"Not that much point having a tracing tool if an inexperienced admin cannot safely use it on a live system which has a problem. "
Right. Because everyone knows the best place to develop, debug, and profile code is on a production machine, and the person doing the development should be a system administrator, preferably with minimal experience.
I would say many people do know that the best place to understand the performance of a system in production is in production. If the vendors support techs can give an admin commands to run and know that a typo here or there will not result in a panic then that is a very useful feature.
Sun provide a device detection tool which will scan your hardware and should give you an idea of if drivers are available for the various bits of your system.
Check out the Dtrace Usenix paper "Dynamic Instrumentation of Production Systems".
This paragraph is copied from the Related Work section.
Kerninst is a dynamic instrumentation framework that is designed for use on commodity operating system kernels[13]. Kerninst achieves zero probe effect when disabled, and allows instrumentation of virtually any text in the kernel. However, Kerninst is highly aggressive in its instrumentation; users can erroneously induce a fatal error by accidentally instrumenting routines that are not actually safe to instrument.3 Kerninst allows for some coalesence of data, but data may not be aggregated based on arbitrary tuples. Kerninst has some predicate support, but it does not allow for arbitrary predicates and has no support for arbitrary actions.
Quite simple. There were probably were half man half apes, but over time we ate all their food, or all of them and they became extinct. You should of noticed that one of the things that Human beings are good at is the extinction of other species. Not forgetting the apes that can talk using sign language etc. that were in the news recently.
Slashdot Mirror
No confusion here. DTrace is useful for both profiling and tracing. More details here
Right. Because everyone knows the best place to develop, debug, and profile code is on a production machine, and the person doing the development should be a system administrator, preferably with minimal experience.
I would say many people do know that the best place to understand the performance of a system in production is in production. If the vendors support techs can give an admin commands to run and know that a typo here or there will not result in a panic then that is a very useful feature.
http://docs.sun.com/app/docs/doc/817-6223
A problem already solved with DTrace on Solaris http://docs.sun.com/app/docs/doc/817-6223
Sun provide a device detection tool which will scan your hardware and should give you an idea of if drivers are available for the various bits of your system.
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http://www.sun.com/bigadmin/hcl/hcts/device_detec
This paragraph is copied from the Related Work section.
Kerninst is a dynamic instrumentation framework that is designed for use on commodity operating system kernels[13]. Kerninst achieves zero probe effect when disabled, and allows instrumentation of virtually any text in the kernel. However, Kerninst is highly aggressive in its instrumentation; users can erroneously induce a fatal error by accidentally instrumenting routines that are not actually safe to instrument.3 Kerninst allows for some coalesence of data, but data may not be aggregated based on arbitrary tuples. Kerninst has some predicate support, but it does not allow for arbitrary predicates and has no support for arbitrary actions.
Dtrace Usenix Paper
More examples in answerbook from the BigAdmin Dtrace page
Sun Linux will just be Redhat with a few tweaks, Cobalt already uses SGIs XFS filesystem for example.
Why would any distribution vendor want to ignore all the GPL work done by another.
They will just pick and Choose the extra features they want to add / delete.
quite possibly right but the performance of the www.windows2000test.com server is not exactly a positive advertisment for it when it does ship.
Quite simple. There were probably were half man half apes, but over time we ate all their food, or all of them and they became extinct.
You should of noticed that one of the things that Human beings are good at is the extinction of other species.
Not forgetting the apes that can talk using sign language etc. that were in the news recently.
If genetically modified plants were sterile how would the seeds be produced to be sold to the farmer?
"leakage" is inevitable only the consequences are unknown.
The gene sequence is the binary form.
and patents provide the licence required for Monsanto's soya etc.
The danger is that Genetic engineering gives the equivelent of root access to evolution.
Personally I would prefer it if non of the users, Monsanto ICI etc were allowed to crash the system.