondo developer doesn't play very nice with the community, and there isn't a lot of community involvement on the mondo forums (who wants to spend time on a archive software forum).
second, mondo backups are incompatible between versions. some time back i was using mondo 1.6.x or some such. i got rid of that machine, and a month later wanted to restore some data from the backups. the new machine had mondo 2.x installed. it completely bailed on restoring from the older archive. since i was on gentoo i could easily install the version of mondo i needed to restore from. just a slight issue, especially if you're using gentoo with automated updates.
thirdly, mondo handles files in a "propriatary" manner. there's gobs and gobs of different archive files on the disk and finding which one has the file you want (outside of the mondorestore interface) is challenging. i don't understand why one big ass tgz file wouldn't be sufficient, but i'm sure there's reasons.
after quite some time w/o a backup, i'm off to re setup my mondo backups. mondo doesn't work nicely with cron either. takes a little work to grab and at script and then cron that.
i can say that having mondo backups and restoring from them has been handy, handy.
modem, laptop? that's so 1999's. even road wariorers have figured out that using their cell phone gives better laptopping (you don't need a local jack/line).
my laptop has a modem. i wish it had IEEE 1394 instead, but i just got a card to make up that deficancy. it has also an internal 10/100 chip that i don't use. some might find that usefull, but again, a card would solve that problem.
note also, i think the wal-mart site claims 1.5 hrs battery life. they're probably being honest. those who claim 3-4 hrs life are full of manure.
you realize they play in an ice rink... indoors, right? hockey is fun and all to watch, and it seems more like a sport than the NFL football. play for 10-20 secods every minute? stop the play, get the team together and figure out the next move? and they call these guys athletes? put them on the field for 30 strait minutes and let them move the ball up and down the field as in rugby/soccer. the NFL players are padded all to hell, and what's this "protect the quarterback" crap? ok pansies, get out there any play ball. these are the elite multi million dollar players? i say take a shot at um if they want to play, let's see them play.
are in house printers cost effective at all? wallyworld, cvs, and everyone else sells digital prints at under.30$ for a 3x5 print (or is it 4x6?). at anyrate, my take is to let them have the high quality printer/paper/ink etc. and i can just print what i want. i'm hoping also that prices will slightly drop when more and more people switch from film to digital photos.
PLEASE GET RID OF THE FREAKING IPOD SIGNATURES AROUND HERE. FREAKING ANNOYING AS HELL. SLASHDOT IS THE LAST PLACE I WOULD EXPECT TO FIND PYRMID SCHEMES.
on to the message. there's plenty of advantages to hiberante functionality in both linux and xp. one, it restores current memory. if i'm writing a paper, coding some app, whatever, i can hibernate and return to the exact same desktop, nothing lost. i don't even need to worry about non-committed files. next, batter life is critical. these machines get less than two hours on a charge. i'm sure some folks claim 4 or so hours, but that's not hours of usage. i'd like to see a laptop play 4 hours of dvd's on a single charge. as far as restore from hibernate, i can only mostly speak to my linux restore. the bios/grub startup seems to take the longest time. linux takes maybe 15 seconds to restore from hibernate.
i'm in ohio, and this past spring i could have applied for a 50% grant that would have covered 20% of the cost. that was still too much for me especially with the big hassles of the grant paperwork.
it's going to take a LOT of electricity to heat a house here in ohio. i would guess more pannels would be needed.
i've also looked into geothermal heating/cooling solutions. the cost is much much less than solar energy. the problem is location, location, location. if you're in the middle of nowhere with good land (not rocky) you'll be fine. maybe under 10k. for me, it's a vertical loop only, and they were talking 18-22k. then i found my land is rocky underneath and that doesn't conduct heat well. no dice there.
the best energy alternative i've invested in was getting a wood stove. i don't think it qualifies as "green" energey, but wood is cheep here. i don't pay for it, just go and pick it up from those who don't want it. the thing burns HOT in the winter and gas bills are very very low (need enough to keep the pipes from freezing while we're away). i don't think we've achieved payback yet, but it's exercise, and good ambiance, and the thing burns HOT.
i'll gladly have some green energy when it's cost effective.
i'm not quite sure what CxO's would sign up for a project that's showing a 20 year ROI.
you say this person "made" their equipment. i don't quite know what someone can make their equipment for, but i've looked seriously into having solar installed on my house. it's currently 40,000$ to have solar panels installed. our house averages about 1800$ per year in electricity costs.
the payback on that is, well quite a long time. i probably won't own the house after that long of a time. so i have to consider, will someone purchasing my house be willing to pay extra because there'll be low/no electricity costs? basically would they invest in their energy savings? how much? personally, it's too much and too far off to be seriously considered right now.
now, if it were 10k, it would be feasable. i could have it paid in 5 years. that's a project i'd take on.
i wouldn't say the analogy breaks down so much. lowering prices to OEM's but gouging the general public who supported the product and got its name recognition to where it is today? only to be sidestepped for a community driven^H^H^H^H^H^H^H^H^H^H^H^H^H^H^H^Hcorporate dictated non-supported desktop distribution?
sure the OEM will be able to generate volume sales. and what percentage of people really use their corporate support? heck, we have a very decent support contract with BEA weblogic, and i've had a ticket open for over a month takes teeth pulling just to get them to pay any lip service to. the only OS support i've seen worth a damn was the VMS support from the DEC engineers. if a VMS machine crashed (rarely) DEC was onsite quickly to diagnose the problem.
red hat has been the M$ of linux distros for quite some time. are they charging per cpu yet? even charging per box gives an incentive to run on big iron as oppose to running on commodody hardware.
1. there's no kernel binary packages that i'm aware of, just OO.org and a few minor others perhaps.
2. getting all binaries available ona public server like debian is a tug of war game. i advocate it regulary on the gentoo forums and on the irc channel. that's when the "old timers" first say "why are you using gentoo if you don't want to compile your stuff", then finally say, if you want a binary server, set one up. they'll have no part of it and they'll resist it all the way.
there's something to be said for binary packages, namely stability. a binary packages has many more people testing it than the one package that i compiled on my machine with my uber special USE flags.
so, i for one would welcome our new public binary package server overlords.
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if you want to document your xml config file format, you can give a schema (xsd) or dtd for your document. you can give all the information about al l the supported options for the config file in your schema definition.
xml is more robust than its property file counterpart.
that's because gentoo can't figure a good way to determine the dependancies between services so they throw their hands up and just say "parallel starting of services is bad".
i also like the way their portage system by default will upgrade an installed library and uninstall the previous version which has many binaries statically linked to it. the "solution" that keeps getting thrown around is to run some revdep-rebuild (which never seems to work for me). revdep-rebuild is suppose to find and rebuild the apps that portage broke.
did you RTFA? launchd seems to be a system wide super program launcher. startup, timed, event driven (plug in a usb memory stick and get a pop up window asking what you want to do).
from reading the article, launchd sounds like a viable technology to replace quite a few convoluted system on my linux machines.
If anyone has any tricks to speed up the JVM so it doesn't drag ass I'd appreciate it being posted.
get a modern machine with plenty of ram. seriously, you're developing java applications. you want a machine with a gig of ram, and a modern processor. use your old p2 machine w/ 256M ram for surfing the internet and maybe a little word processing.
a mac user perhaps?
intellij may have a nice IDE (i've honestly never tried it due to having to register just to try it out), but when there's free/open alternatives, guess which one the developer will choose to learn. intellij offers no transferable skills in the marketplace. if someone knows how to use eclipse/netbeans to build software applications, they're able to easily fit into nearly any development team.
jbuilder was the defacto standard up to about jbuilder 6. after that sun/ibm have released some really useable open source alternatives.
two words:
mouse button_s_
what kind of rpm is openoffice.org dependant upon? (besides the fact that you need lots of cruft to get koffice installed (qt, kdebase, kdelibs, etc,etc). i run have openoffice.org installed on my machines and no RPM software installed that i can see.
WebSphere and WSAD had troubles with a kernel version? Aren't these products strictly java products? I would be very very curious what those IBM guys are doing behind the scenes that a kernel upgrade is going to break software running under a jvm.
if IBM would release the sources for their jvm we might see that they're doing some _interesting_ things in kernel land. i've heard that taxing the jvm on at least an aix system can bring the kernel down.
no hardware vendor can successfully sell linux laptops when the os doesn't even properly support them.
i'd love to see a linux distribution with proper notebook "hibernation". you close the lid, it should go to sleep. stop using my battery. i open the lid and turn it on, it should come back where it was. the swsusp2 kernel patch gets very very close. but it's a pain to patch in, and is very picky about kernel version, etc. if there's a distro that includes that by default (and provides updates), i would love to hear it.
those computers from EmperorLinux are 2k. that's twice what i paid for a laptop with comparable hardware. no thanks!
oh yeah, and what ibm is trying to support is the big iron in the server rooms. they make a pretty penny selling the hardware to go along with their db2, websphere, notes, and other idiodic software licenses. for some reason people who run the server rooms like the big reciepts they pay out for the software licenses to get that warm and fuzzy inside for having the DB2 or oracle name behind their data. nothing but silence from them though when the database crashes because of some crazy wacked out disk raid drive that didn't work and kept the business down for 1/2 a day, and there's no clustering database because that's just way too much $$, isn't one db good enough?..
ibm is investing in an operating system for the server rooms, while consumers are migrating to more portable hardware. move along.
Or the server goes down at the wrong moment and as a result all messages are delivered twice? Or a message gets stuck in a loop and gets sent over and over again, thousands of times until it fills the spool?
sounds like my experience with MDB's, or at least with the big old app server that comes from a 3 letter company (the company doesn't start w/ a vowel).
we were processing a measly 10,000 messages per hour, or at least that was the requirement. the system would choke at about 5000 per hour, and the queues would get backed up, the system would grind to a halt. after suspending the test, we waited for the messages to get through the queue. we constantly had messages that were unaccounted for. some messages were processed twice, others got forgotten all together.
the "solution" was to reconfigure the server so that the messages would get through ok. tune the jvm heap, tune the threads, etc. at that point i wondered what happens when the system begins to process 20,000 / hr. and the system is already in production.
yes you have to learn new libraries and api's when you switch languages. it's all part of the job.
i recall many moons ago, working with c programs on a VMS system that called into fortran functions. and fortran into c functions. there were hoops and restrictions both ways. do i pass by reference or pass by value?
i define inheritance to be where one object inherits properties and functionality from it's parent object . i get my blue eyes and analitical nature from my mom. i could over ride those if i want and perhaps change to hazel eyes if i want. there's other things i inherited from my father, so i would think that inheritance from potentially more than one parent class. for people, we learn the implementations over time, but i would say that implementation is also inherited (but able to be overridden).
My main problem with Java isn't the language -- it's the libraries. Lots of them, packaged in their own special way, not really designed for use by any language.
i don't really follow the point here. yes there's lots of java libraries available today. the java community (or those who prefer to develop robust applications over buggy, unmaintainable code) likes to think of these as tested bits of code. and tested code is golden when it comes to the number of lines of code you need to write. less lines for you means less bugs.
yes, there's a TON of java libraries, and to learn the API's take time, but that's no different than any other language. my linux system has a TON of libraries. lots of them. packaged in their own special way. not designed for use by any other languages. it's the other languages that have had to find a way to utilize these legacy libraries.
and to answer your question, to me, object oriented means that the language provides inheritance, encapsulation, and polymorphism.
can you please point out an example of such machine? i've never heard of such a monster, not that it doesn't exist. outside of ati and nvidia providing binary drivers for their video chips i haven't seen much binary only drivers for linux.
even ndiswrapper uses windows binary drivers which are easily available and usable.
you're better off using a pcmcia card slot i'd imagine than spending 100$ on wireless.
this notebook only includes one pcmcia slot, and no mention of usb on it. maybe they just don't have their specs page upto par, since the wireless specs don't list wireless networking ??
i would want to see more photos before ordering.
an advertising company? they had 1.5billion in revenue last year. i couldn't find a breakdown, but i would be very surprised if the majority of that came from advertising revenue. they develop and sell very very good technologies.
i've used mondo/mindi for backups from a gentoo system. a few minor quirks.
first, the mondo developer doesn't play very nice with the community, and there isn't a lot of community involvement on the mondo forums (who wants to spend time on a archive software forum).
second, mondo backups are incompatible between versions. some time back i was using mondo 1.6.x or some such. i got rid of that machine, and a month later wanted to restore some data from the backups. the new machine had mondo 2.x installed. it completely bailed on restoring from the older archive. since i was on gentoo i could easily install the version of mondo i needed to restore from. just a slight issue, especially if you're using gentoo with automated updates.
thirdly, mondo handles files in a "propriatary" manner. there's gobs and gobs of different archive files on the disk and finding which one has the file you want (outside of the mondorestore interface) is challenging. i don't understand why one big ass tgz file wouldn't be sufficient, but i'm sure there's reasons.
after quite some time w/o a backup, i'm off to re setup my mondo backups. mondo doesn't work nicely with cron either. takes a little work to grab and at script and then cron that.
i can say that having mondo backups and restoring from them has been handy, handy.
modem, laptop? that's so 1999's. even road wariorers have figured out that using their cell phone gives better laptopping (you don't need a local jack/line).
my laptop has a modem. i wish it had IEEE 1394 instead, but i just got a card to make up that deficancy. it has also an internal 10/100 chip that i don't use. some might find that usefull, but again, a card would solve that problem.
note also, i think the wal-mart site claims 1.5 hrs battery life. they're probably being honest. those who claim 3-4 hrs life are full of manure.
you realize they play in an ice rink... indoors, right? hockey is fun and all to watch, and it seems more like a sport than the NFL football. play for 10-20 secods every minute? stop the play, get the team together and figure out the next move? and they call these guys athletes? put them on the field for 30 strait minutes and let them move the ball up and down the field as in rugby/soccer. the NFL players are padded all to hell, and what's this "protect the quarterback" crap? ok pansies, get out there any play ball. these are the elite multi million dollar players? i say take a shot at um if they want to play, let's see them play.
are in house printers cost effective at all? wallyworld, cvs, and everyone else sells digital prints at under .30$ for a 3x5 print (or is it 4x6?). at anyrate, my take is to let them have the high quality printer/paper/ink etc. and i can just print what i want. i'm hoping also that prices will slightly drop when more and more people switch from film to digital photos.
PLEASE GET RID OF THE FREAKING IPOD SIGNATURES AROUND HERE. FREAKING ANNOYING AS HELL. SLASHDOT IS THE LAST PLACE I WOULD EXPECT TO FIND PYRMID SCHEMES.
on to the message. there's plenty of advantages to hiberante functionality in both linux and xp. one, it restores current memory. if i'm writing a paper, coding some app, whatever, i can hibernate and return to the exact same desktop, nothing lost. i don't even need to worry about non-committed files. next, batter life is critical. these machines get less than two hours on a charge. i'm sure some folks claim 4 or so hours, but that's not hours of usage. i'd like to see a laptop play 4 hours of dvd's on a single charge. as far as restore from hibernate, i can only mostly speak to my linux restore. the bios/grub startup seems to take the longest time. linux takes maybe 15 seconds to restore from hibernate.
i'm in ohio, and this past spring i could have applied for a 50% grant that would have covered 20% of the cost. that was still too much for me especially with the big hassles of the grant paperwork.
it's going to take a LOT of electricity to heat a house here in ohio. i would guess more pannels would be needed.
i've also looked into geothermal heating/cooling solutions. the cost is much much less than solar energy. the problem is location, location, location. if you're in the middle of nowhere with good land (not rocky) you'll be fine. maybe under 10k. for me, it's a vertical loop only, and they were talking 18-22k. then i found my land is rocky underneath and that doesn't conduct heat well. no dice there.
the best energy alternative i've invested in was getting a wood stove. i don't think it qualifies as "green" energey, but wood is cheep here. i don't pay for it, just go and pick it up from those who don't want it. the thing burns HOT in the winter and gas bills are very very low (need enough to keep the pipes from freezing while we're away). i don't think we've achieved payback yet, but it's exercise, and good ambiance, and the thing burns HOT.
i'll gladly have some green energy when it's cost effective.
i'm not quite sure what CxO's would sign up for a project that's showing a 20 year ROI.
you say this person "made" their equipment. i don't quite know what someone can make their equipment for, but i've looked seriously into having solar installed on my house. it's currently 40,000$ to have solar panels installed. our house averages about 1800$ per year in electricity costs.
the payback on that is, well quite a long time. i probably won't own the house after that long of a time. so i have to consider, will someone purchasing my house be willing to pay extra because there'll be low/no electricity costs? basically would they invest in their energy savings? how much? personally, it's too much and too far off to be seriously considered right now.
now, if it were 10k, it would be feasable. i could have it paid in 5 years. that's a project i'd take on.
i wouldn't say the analogy breaks down so much. lowering prices to OEM's but gouging the general public who supported the product and got its name recognition to where it is today? only to be sidestepped for a community driven^H^H^H^H^H^H^H^H^H^H^H^H^H^H^H^Hcorporate dictated non-supported desktop distribution?
sure the OEM will be able to generate volume sales. and what percentage of people really use their corporate support? heck, we have a very decent support contract with BEA weblogic, and i've had a ticket open for over a month takes teeth pulling just to get them to pay any lip service to. the only OS support i've seen worth a damn was the VMS support from the DEC engineers. if a VMS machine crashed (rarely) DEC was onsite quickly to diagnose the problem.
red hat has been the M$ of linux distros for quite some time. are they charging per cpu yet? even charging per box gives an incentive to run on big iron as oppose to running on commodody hardware.
1. there's no kernel binary packages that i'm aware of, just OO.org and a few minor others perhaps.
2. getting all binaries available ona public server like debian is a tug of war game. i advocate it regulary on the gentoo forums and on the irc channel. that's when the "old timers" first say "why are you using gentoo if you don't want to compile your stuff", then finally say, if you want a binary server, set one up. they'll have no part of it and they'll resist it all the way.
there's something to be said for binary packages, namely stability. a binary packages has many more people testing it than the one package that i compiled on my machine with my uber special USE flags.
so, i for one would welcome our new public binary package server overlords.