How do I know if I would benefit from an SSD?
I use my MacBook Pro (Mid 2010) for development. It hits the CPU hard, but there are also a lot of reads and writes of small files, and sometimes the computer is very sluggish even when Activity Monitor shows the CPU is not maxed out.
What's the maximum data throughput, in MB/sec, I should see in the Disk Activity section of Activity Monitor? It's peaking at a little above 3MB/sec, which seems very low. Would an SSD give me a noticeable speed boost?
Have you installed 8GB of RAM? If not, you might do that first.
Regarding the benefits of SSDs, go to the OWC website and look at the bench tests that they have performed with SSDs vs conventional HHDs. They have quantified their results and that should give you a better indication of what to expect than some one saying that 'its way faster'.
Ciao.
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RE : Who would benefit from Forte?
RE : Jerry Fatcheric's message about "Who would benefit from Forte?"
With regards the point mentioned in the attached message from Jerry
Fatcheric below, I would like to illustrate my point. I implemented in both
Visual Basic and Delphi, the example that is mentioned in the attached
message, about a browser application, having the capability to browse
thousands of records with the inital screenful needing to come ASAP. It took
me less than 2 minutes to implement this in VB (I timed it). Just threw a
"remote data" control and a "DBGrid" control on a form, set a few properties
and wrote a "select *" sql specifying that only 30 records be returned at a
time. For a table with 4K records, the first 30 came in and got displayed in
less than 2 seconds. In Delphi, the response was even better and whole 4K of
record could be retrieved in less than 4 second. (Yes less than 4 seconds
for retrieving 4000 records from a DB2/NT database running on a remote
machine). Even I could not believe the performance of Delphi which I haven't
used that much. These tools are THE fastest way to get the data from a
database server to a windows client. These will perform any day better than
FORTE. One of the problem that I came across FORTE in one of situations like
this was data movement across nodes is very costly. In one of our
applications, since we stored the data as objects, in a similar situation as
you have mentioned, the performance of moving a lot of data form the server
to the client was not very good and in consulation with FORTE technical
support we had to convert the data in objects to scalar (delimited string),
move across node, and convert the data back to object at a client.
Performance increase - 40 secs. vs 120 secs. earlier.
About my background. I have worked about 8 years in application development
and for the past 4 years have been working in a client server environment.
Being a consultant, I have used many tools, including FORTE for one year, to
provide my clients with the most bang for their buck, which to me is the
topmost priority as a Consultant. I do not decide for my clients what
technology they should use but sure evaluate the various options they have
and recommend more than one solutions, listing the advantages and
disadvantages.
Currently working on coming up with a solution for a client with a customer
service application need with around 50 users now, scaling up to 100 users
in the future. The best solution that I could come up with was a logical
3-tier with the presentation and the business layer running on NT
workstation (client) and the database on NT server (server). With all the
processing on a powerful and healthy (not "fat") client the system, I feel
can scale very well. For a 500 user system, you literally have 500
application server (physically on the client machine) being served by one
data server. To the data server, having a physical middle tier between the
client and the data server, I feel would not help, at least in our
situation. Almost everything that the middle tier could do to reduce the
load on the data server can be handled by the "business layer" running on
the client machine. It does mean that each user connects to the database
directly so in a case of 500 user, there are 500 connections to the database
but lately with the sophisticated DBMS, this is no longer an issue. The DBMS
can manage this many user very economically (read the benchmark about SQL
server with 5000, yes 5k user at "www.microsoft.com/sql") and almost as well
as a middle tier. It is fault tolerant - nothing can bring down the system
except a client failure, the data server failure or a network failure, the
same failure points as a N-Tier solution unless you are replicating or
duplicating the database. In our solution our application is as scaleable as
the database is, and the databases available today are very scaleable if you
look at the current database technology offerings.
As you may have guessed the abovementioned solution is cheaper with a very
fast "time to market" than a forte solution (we started this about 6 months
back and are in production for the past 1 month). This may not have all the
features that FORTE offers, but for our purposes and I feel in similar
applications, what we got was what we needed. By no means, this is going to
meet all information tecnology needs for everyone and in many situations I
believe FORTE would be well suited than any other tool.
I still use FORTE can would continue to do so for some of the solutions that
we develop, but I do not think that one shoud be using FORTE for "any
development that is bigger than a breadbox" as Mr. Fatcheric suggests in the
attached message, simply because if I do that, than I think that in some
cases I would be selling the user a tank when the user just needs a rifle.
I consider giving my clients the most value for their money in getting this
solution developed. I would suggest my clients FORTE when I think they needs
them but would definitely suggest another solution if I think that they can
get their solution developed and get more value for their money using some
other tool. Towards this end I would like to find out what kind of solutions
people are developing and what kind of performance they are getting
specially related to Windows platform.
Any information about the benefits (actual benefits) you are getting from
FORTE would be highly appreciated which would let a lot of us decide when to
use FORTE and when not to use FORTE to meet ours and our clients'
everchanging information technology needs.
- Ari Singh
[email protected]
Ari Singh wrote a provocative piece questioning the benefits of Forte
in "Windows only", non-large scale applications. Rather than get into
a large philosopical discussion, I would like to illustrate my point
with an example taken from a current Forte project.
First, my background: 10+ years in Client server applications. Worked
for several years at Oracle and have experience with Sybase. Worked
extensively with a 2 tiered CS product (Uniface) and write C and C++.
NOT a Windows expert.
In our current application, the requirement is to allow the user to
browse literally thousands of records on the Windows Client. There will
never be lots of users doing this, but the ones that do must have
reasonable performance. Our initial tests indicated that if we simply
had the server pump the data to the client, we would have significant
performance problems and face memory limitations on the PC. SO we
utilized Forte's N-tiered capabilities. When the user starts a query
(using dynamic sql with user controlled WHERE and ORDER BY), we start
an asynchronous retrieval on the server with data is cached in an
anchored object on the server. When the query has found the first
THIRTY (30) records (2 screens worth), it posts an event to the client
and the client request the first thirty. The retrieval process continues
independently while the user can browse data on the client. Not until
the user scrolls down far enough does the client again request more
data. If the user quits from the screen or starts a new query, the
first one is cancelled. Otherwise, the query runs to completion on the
server.
This approach gives us 3-5 second response time regardless of the size
of the query result set. It minimizes the data on the client (moving
us toward a thin client). The kicker is that with the help of Martha
Lyman from Forte, we developed this technique in about 4 hours! Add
to this all the standard inheritance, OO stuff, partitioning,
customized monitoring, etc, etc, and IT IS MY OPINION that Forte
is a GOOD tool for any development that is bigger than a breadbox
and worth the $$$. And that's the way it is.... SO there...
Jerry Fatcheric
Relational Options, Inc.
Florham Park, New Jersey
201-301-0200
201-301-00377 (FAX)
[email protected]RE : Jerry Fatcheric's message about "Who would benefit from Forte?"
With regards the point mentioned in the attached message from Jerry
Fatcheric below, I would like to illustrate my point. I implemented in both
Visual Basic and Delphi, the example that is mentioned in the attached
message, about a browser application, having the capability to browse
thousands of records with the inital screenful needing to come ASAP. It took
me less than 2 minutes to implement this in VB (I timed it). Just threw a
"remote data" control and a "DBGrid" control on a form, set a few properties
and wrote a "select *" sql specifying that only 30 records be returned at a
time. For a table with 4K records, the first 30 came in and got displayed in
less than 2 seconds. In Delphi, the response was even better and whole 4K of
record could be retrieved in less than 4 second. (Yes less than 4 seconds
for retrieving 4000 records from a DB2/NT database running on a remote
machine). Even I could not believe the performance of Delphi which I haven't
used that much. These tools are THE fastest way to get the data from a
database server to a windows client. These will perform any day better than
FORTE. One of the problem that I came across FORTE in one of situations like
this was data movement across nodes is very costly. In one of our
applications, since we stored the data as objects, in a similar situation as
you have mentioned, the performance of moving a lot of data form the server
to the client was not very good and in consulation with FORTE technical
support we had to convert the data in objects to scalar (delimited string),
move across node, and convert the data back to object at a client.
Performance increase - 40 secs. vs 120 secs. earlier.
About my background. I have worked about 8 years in application development
and for the past 4 years have been working in a client server environment.
Being a consultant, I have used many tools, including FORTE for one year, to
provide my clients with the most bang for their buck, which to me is the
topmost priority as a Consultant. I do not decide for my clients what
technology they should use but sure evaluate the various options they have
and recommend more than one solutions, listing the advantages and
disadvantages.
Currently working on coming up with a solution for a client with a customer
service application need with around 50 users now, scaling up to 100 users
in the future. The best solution that I could come up with was a logical
3-tier with the presentation and the business layer running on NT
workstation (client) and the database on NT server (server). With all the
processing on a powerful and healthy (not "fat") client the system, I feel
can scale very well. For a 500 user system, you literally have 500
application server (physically on the client machine) being served by one
data server. To the data server, having a physical middle tier between the
client and the data server, I feel would not help, at least in our
situation. Almost everything that the middle tier could do to reduce the
load on the data server can be handled by the "business layer" running on
the client machine. It does mean that each user connects to the database
directly so in a case of 500 user, there are 500 connections to the database
but lately with the sophisticated DBMS, this is no longer an issue. The DBMS
can manage this many user very economically (read the benchmark about SQL
server with 5000, yes 5k user at "www.microsoft.com/sql") and almost as well
as a middle tier. It is fault tolerant - nothing can bring down the system
except a client failure, the data server failure or a network failure, the
same failure points as a N-Tier solution unless you are replicating or
duplicating the database. In our solution our application is as scaleable as
the database is, and the databases available today are very scaleable if you
look at the current database technology offerings.
As you may have guessed the abovementioned solution is cheaper with a very
fast "time to market" than a forte solution (we started this about 6 months
back and are in production for the past 1 month). This may not have all the
features that FORTE offers, but for our purposes and I feel in similar
applications, what we got was what we needed. By no means, this is going to
meet all information tecnology needs for everyone and in many situations I
believe FORTE would be well suited than any other tool.
I still use FORTE can would continue to do so for some of the solutions that
we develop, but I do not think that one shoud be using FORTE for "any
development that is bigger than a breadbox" as Mr. Fatcheric suggests in the
attached message, simply because if I do that, than I think that in some
cases I would be selling the user a tank when the user just needs a rifle.
I consider giving my clients the most value for their money in getting this
solution developed. I would suggest my clients FORTE when I think they needs
them but would definitely suggest another solution if I think that they can
get their solution developed and get more value for their money using some
other tool. Towards this end I would like to find out what kind of solutions
people are developing and what kind of performance they are getting
specially related to Windows platform.
Any information about the benefits (actual benefits) you are getting from
FORTE would be highly appreciated which would let a lot of us decide when to
use FORTE and when not to use FORTE to meet ours and our clients'
everchanging information technology needs.
- Ari Singh
[email protected]
Ari Singh wrote a provocative piece questioning the benefits of Forte
in "Windows only", non-large scale applications. Rather than get into
a large philosopical discussion, I would like to illustrate my point
with an example taken from a current Forte project.
First, my background: 10+ years in Client server applications. Worked
for several years at Oracle and have experience with Sybase. Worked
extensively with a 2 tiered CS product (Uniface) and write C and C++.
NOT a Windows expert.
In our current application, the requirement is to allow the user to
browse literally thousands of records on the Windows Client. There will
never be lots of users doing this, but the ones that do must have
reasonable performance. Our initial tests indicated that if we simply
had the server pump the data to the client, we would have significant
performance problems and face memory limitations on the PC. SO we
utilized Forte's N-tiered capabilities. When the user starts a query
(using dynamic sql with user controlled WHERE and ORDER BY), we start
an asynchronous retrieval on the server with data is cached in an
anchored object on the server. When the query has found the first
THIRTY (30) records (2 screens worth), it posts an event to the client
and the client request the first thirty. The retrieval process continues
independently while the user can browse data on the client. Not until
the user scrolls down far enough does the client again request more
data. If the user quits from the screen or starts a new query, the
first one is cancelled. Otherwise, the query runs to completion on the
server.
This approach gives us 3-5 second response time regardless of the size
of the query result set. It minimizes the data on the client (moving
us toward a thin client). The kicker is that with the help of Martha
Lyman from Forte, we developed this technique in about 4 hours! Add
to this all the standard inheritance, OO stuff, partitioning,
customized monitoring, etc, etc, and IT IS MY OPINION that Forte
is a GOOD tool for any development that is bigger than a breadbox
and worth the $$$. And that's the way it is.... SO there...
Jerry Fatcheric
Relational Options, Inc.
Florham Park, New Jersey
201-301-0200
201-301-00377 (FAX)
[email protected] -
FW: Who is FORTE for ? Who would benefit from FORTE?
Hi-
You made some good points in your recent posting. I like Forte' but also
see
advantages to using other tools based on specific requirements. See my
responses
below.
From: [email protected][SMTP:[email protected]]
Sent: Monday, August 12, 1996 10:03 PM
To: [email protected]
Subject: Who is FORTE for ? Who would benefit from FORTE ?
Who is forte really for ? Who would benefit from FORTE ?
The main benefit of Forte' is the abilitity to develop on a particular
platform and deploy to a multi-tier environment with platforms of any
type.
Specifically I am wondering if it makes a lot of sense for
shops having all Microsoft Windows platform - both for client and
server to gain from FORTE.
IMHO, Forte' may not be the ideal solution in that kind of
environment. Although, it would work fine, there are plenty
of windows based tools and apps that would work fine and
probably faster and cleaner.
I think that there are so many easy-to-use and economical tool
which can do RAD and give decent client-server performance on
Microsoft Windows platform costing much less than a FORTE solution.
I agree. Forte' is expensive and would be overkill if you just needed
a C++ app using ODBC going against a small local database.
And with these solutions you can easily put your data server on a
Unix box and access it seamlessly on Windows platform without
any extra tools (almost all popular databases come with
this database connectivity built-in).
Correct, as long as you don't need to put business logic
on the same server as well. You add a lot of complexity
going to multi-tier but add the advantage of load balancing
and failover.
What I think is unless you have run your application (or at least
a piece of your application) on operating systems like Unix or DEC
or unless if you have different platforms in your organization to
deploy your application on, there is not much you'll gain from FORTE.
I like Forte', but I have to agree with you. In a straight Windows 95/NT
environment with a Unix database server, I'd go with something like
MS Viz C++ and MS Access or Oracle. Forte' offers a lot for the multi-
platform environment but does have a fairly steep learning curve,
especially
when it comes to the system admin piece. And initially, your system will
need a lot of hand holding till all the pieces fit. The lack of CM,object persistence,
use of their proprietary object broker etc are things that they'llneed to address
in upcoming releases to remain competitive.
Also if your application is not for a large number of users (large,
I think is 200+ user), you gain little from your investment in FORTE.
I believe that in this case you do not need a middleware, you can
have logical 3-tier (or n-tier) and deploy your application on
physical 2-tier (client and server) with more than one logical tier
running on one of the physical tier (client or server). Middleware,
I believe, is not worth the cost, effort and time unless you
absolutely need it.
Agreed, but it depends on your needs and requirements. We
at Corning, are developing some apps in Forte' and some in
C++ and are looking at object broker middleware to allow all
apps to share common objects. Our determination as to which
language/environment to use is based on many factors, some of
which you've already mentioned. Our servers are Vax OVMS, Alpha VMS,
and Alpha NT. Our clients are PCs (NT 3.51, NT4.0, W95, W3.1) and Alpha NT.
We had a couple of Macs but development and end user response was so
painfully
slow that they were replaced with far superior NT PCs (again, IMHO).
PS- You may want to check out Forte' Express before you make adecision, especially
if you are building DB apps with table editors/browsers. It is anexcellent rapid development
tool, and teamed with Select Enterprise (for round trip Development<--> Documentation)
it makes a great package._______________________________
Jeff Austin
Corning / CTE
[email protected]
http://fortefy.wilmington.net>
Hi-
You made some good points in your recent posting. I like Forte' but
also see
advantages to using other tools based on specific requirements. See my
responses
below.
From: [email protected][SMTP:[email protected]]
Sent: Monday, August 12, 1996 10:03 PM
To: [email protected]
Subject: Who is FORTE for ? Who would benefit from FORTE ?
Who is forte really for ? Who would benefit from FORTE ?
The main benefit of Forte' is the abilitity to develop on a particular
platform and deploy to a multi-tier environment with platforms of any
type.Specifically I am wondering if it makes a lot of sense for
shops having all Microsoft Windows platform - both for client and
server to gain from FORTE.
IMHO, Forte' may not be the ideal solution in that kind of
environment. Although, it would work fine, there are plenty
of windows based tools and apps that would work fine and
probably faster and cleaner.I think that there are so many easy-to-use and economical tool
which can do RAD and give decent client-server performance on
Microsoft Windows platform costing much less than a FORTE solution.
I agree. Forte' is expensive and would be overkill if you just needed
a C++ app using ODBC going against a small local database.And with these solutions you can easily put your data server on a
Unix box and access it seamlessly on Windows platform without
any extra tools (almost all popular databases come with
this database connectivity built-in).
Correct, as long as you don't need to put business logic
on the same server as well. You add a lot of complexity
going to multi-tier but add the advantage of load balancing
and failover.What I think is unless you have run your application (or at least
a piece of your application) on operating systems like Unix or DEC
or unless if you have different platforms in your organization to
deploy your application on, there is not much you'll gain from FORTE.
I like Forte', but I have to agree with you. In a straight Windows 95/NT
environment with a Unix database server, I'd go with something like
MS Viz C++ and MS Access or Oracle. Forte' offers a lot for the multi-
platform environment but does have a fairly steep learning curve,
especially
when it comes to the system admin piece. And initially, your system will
need a lot of hand holding till all the pieces fit. The lack of CM,
object persistence,
use of their proprietary object broker etc are things that they'll
need to address
in upcoming releases to remain competitive.Also if your application is not for a large number of users (large,
I think is 200+ user), you gain little from your investment in FORTE.
I believe that in this case you do not need a middleware, you can
have logical 3-tier (or n-tier) and deploy your application on
physical 2-tier (client and server) with more than one logical tier
running on one of the physical tier (client or server). Middleware,
I believe, is not worth the cost, effort and time unless you
absolutely need it.
Agreed, but it depends on your needs and requirements. We
at Corning, are developing some apps in Forte' and some in
C++ and are looking at object broker middleware to allow all
apps to share common objects. Our determination as to which
language/environment to use is based on many factors, some of
which you've already mentioned. Our servers are Vax OVMS, Alpha VMS,
and Alpha NT. Our clients are PCs (NT 3.51, NT4.0, W95, W3.1) and
Alpha NT.
We had a couple of Macs but development and end user response was so
painfully
slow that they were replaced with far superior NT PCs (again, IMHO).
PS- You may want to check out Forte' Express before you make a
decision, especially
if you are building DB apps with table editors/browsers. It is an
excellent rapid development
tool, and teamed with Select Enterprise (for round trip Development
<--> Documentation)
it makes a great package._______________________________
Jeff Austin
Corning / CTE
[email protected]
http://fortefy.wilmington.net -
How does the production system take the benefit from user-exits.
How does the production system take the benefit from user-exits.
and it is not the production system that benefits. its the company and the people working with SAP that benefits from the user exits which allow SAP to be altered for the company specific situations.
-
How can I know the request is come from the link in header in the filter?
I am using the tile for layout management and each page has a header, menu, and content body. I want to do something at the filter If the request is come from the commandlinks in the header and menu.
How can I know the request is come from the link in header in the filter?Basically all you have to go on is the request data. Examine the encode/decode requirements for commandLink; you may be able to determine from the request attributes which commandLink has been invoked.
-
How can we know WD Appl is running from portral or normal
Hi Experts,
Could any body help in this...
How can we know one application is running from portal or normal application??
Thanks,
kris..Hi,
Below code might help you.
data: lo_api_component TYPE REF TO if_wd_component,
lv_cl_environment TYPE i,
lo_wd_application TYPE REF TO if_wd_application.
* get application environment: portal or non-portal environment
lo_wd_application = lo_api_component->get_application( ).
lv_cl_environment = lo_wd_application->get_client_environment( ).
IF lv_cl_environment = if_wd_application=>co_client_environment-portal.
endif.
Thanks,
Kranthi. -
How can i know where is my iphone from ??
How can i know where is my iphone from, i know only imei, and numbers from back of iphone
i have blocked iphone and i dont know where is it fromCall Apple and ask. There is no way to identify the origin of an iPhone from any of it's numbers. All iPhones are born equal.
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Dear community members,
I'm new here. I have a question about searching ebooks in itunes search API.
If I know ISBN of one book, either 10-digit ISBN or 13-digit ISBN, how could I know its ebook ID in itunes store?
In other words, is there any rule that I could convert regular ISBNs to ebook IDs? Or where I could find the reference?
Thank you.Try searching Amazon or Barnes & Noble or your local library, if they have an online search, for the ISBN. That will give you the title of the book so you can then search the iBooks store. Or just buy the book from Amazon or B&N as a Kindle or Nook book; both have viewers for Windows and Mac as well as iOS devices.
Regards. -
How may i know wich data are deleted from my sql database.
Im using sql server 2005 someone deleted some transaction from my database.In my database audit is not enable.
How may i know wich data is deleted? plz help me.Hi,
If there has been little or no activity since the deletion, then the out-of-the-box trace may be of help. Try running:
DECLARE @path varchar(256)
SELECT @path = path
FROM sys.traces
where id = 1
SELECT *
FROM fn_trace_gettable(@path, 1)
[In addition to the out-of-the-box trace, there is also the less well-known 'black box' trace, which is useful for diagnosing intermittent server crashes.
According to your description, there is a way that you can recover most of the missing data with the aid of Transaction Logs and LSNs (Log Sequence Numbers). Usually, if you know when your data was deleted then the challenge to recover the deleted data is
not as difficult. But, if you do not know the date and time when the data was deleted, then we will have to find a different way of identifying the data. For more information, there are steps about recovering deleted data in SQL Server, you can review them.
http://sqlbak.com/blog/recover-deleted-data-in-sql-server/
In addition, there are steps about know who and when deleted the data.
http://raresql.com/2012/10/24/sql-server-how-to-find-who-deleted-what-records-at-what-time/
Regards,
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How do you know if my iPod is from the second gen?
hello I would like to know if my iPod is an second generation Ipod is:), but i realy don't know how to know it.
And wat can you do when you update your iPodThe second gen iPod has the hard drive capacity (4GB or 6GB) stated on the rear of the case. The icons on the clickwheel are the same colour as the iPod. It wasn't supplied with a power adaptor.
Updating the iPod puts the latest version iPod software on it. However the most recent updater didn't add anything new for the iPod. -
How do I know if I'm disconnected from the internet?
I just got the palm centro 2 days ago and I was playing around with it and accidently signed into yahoo email. The green arrows appeared and I closed my phone immediately because I don't have a data plan but now, the black arrow is there. What does the black arrow mean and how do I get rid of it? Am I still connected? I read other threads about similar problems but I don't really understand. Where do I find the preference application?
Please help!
Thanks in advance!
Post relates to: Centro (AT&T)Hello and thank you for using the Palm Help Forums!
I would remove the battery and then reinsert it. This is a soft reset. This should disconnect you from the internet. Also as long as the arrows aren't moving you shouldn't be charged. The way wireless carriers usually charge for data is $0.01 per kb for download. Charges may vary per carrier but that is approx. You should only be charged when you are downloading, yes this includes surfing. You download a webpage before being able to look at it. It's usually not much data but not having a data plan and using web adds up QUICK!
Hopefully this helps. Worse comes to worse, when you get your bill and if you have a decent amount of data charges I'm sure you can plea with you carrier that it was an accident and if they could credit you.
-Pat
Post relates to: Treo 800w (Sprint)
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