![utime crash utime crash](https://www.ladyblitz.it/wp-content/uploads/2017/07/daniele_battaglia.q%C3%B2JPG-369x450.jpg)
He added that moving forward, he hopes to see UTime transition into a more general scheduling app that allows users to add events outside of class as well. After coming to Penn, Diamond worked on and off for four to five months to transform iStaples into UTime.Ĭollege sophomore Alex Evans is one of UTime's new users, and said he already finds it “preferable” and “easier to use” than Penn InTouch. As a junior in Staples High School in Westport, Conn., Diamond launched iStaples - an app that similarly helped students organize and see their class schedules. UTime isn't the first app that the sophomore has launched. According to Diamond, the app had 200 downloads in the first two days of its launch. adb -k /dev/ksyms /dev/mem physmem 1e16 time/D time: time: 763593169 lbolt/D lbolt: lbolt: 676067 0t763593169-0t6760=Y 1994 Mar 13 19:20:09 $q Hiya.The app was beta tested last year at the end of the second semester and was launched at the beginning of this semester. We can easily do the division by 100 in our head by simply dropping the last two digits from lbolt.
![utime crash utime crash](https://i.ytimg.com/vi/mFlNZfsTj5k/maxresdefault.jpg)
We will perform the same operation again, this time using all decimal values. When calculating the boot time, you might find it easier to work in decimal. The =Y says to show the result of the formula in date format. Instead of 0t100 we could have simply put 64, as 100 decimal is 64 hexadecimal. The 0t specifies that the next value is in decimal instead of the adb default base, hexadecimal. Figure 9-4 Displaying the boot time and crash time on a Solaris 2 crash Hiya. Within adb we can do this simple arithmetic and ask adb to display the result in time format. To get the boot time on a Solaris 2 system, we have to get the lbolt value, divide it by 100 to get whole seconds, and subtract that value from the current or crash time.
![utime crash utime crash](https://steamcdn-a.akamaihd.net/steam/apps/11390/ss_d0f58114a47b681481ac01ac4d989508248cc923.1920x1080.jpg)
This value is kept in a kernel variable called lbolt, which is an abbreviation for "lightning bolts," or clock ticks. Instead, it keeps track of the 100ths of seconds that have passed since the system was booted. Solaris 2 also has a time variable but doesn't keep track of the boot time as a fixed value, as is done in Solaris 1. Figure 9-3 Displaying the boot time and crash time on a Solaris 1 crash Hiya. As you may recall from the previous chapter, in adb the /Y command says to show the 32-bit value stored in the specified variable as a date instead of, say, a hexadecimal value. UNIX time is maintained as the number of seconds since January 1, 1970. These are conveniently stored in kernel variables boottime and time. Looking first at a Solaris 1 system, let's get the boot time and the time of the system crash. A system that, according to the savecore files, was up for several months presents a different picture than a system that was up for merely a few minutes. Subtracting the crash time from the boot time gives the system uptime. In such cases, often a specific cron job turns out to be the program that is triggering the crashes.Ĭomparing the boot time to the current or crash time also provides useful information.
![utime crash utime crash](http://cdn.akamai.steamstatic.com/steam/apps/11390/ss_e3d75d7fd261c71c35a850ea8df9f85b00477117.1920x1080.jpg)
For example, if you find you have several crashes from one system that all occurred at the same time but on different days, you are much closer to finding the source. The time of the crash can play a vital role in system crash dump analysis. In postmortem system crash dump files, the current time is actually the time of the crash. The current time is usually easy to find, but sometimes the boot time is a bit trickier. UNIX systems keep track of the current time as well as the time when they were booted.