time.time or time.clock
I'm having some cross platform issues with timing loops. It seems
time.time is better for some computers/platforms and time.clock others, but
it's not always clear which, so I came up with the following to try to
# Determine if time.time is better than time.clock
# The one with better resolution should be lower.
if time.clock() - time.clock() < time.time() - time.time():
clock = time.clock
clock = time.time
Will this work most of the time, or is there something better?
On Jan 14, 7:05 am, Ron Ad...time.clock() or time.time()
What's the difference between time.clock() and time.time()
(and please don't say clock() is the CPU clock and time() is the actual
time because that doesn't help me at all :)
I'm trying to benchmark some function calls for Zope project and when I
use t0=time.clock(); foo(); print time.clock()-t0
I get much smaller values than when I use time.clock() (most of them
0.0 but some 0.01)
When I use time.time() I get values like 0.0133562088013,
To me it looks like time.time() gives a better measure (at least from a
statistical practical point of view).
am I doing this wrong:
print (time.time() / 60) / 60 #time.time has been running for many hours
if time.time() was (21600/60) then that would equal 360/60 which would
be 6, but I'm not getting 6 so I'm not doing the division right, any tips?
On Sat, 24 Jan 2004 13:01:40 -0500, Bart Nessux <firstname.lastname@example.org>
>am I doing this wrong:
>print (time.time() / 60) / 60 #time.time has been running for many hours
>if time.time() was (21600/60) then that would equal 360/60 which would
>be 6, but I'm not getting 6 so I'm not doing the divisi...Is time.time() < time.time() always true?
So, I was blazin' some mad chronix, as they say, and got on to thinking
The question was, is the statement:
time.time() < time.time()
always true? Seems it should be false, since the statement itself
occurs at one time instant.. but of course we know that python doesn't
execute code that way.. So my question is, why doesn't Python work this
(PS, I wasn't smoking anything, its a figure of speech :) )
On 21 Nov 2006 15:10:25 -0800, flamesrock <email@example.com> wrote:
> So, I was blazin' some mad chronix, as they say, and got on to th...time.time() strangeness #4
Ok, my final solution is to add the D3DCREATE_FPU_PRESERVE flag. It didn't
harm performance in a noticeable way at all. I was under the impression
SSE would be affected by this, too. Additionally I was under the
impression that float precision would suffice for time.time(). Obviously I
was blatantly wrong :-)
Thanks to Gabriel, Ross and Roel for commenting on this and sharing their
They should really make the fpu preserve flag the default. It just causes
very sneaky bugs.
Nitro <firstname.lastname@example.org> wrote:
>They should really make the fpu preserve...time.time() strangeness #3
> Nevertheless time.time() shouldn't fail here unless DirectX is really
> badly tinkering with my system.
I can tell you more now. If I pass D3DCREATE_FPU_PRESERVE while creating
the DirectX device the bug does not appear. This flag means "Direct3D
defaults to single-precision round-to-nearest" (see ) mode.
Unfortunately it is not an option to pass this flag, I need the
performance boost it gives.
Can somebody tell me how this interacts with python's time.time()? I
suppose it's some kind of double vs. float thing or some fpu asm code
-Matt...time.time() strangeness #2
> The granularity of time.time can be quite large, maybe as much
> as 1 second in some systems. Also, if the user can set the time,
> the output might not be monotone. They might set the clock backwards
> if it has drifted ahead, or something like that. Better to use an
> explicit counter if you need a monotonically increasing sequence.
It's not the granularity, after all it works without the single
CreateDevice. With the line uncommented the value doesn't even change
after 2 minutes.
I am not sure what you mean with explicit counter. I think I would still
need...RE: Is time.time() < time.time() always true?
Chris Mellon wrote:
> On 21 Nov 2006 15:10:25 -0800, flamesrock <email@example.com>
>> So, I was blazin' some mad chronix, as they say, and got on to
>> thinking about Python.=20
>> The question was, is the statement:
>> time.time() < time.time()
>> always true? Seems it should be false, since the statement itself
>> occurs at one time instant.. but of course we know that python
>> doesn't execute code that way.. So my question is, why doesn't
>> Python work this way?=...time in milliseconds by calling time.time()
I am trying to measure some system response time by using the time.time
() or time.clock() in my script. However, the numbers I get are in
10s of milliseconds.
1248481670.34 #from time.time()
0.08 #from time.clock()
That won't work for me, since the response time may be only a few
My environment is Solaris 10 with Python 2.4.4 (#7, Feb 9 2007,
SunOS 5.10 Generic_137112-07 i86pc i386 i86pc
The tricky thing is, if I run the python interpreter and import the
time module, I can get a time floating number in better precision by
cal...delta time = time stop
I'm using Python to parse a bunch of s/w test files and make csv files for later report generation by MS ACCESS....(my boss
loves the quick turn-around compared to C). Each log file may contain one or more 'sessions', and each session may contain
one or more 'nodes'.
Each session in the log has an ASCII start and stop time, as does each node.
I have the basic parse part done for parameters, errors, etc., but noticed my routine for determining how long each
session/node took (delta time) was a bit repetitive, so decided to make a 'stand-alone' routine to handle th...Timing run time
I would like to compare the speed of two algorithms
solving the same problem.
As far as I understood, the tic-toc command gives
the time difference between the beginning and the
end of the computation, without taking into account
the time spent by the processor doing something else.
I'm using a multi-processor multi-users machine and
the CPU time used by my process is not 100% and
is not constant. The measured speeds are fluctuating
so much that I can hardly conclude anything.
Is it possible to obtain realistic measurements of
the speed of my algorithms?
Thanks for your help
Dear Didi...Time Divided by Time is What?
I thought a time quantity divided by a time quantity would be a real,
but it seems to be an integer. Can anyone confirm that? I can't find a
reference that discusses this.
On Saturday, November 17, 2012 7:12:31 PM UTC-5, rickman wrote:
> I thought a time quantity divided by a time quantity would be a real, but it seems to be an integer. Can anyone confirm that? I can't find a reference that discusses this. Rick
Yes, time/time is an integer. If you need more precision than integer than you can do something like this as an example...
Kevi...covert standard time (AMPM time) to Military time
What is the best way to covert standard time (AMPM time) to Military time?
@1 mytime 5.;
@6 ampm $2.;
input @1 mytime $ 5.
@6 ampm $2.;
format new_var time.;
On Feb 12, 1:22=A0am, hummingbird10...@HOTMAIL.COM (Annie Lee) wrote:
> What is the best way to covert standard time (AMPM time) to Military time=
> data test;
>...convert time in and time out
because I have a list of data that contains Clock_in and Clock_out,
how can I know the total hours that have been used where I have
converted it to Clock_in at 46200 and Clock_out at 48061
how can I know the total hours that have been used?
by the way, did I need to create two new data to merge togather
Not sure what you have or did. If those numbers represent the number
of seconds since midnight, and you don't have any in and out
combinations that span across midnight, you could use something like:
input clock_in clock_out;
format x y time.;
hours=3D(c...convert time string in UTC to time in local time
I'm guessing there is an easy way to do this but I keep going around
in circles in the documentation.
I have a time stamp that looks like this (corresponding to UTC time):
start_time = '2007-03-13T15:00:00Z'
I want to convert it to my local time.
start_time = time.mktime(time.strptime(start_time, '%Y-%m-%dT%H:%M:
start_time -= time.timezone
This was working fine now, but if I do it for a date next week (such
as March 13th in the above example), it breaks because my local time
moves to daylight savings time this weekend. So my time is now off by
an hour....Times Returned by TIME()
I would have posted this on the Quicksilver group but couldn't find it.
We have a Quicksilver system that picks up files from a Windows eftpos
application. There have been some slowdowns in the process and we've
added some logging to identify the culprit. When the QS app detects a
file, it writes a log record using time derived from TIME(). It shells
out to a Clipper app which returns ADIR() data on the file. What we are
finding on the test PC (XP) is that the ADIR() time of the file is
approximately 2 seconds later than the TIME() value recorded.
Does anyone have an explanation?
Th...Time + time.local
I cant seem to get localtime to work, can anyone share some gotchas?
## check environment is setup
[dc@fox:~]$ echo $TZ
# so the env is coming through ok... or is it?
=> Tue Jan 04 06:21:25 UTC 2011
=> Tue Jan 04 06:21:02 +0000 2011
### so it seems zone is being ignored
# is there any way to override/forcibly set the timezone?
ir...Which To Use
Is Times the standard serif font? I'm deciding which font to use for a book I'm
writing. My printer, HP 4ML PostScript, has the resident PostScript font Times
Roman (strangely, the bold, italic and bold italic are Times). I recall that
PageMaker 5 pushed for using Times. I now have PageMaker 7, and in its font
list (the same list that appears in any application) is Times and Times New
Roman. Would appreciate your explanation as to how resident printer fonts
relate to whatever font I select from the font list (these are usually True
Type, although there are other kinds). Also, a recomme...convert time to ruby time to calculate the time difference.
I have following two time stamps,
12:35:10:757 & 12:35:10:759
I want to convert them to ruby time and find the time difference.
which is a 2 micro seconds.
I would appreciate any help..
thanks in advance
Posted via http://www.ruby-forum.com/.
Il 20/09/10 17.21, Ruwan Budha ha scritto:
> Hi all,
> I have following two time stamps,
> 12:35:10:757& 12:35:10:759
> I want to convert them to ruby time and find the time difference.
> which is a 2 micro seconds.
mT=T...time sync? time servers give wrong time
I'm in toronto. Eastern Standard time. I use netdate linux to sync my
clock. I use:
/usr/sbin/netdate -l 2 localhost 22.214.171.124 126.96.36.199
This was working fine until last week when the DST changed. Now it
reports one hour behind. Every name server does this. For example:
localhost +0.000 Thu Mar 13 19:17:51.519
188.8.131.52 -0.669 Thu Mar 13 19:17:51.000
184.108.40.206 -0.718 Thu Mar 13 19:17:51.000
Local host firewall has best time, so not setting date
localhost +0.000 Thu Mar 13 19:17:51.718
But its 20:17 right now in EST.
How do I f...Time Of Day From a time
Anyone know how to calulacute the time of day, ie hour 1-24 for a time
stored in a database, using just a time in a record???
> Anyone know how to calulacute the time of day, ie hour 1-24 for a time
> stored in a database, using just a time in a record???
> Dennis Mason
If you stored the time value as a DateTime data type, you can display it
in 24hr time using the Format() function:
In Debug window:
♥TIME⑧②ㆍСОМ인터넷토&#...timing and timing reports (again)
ich have question about timing.
i have an edk design with microblaze (using spartan 3e 500) where i
use an ip core that i wrote myself.
when i implement the design i get the following timing output in my
Constraint | Check | Worst Case | Best
Case | Timing | Timing
Slack | Achievable | Errors | Score
-------------------------------------------------------------------------------...server time != my time
on a timestamp, what's the best way to make the timestamp show as my
time, rather than the server's time?
i.e., it is 10:49 am here but the code on the server will create a
timestamp of 2:49 pm. I want it to be stamped as 10:49 am
> on a timestamp, what's the best way to make the timestamp show as my
> time, rather than the server's time?
> i.e., it is 10:49 am here but the code on the server will create a
> timestamp of 2:49 pm. I want it to be stamped as 10:49 am
Take a look at: