Home

Gettimeofday timezone

gettimeofday()--Get Current UTC Time - IB

  1. The gettimeofday() function retrieves the current Coordinated Universal Time (UTC) and places it in the timeval structure pointed to by tp. If tzp is not NULL, the time
  2. Both ftime and gettimeofday are returning 0 for the current timezone in Ubuntu 16. The timezone is set correctly in the date and time settings provided by Ubuntu
  3. Die Funktion gettimeofday ist eine POSIX-konforme Funktion, die die aktuelle Zeit bis auf eine Mikrosekunde genau abruft. Die Funktion nimmt zwei Argumente entgegen;
  4. When _ALL_SOURCE is defined, the gettimeofday () function: invokes tzset () to set the values of the timezone and daylight external variables. converts the value of
  5. I change the question: I have a TZ variable on my system set to MET-1METDST that's ok and I get correct time when I use the command date. The problem I have is that

The gettimeofday() function set the time in timeval (current_time) structure member. tv_sec is the integral number of seconds elapsed since the start of the UNIX epoch gettimeofday () returns the current wall clock time and timezone. time () returns a subset of this info (only whole seconds, and not timezone). Using these

gettimeofday() Mit der Funktion time() erhalten Sie die aktuelle Uhrzeit auf die Sekunde genau. Wenn Sie allerdings eine genauere Zeitauflösung benötigen, verwenden Sie The gettimeofday(), ftime(), and settimeofday() functions get and set the time and timezone information stored in the kernel. The gettimeofday() function gets The gettimeofday() function fills two structures with details about (you guessed it) the current time of day: int gettimeofday( struct timeval *, struct tzp *); The Call tzset() to update C library runtime data for the new time zone. Once these steps are completed, call the standard C library function localtime(), and it will

The functions gettimeofday() and settimeofday() can get and set the time as well as a timezone. The tv argument is a struct timeval (as specified in <sys/time.h>): struct timezone tzone; gettimeofday (&now, NULL); gettimeofday (&now, &tzone);} # endif: This comment has been minimized. Sign in to view. Copy link Quote reply Die gettimeofday () Funktion setzt die Zeit im timeval (current_time) Strukturmember. tv_sec ist die ganzzahlige Anzahl von Sekunden, die seit dem Start des UNIX-Epoche

DESCRIPTION. The functions gettimeofday () and settimeofday () can get and set the time as well as a timezone. The tv argument is a struct timeval (as specified in On a non-Linux kernel, with glibc, the tz_dsttime field of struct timezone will be set to a nonzero value by gettimeofday () if the current timezone has ever had or will Use the gettimeofday Function to Calculate Elapsed Time in a Code Block in C. The gettimeofday function is POSIX compliant function that retrieves the current The functions gettimeofday() and settimeofday() can get and set the time as well as a timezone. The tv argument is a struct timeval (as specified in <sys/time.h>

C++ (Cpp) gettimeofday - 30 examples found. These are the top rated real world C++ (Cpp) examples of gettimeofday extracted from open source projects. You can rate In our example, we pass address of the timeval time to the gettimeofday function, the Linux kernel fills the given timeval structure and returns it back to us

posix - Why is the gettimeofday timezone wrong? - Stack

gettimeofday (bool $as_float = false): array|float Es handelt sich um eine Schnittstelle zum Systemaufruf von gettimeofday (2). Die Funktion gibt ein assoziatives Array gettimeofday (bool $as_float = false): array|float This is an interface to gettimeofday (2). It returns an associative array containing the data returned from the system

The gettimeofday () function returns the current time time.gmtime ([secs]) ¶ Convert a time expressed in seconds since the epoch to a struct_time in UTC in which the dst flag is always zero. If secs is not provided or Returns the time in relative to the UNIX epoch starting in 1970 using the Coordinated Universal Time (UTC), same as gettimeofday() user space. This is used for all

The time fields specify when, in the local time currently in effect, the change to the other time occurs. If omitted, the default is 02:00:00. Here is an example Ein C-Kurs für Anfänger bis Fortgeschrittene. Dieser C-Kurs soll aber von der Masse dieser Angebote im Web abheben. Hier können sie wirklich mit Null Wissen anfangen. Es sind keinerlei Vorkenntnisse nötig. Nur ein bißchen Wissen eines Betriebssystems sollten vielleicht schon vorhanden sein

Contents. gettimeofday (2) gettimeofday (2) NAME [Toc] [Back] gettimeofday - get the date and time SYNOPSIS [Toc] [Back] #include <sys/time.h> int gettimeofday (struct timeval *tp, void *tzp); DESCRIPTION [Toc] [Back] The gettimeofday () function obtains the current time, expressed as seconds and microseconds since Epoch, and stores it in the. struct timezone tzone; gettimeofday (&now, NULL); gettimeofday (&now, &tzone);} # endif: This comment has been minimized. Sign in to view. Copy link Quote reply rounaksingh commented Dec 6, 2017. Please attach a license to the code. I can not use it unless you put a license. This comment has been minimized. Sign in to view. Copy link Quote reply hanuruh commented May 3, 2018. How do i printf. Get current time using ESP32 and gettimeofday () on Arduino IDE. I am using a ESP32 module and am coding in Arduino IDE. I was able to get the current date and time by polling NTP servers and using struct tm and getLocalTime () function. However, the time I receive back from the NTP server doing so is in seconds and I would like to have the. The Time::HiRes module implements a Perl interface to the usleep, nanosleep, ualarm, gettimeofday, and setitimer/getitimer system calls, in other words, high resolution time and timers. See the EXAMPLES section below and the test scripts for usage; see your system documentation for the description of the underlying nanosleep or usleep , ualarm , gettimeofday , and setitimer / getitimer calls

Verwendung der gettimeofday-Funktion in C Delft Stac

  1. It is close to, but not necessarily in lock-step with, the clocks of time (above) and of gettimeofday (below). A second clock constant which is not universal, but still very common, is for a clock measuring monotonic time. Monotonic time is useful for measuring elapsed times, because it guarantees that those measurements are not affected by changes to the system clock. Macro: clockid_t CLOCK.
  2. I learned, that gettimeofday and sys/time.h is LINUX only. So we certainly have to add some workaround into Windows what's given here So, what I have to do?! 1. Copy and paste code as snipped into my project files? 2. Add those fieles to my project map? 3. Same, but use a common system directory instead, wich would be read with the #include sys/ command? - And if so.
  3. gettimeofday(&curTime, NULL); ⋮ time(&rawtime); Suppose the system time is approximately HH:MM:00.999 when curTime is assigned, but a few microseconds later at HH:MM:01.000 when rawtime is assigned. This means that we'll print HH:MM:01.999, which is quite far from either value. Swapping the two calls won't help - that would result in HH:MM:00.000, which is also wrong. We need to get a single.

gettimeofday(), gettimeofday64() — Get date and tim

Note: time zone information is no longer provided by this interface. See localtime for information on how to retrieve it. The system's notion of the current UTC time is obtained with the gettimeofday() call, and set with the settimeofday() call. The time is expressed in seconds and microseconds since midnight (0 hour), January 1, 1970. The. Once you identify which time zone is accurate to your location, run the following command as root or sudo user: sudo timedatectl set-timezone <your_time_zone>. Copy. For example, to change the system's timezone to America/New_York you would type: sudo timedatectl set-timezone America/New_York. Copy Die kurze Version. gettimeofday()erfordert einen Zeiger auf einem struct timevalmit den Zeitdaten zu füllen. So zum Beispiel, würden Sie so etwas tun: #include <sys/time.h> #include <stdio.h> int main() { struct timeval tv; gettimeofday(&tv, NULL); // timezone should be NULL printf(%d seconds\n, tv.tv_secs); return 0;} Die lange Version. Das wirkliche Problem ist , dass gcc automatisch mit. The time returned by gettimeofday() is affected by discontinuous jumps in the system time (e.g., if the system administrator manually changes the system time). If you need a monotonically increasing clock, see clock_gettime(2). Macros for operating on timeval structures are described in timeradd(3)..

how to set timezone variable in gettimeofday - Hewlett

  1. gettimeofday() and time() should only be used to get the current time if the current wall-clock time is actually what you want. They should never be used to measure time or schedule an event X time into the future. The point is accurate, but I feel the author missed another set of problems. Basically, the word time refers to (at least) two distinct things
  2. Returns the time in relative to the UNIX epoch starting in 1970 using the Coordinated Universal Time (UTC), same as gettimeofday() user space. This is used for all timestamps that need to persist across a reboot, like inode times, but should be avoided for internal uses, since it can jump backwards due to a leap second update, NTP adjustment settimeofday() operation from user space. ktime_t.
  3. gettimeofday and clock_gettime. gettimeofday and clock_gettime are POSIX APIs to get the time. gettimeofday is easy to use, but does not specify or tell the resolution of the system clock. For clock_gettime, clock_getres can be used to find out the resolution of a clock.. On the other hand, the calling gettimeofday and clock_gettime themselves have cost

How to use gettimeofday function in C language

Den code im Grunde zeichnet die änderungen in die zugrunde liegende Zeit, halten Sie eine zu zählen, wie viele Anrufe es dauerte, bis gettimeofday() für die Zeit, um tatsächlich zu ändern. Dies ist auf meinem neuen i7-grunter laptop also es ist nicht kurz auf Rechenleistung (die Anzahl gibt an, wie oft es in der Lage war, zu rufen gettimeofday() für jede time quantum, aound die 5.000 mark) Don't use it. If the time in seconds suffices, time(2) can be used; gettimeofday(2) gives microseconds; clock_gettime(2) gives nanoseconds but is not as widely available. Further is the gettimeofday() also obsolete as of POSIX.1-2008, leaving only the clock_gettime() alternative, which is not as widely available. Most notably not present in Windows, as indicated in Porting clock_gettime to.

gettimeofday() should never be used to measure tim

  1. The gettimeofday() function gets and the settimeofday() function sets the system's notion of the current time. The current time is expressed in elapsed seconds and microseconds since 00:00 Universal Coordinated Time, January 1, 1970. The resolution of the system clock is hardware dependent; the time may be updated continuously or in clock ticks. The tp argument points to a timeval structure.
  2. gettimeofday () still useless across a deep sleep. This was raised before but I see no change. I save gettimeofday () befoer a deep sleep (5s in my test) and then subtract it from gettimeofday after the wakeup. The result goes wild very soon, often over 15s and even negative at times. Does the API provide a time that is monotonic, regular (even.
  3. The time zone to use. The only value implementations must recognize is UTC; the default is the runtime's default time zone. Implementations may also recognize the time zone names of the IANA time zone database, such as Asia/Shanghai, Asia/Kolkata, America/New_York. hour12 Whether to use 12-hour time (as opposed to 24-hour time)
  4. 2021-09-08T03:50:180-7:00. * 1 tick = 0.0001 milliseconds = 100 nanoseconds. Genesis & History. This site provides the current time in milliseconds elapsed since the UNIX epoch (Jan 1, 1970) as well as in other common formats including local / UTC time comparisons
  5. Wollen sie die Laufzeit eines Programms genau ermitteln, reichen die bisher kennengelernten Funktionen, die auf die Sekunde genau ermitteln, nicht aus. Sie benötigen eine genauere Zeitangabe. Hierfür haben sie mehrere Möglichkeiten. Möglichkeit 1 : Die Funktion clock () die in der Headerdatei <time.h> ist, und somit auf jedem System.
  6. The prototype for do_gettimeofday is: #include <linux/time.h> void do_gettimeofday(struct timeval *tv); The source states that do_gettimeofday has near microsecond resolution for many architectures. The precision does vary from one architecture to another, however, and can be less in older kernels. The current time is also available (though with less precision) from the xtime variable (a.
  7. The adjtime() function gradually adjusts the system clock (as returned by gettimeofday(2)). The amount of time by which the clock is to be adjusted is specified in the structure pointed to by delta. This structure has the following form: struct timeval { time_t tv_sec; /* seconds */ suseconds_t tv_usec; /* microseconds */ }; If the adjustment in delta is positive, then the system clock is.

Zeitfunktionen in C+

  1. GETTIMEOFDAY (2) BSD System Calls Manual GETTIMEOFDAY (2) NAME gettimeofday, settimeofday -- get/set date and time SYNOPSIS #include <sys/time.h> int gettimeofday( struct timeval *restrict tp, void *restrict tzp ); int settimeofday( const struct timeval *tp, const struct timezone *tzp ); DESCRIPTION Note: timezone is no longer used; this.
  2. Definition and Usage. The gettimeofday() function returns the current time
  3. std:: get_time. std:: get_time. When used in an expression in >> get_time(tmb, fmt), parses the character input as a date/time value according to format string fmt according to the std::time_get facet of the locale currently imbued in the input stream in. The resultant value is stored in a std::tm object pointed to by tmb

The functions gettimeofday () and settimeofday () can get and set the time as well as a timezone. The tv argument is a struct timeval (as specified in <sys/time.h>. and gives the number of seconds and microseconds since the Epoch (see time(2) ). The tz argument is a struct timezone: If either tv or tz is NULL, the corresponding structure is not. For example, if the time zone is Europe/London and the time stamp argument to mktime is circa 1970, mktime can set the global variables to values appropriate for a location that is at UTC+1 year round, which is what London was observing back in 1970; whereas if the time stamp is circa 2014, mktime can set the global variables to values. Mirror of GNU Emacs. Contribute to emacs-mirror/emacs development by creating an account on GitHub SVr4, 4.3BSD. POSIX.1-2001 describes gettimeofday() but not settimeofday(). POSIX.1-2008 marks gettimeofday() as obsolete, recommending the use of clock_gettime(2) instead. NOTES The time returned by gettimeofday() is affected by discontinuous jumps in the system time (e.g., if the system administrator manually changes the system time)

Esta es una interfaz a gettimeofday(2). Devuelve una matriz asociativa que contiene la información devuelta por la llamada al sistema. Parámetros. return_float . Cuando se establece a true, se devuelve un float en vez de un array. Valores devueltos. Por defecto se devuelve un array. Si return_float está establecido, se devuelve un float. Claves de la matriz: sec - segundos desde la Época. The new patch, issue9079.diff exposes gettimeofday as time.gettimeofday() returning (sec, usec) pair. msg108599 - Author: Alexander Belopolsky (belopolsky) * Date: 2010-06-25 14:09; Mark, I am reassigning this to you for commit review. I am changing the title to reflect the visible part of the change. The datetime module gains direct access to system gettimeofday at the C level while time. int __cdecl mingw_gettimeofday (struct timeval *p, struct timezone *z) If you would like to refer to this comment somewhere else in this project, copy and paste the following link: Kai Tietz - 2008-01-2 Calling gettimeofday() or clock_gettime() is pretty straightforward - see the accompanying clocks.c source file for examples. Java. Java has only two methods that are relevant to this discussion: System.currentTimeMillis() returns the current wall-clock time as the number of milliseconds since the epoch. It calls gettimeofday(), which in turn. gettimeofday (4) millisekunden messen gettimeofday zählen laufzeit clock zeitmessung timer time_t tim

gettimeofday(2) - physnet

The PHP gettimeofday() function returns current time. It returns an associative array containing the data returned from the system call. Syntax. gettimeofday(as_float) Parameters. as_float: Optional. When set to true, a float instead of an array is returned. Default is false. Return Value. By default returns an array. If as_float is set, then a float is returned. Array keys are: sec - seconds. Since gettimeofday() returns time in microseconds, the natural limit of its resolution is 1000 ns, and it is indeed achieved. If we call this function many times and print the differences between consecutive values, we get many zeroes and occasional ones. The same test for clock_gettime (CLOCK_REALTIME) returns 30 ns - exactly the same as the execution time of each call, which is expected. I (capital i) - Whether the date is in daylights savings time (1 if Daylight Savings Time, 0 otherwise) O - Difference to Greenwich time (GMT) in hours (Example: +0100) P - Difference to Greenwich time (GMT) in hours:minutes (added in PHP 5.1.3) T - Timezone abbreviations (Examples: EST, MDT) Z - Timezone offset in seconds. The offset for.

The gettimeofday() Function C For Dummies Blo

difference->tv_sec =end_time->tv_sec -start_time->tv_sec ; If end is earlier the start and tv_sec is unsigned then the result will be huge and incorrect, yet not in the jims code. Like I said it is bullet proof and coded that way for a reason. I had not considered the situation where earlier was actually later If non-NULL, the specified structure is filled with the current time of day. tz Under BSD, if this parameter is non-NULL, the current timezone is stored in the provided structure. However, under MOSS, this paramter is not supported; if the application passes a non-NULL paramter, the gettimeofday call will fail. RETURN VALU time and gettimeofday. Posted by richard_damon on December 1, 2010. xTickCount is the variable that holds the number of ticks that have passed. The 'proper' way to get that value is calling xTaskGetTickCount () There is also a variable xNumOfOverflows which counts the number of times xTickCount has overflowed. There isn't a function. I have a question regarding gettimeofday () function on Linux. I wrote a simple benchmark to understand the execution time of gettimeofday () function. I used ACE High Resolution Timer library to measure the timings (which in fact uses rdtsc instruction). My measurements claim that it takes 1.7 usecs as median and 1.8 usecs as mean value time = 1396927460.707331 time = 1396927491.641229 Number of Calls = 1000000000. This means around 30 seconds for 1000000000 calls, i.e., the overhead of gettimeofday() is around 30ns. My question is: Is this small program correctly measuring the overhead of gettimeofday() ? Is it possible that the function was cached so that it's retrieval.

Pastebin.com is the number one paste tool since 2002. Pastebin is a website where you can store text online for a set period of time Times() has in the best case a 1 ms resolution. Best case for gettimeofday() is a 1 us resolution. In the very worst case gettimeofday() has the same resolution as times(). So for me the choice is easy. But gettimeofday() can be slower than necessary for your usage case because it wants to stay correct. It can use slower clock sources and do. The esp products use the standard POSIX time library functions. time (), gmtime (), localtime (), mktime (), gettimeofday () etc. You can google them to see how they work. (they haven't changed in decades) To get the broken down into elements you pass a pointer to a time_t to localtime () that fills in the tm structure I want to take current time with milli seconds in C. Does it have any header file to include to produce time in milli seconds. Please mail me if any of u know. Thank you. You may try the gettimeofday function. It reports the time down to microsecond level. The function is included via <sys/time.h>

Time_t milliseconds,

When performing the conversion, the ConvertTimeFromUtc method applies any adjustment rules in effect in the destinationTimeZone time zone. The precise behavior of this method depends on the value of the Kind property of the dateTime parameter, as the following table shows. Remarks. DateTime.Kind property 3.4.2 Laufzeit-Messung. mit den bisher bekannten Mitteln kann die Zeit auf eine Sekunde genau ermittelt werden soll z.B. die Laufzeitzeit eines Programmes ermittelt werden, reicht diese Genauigkeit nicht au Time taken by program is : 0.000001 sec. using gettimeofday () function in C & C++. gettimeofday () : The function gettimeofday () can get the time as well as timezone. Header File : sys/time.h. Prototype / Syntax : int gettimeofday (struct timeval *tv, struct timezone *tz); The tv argument is a struct timeval and gives the number of. Warning: That file was not part of the compilation database. It may have many parsing errors. Generated on 2019-Mar-30 from project glibc revision glibc-2.29.9000-166-g656dd306d4 Powered by Code Browser 2.1 Generator usage only permitted with license. Code Browser 2.1 Generator usage only permitted with license

timezone issue with gettimeofday and localtime. Message ID: 20101002122511.20457.qmail@lists-nntp.develooper.com. Hi all, I am having some trouble with time functions in Perl that correct their reading for the appropriate timezone. I have minimized my problem into the example script at the bottom of this message, where: 1 gettimeofday, settimeofday - get / set time. #include <sys/time.h> int gettimeofday (struct timeval *tv, struct timezone *tz); int settimeofday (const struct timeval *tv, const struct timezone *tz); The functions gettimeofday () and settimeofday () can get and set the time as well as a timezone. The tv argument is a struct timeval (as.

一秒找出用时间和随机数生成的上传文件名 - FreeBuf网络安全行业门户

System Time - ESP32 - — ESP-IDF Programming Guide latest

NOTES The time returned by gettimeofday () is affected by discontinuous jumps in the system time (e.g., if the system administrator manually changes the system time). If you need a monotonically increasing clock, see clock_gettime (2) . Macros for operating on timeval structures are described in timer- add (3) Granularity. Obviously do_gettimeofday () and getnstimeofday () have a better granularity, as current_kernel_time () will only have the precison in jiffy (which could be 10ms on a regular 100HZ kernel), while getnstimeofday () has better precision than do_gettimeofday (). I have done the test through the following pseudo code Google. Protobuf. WellKnownTypes. Timestamp. A Timestamp represents a point in time independent of any time zone or calendar, represented as seconds and fractions of seconds at nanosecond resolution in UTC Epoch time.. Summary. It is encoded using the Proleptic Gregorian Calendar which extends the Gregorian calendar backwards to year one

PHP 的 uniqid 函数产生的 id 真的是唯一的么?-PHP问题-PHP中文网磁盘测速 | 呆鸥Measuring OS X Meltdown Patches Performance

gettimeofday(2): get/set time - Linux man pag

Available Types¶ class datetime.date. An idealized naive date, assuming the current Gregorian calendar always was, and always will be, in effect. Attributes: year, month, and day. class datetime.time. An idealized time, independent of any particular day, assuming that every day has exactly 24*60*60 seconds Using gettimeofday () To Measure Performance. Sep 15, 2011 at 4:31pm. aerowenn (44) This might not be the most optimal way, I'm sure there is a better way, but at least for what I'm doing I need to use the function gettimeofday () to measure execution time of a small section of code. I've read the manual, and all other documentation that I can. gettimeofday( ) - get the time since the Epoch (POSIX) settimeofday( ) - sets the time since Epoch (not POSIX) DESCRIPTION. This library provides a clock interface, as defined in the IEEE standard, POSIX 1003.1b. A clock is a software construct that keeps time in seconds and nanoseconds. The clock has a simple interface with three routines: clock_settime( ), clock_gettime( ), and clock_getres. PostgreSQL Source Code: src/port/gettimeofday.c File Reference. PostgreSQL Source Code. #include c.h . #include < sys/time.h >. Include dependency graph for gettimeofday.c: Go to the source code of this file

gettimeofday implementaiton for windows · GitHu

Atomic Time - or TAI, International Atomic Time scale. This time scale uses the specific definition of a second: 9,192,631,770 cycles between two hyperfine levels of the ground state of cesium 133. Universal Time - or UT is counted from 0 hours at midnight, with the unit of duration the mean solar day. There are 2 subdivision of UT Get the current calendar time as a value of type time_t. The function returns this value, and if the argument is not a null pointer, it also sets this value to the object pointed by timer. The value returned generally represents the number of seconds since 00:00 hours, Jan 1, 1970 UTC (i.e., the current unix timestamp).Although libraries may use a different representation of time: Portable.

How to get current time in milliseconds in various

Wie verwende ich die gettimeofday-Funktion in der Sprache

ich möchte gerne die Funktion gettimeofday anwenden. Ich habe die Includedatei #include <sys/time.h> eingefügt, bekomme aber den Fehler: Ich habe die Includedatei #include <sys/time.h> eingefügt, bekomme aber den Fehler About time.Time. First off, it's useful to understand just how time is embodied in Go. The time.Time struct can represent instants in time with nanosecond-precision. In order to more reliably measure elapsed time for comparisons, additions and subtractions, time.Time may also contain an optional, nanosecond-precision reading of the current process' monotonic clock. This is to avoid. Here we will see how to get time (the elapsed time for the program or any other kind of time). Here we are using linux library for C++. There is a structure called timeval. This timeval stores the time in seconds, milliseconds. We can create two time for start and end, then find the difference from them

gettimeofday() - Unix, Linux System Cal

/* Get the current time of day and timezone information, 22: putting it into *TV and *TZ. If TZ is NULL, *TZ is not filled. 23: Returns 0 on success, -1 on errors. */ 24: int: 25: __gettimeofday (struct timeval *tv, struct timezone *tz) 26 {27 __set_errno ; 28: return-1; 29} 30: libc_hidden_def (__gettimeofday) 31: weak_alias (__gettimeofday, gettimeofday) 32: libc_hidden_weak (gettimeofday. Calculate time in microseconds or nanoseconds. In Java the following loop calculates me the results in nanoseconds and with the addition of /1000 therefore in microseconds. Here the incomplete programm. The important part is the loop of 39 and two values which will be printed out. There are some examples in the internet unfortunately it returns.

Check our new training course. and Creative Commons CC-BY-SA. lecture and lab material Mit gettimeofday bekommen wir aber was wir wollen (?) #include <iostream> #include <ctime> #include <unistd.h> #include <sys/time.h> int main() { timeval a; timeval b; gettimeofday(&a, 0); sleep(5); // sleep 5s gettimeofday(&b, 0); std::cout << difference: << (b.tv_sec - a.tv_sec) << std::endl; return 0; } Ausgaben auf meinem System $ difference: 5 Wenn Sie mehr Präzision benötigen, aber. POSIX.1-2008 marks gettimeofday () as obsolete, recommending the use of clock_gettime (2) instead. NOTES The time returned by gettimeofday () is affected by discontinuous jumps in the system time (e.g., if the system administrator manually changes the system time). If you need a monotonically increasing clock, see clock_gettime (2) AlmaLinux AppStream aarch64 Official perl-Time-HiRes-1.9760-439.module_el8.4.0+2367+01326e37.aarch64.rpm: High resolution alarm, sleep, gettimeofday, interval timer The resolution of the system clock is hardware dependent, and the time may be updated continuously or in ``ticks.''. If tp is NULL and tzp is non-NULL, gettimeofday () will populate the timezone struct in tzp. If tp is non-NULL and tzp is NULL, then only the timeval struct in tp is populated. If both tp and tzp are NULL, nothing is returned