The system call you’re looking for is sysinfo(). It’s defined in sys/sysinfo.h Its signature is: int sysinfo(struct sysinfo *info) Since kernel 2.4, the structure has looked like this: struct sysinfo { long uptime; /* Seconds since boot */ unsigned long loads[3]; /* 1, 5, and 15 minute load averages */ unsigned long totalram; /* Total … Read more
You could setup a second Heroku app which points to the same DB as your primary production app and use the secondary app to run your DB migrations without interrupting production (assuming the migrations don’t break the previous version of your app). Let’s call the Heroku apps PRODUCTION and STAGING. Your deploy sequence would become … Read more
By using psutil https://github.com/giampaolo/psutil: >>> import psutil, os, time >>> p = psutil.Process(os.getpid()) >>> p.create_time() 1293678383.0799999 >>> time.strftime(“%Y-%m-%d %H:%M:%S”, time.localtime(p.create_time())) ‘2010-12-30 04:06:23′ >>> …plus it’s cross platform, not only Linux. NB: I am one of the authors of this project.
htop adds an exclamation mark if the uptime is greater than 100 days. From: https://github.com/hishamhm/htop/blob/0e8a02367ec7ca8f52b10de70938dfd07faed3ab/UptimeMeter.c#L41
I think I worked it out. time() carries on incrementing while the device is asleep, but of course can be manipulated by the operating system or user. However, the Kernel boottime (a timestamp of when the system last booted) also changes when the system clock is changed, therefore even though both these values are not … Read more
I have found this article on the subject: http://www.tenereillo.com/GSLBPageOfShame.htm Basically if you do not require long lasting sticky sessions you can configure your DNS servers to return multiple A records (IP addresses) for your website. Web browsers are smart enough to try all the addresses until they find one that works.
public TimeSpan UpTime { get { using (var uptime = new PerformanceCounter(“System”, “System Up Time”)) { uptime.NextValue(); //Call this an extra time before reading its value return TimeSpan.FromSeconds(uptime.NextValue()); } } }
The reliability figure wasn’t supposed to measure the total time any part of AXD301 (project in question) was ever shut down for over 20 years. It represents the total time over those 20 years that the service provided by the AXD301 system was ever offline. Subtle difference. As Joe Armstrong says here: The AXD301 has … Read more