Re: [WebDNA] sem_open solved
This WebDNA talk-list message is from 2012
It keeps the original formatting.
numero = 108304
interpreted = N
texte = Thanks Chris, way better explanation....... but if it crashes in a week, it "may" not be ram... its all new... ;-) On Jan 26, 2012, at 3:16 PM, christophe.billiottet@webdna.us wrote: > I will reply for Rob: > > This is a Mac OSX server with 6.2 and we had two applications crashing randomly: WebDNA and applevncserver. The server had been up for 210 days, and during that time either a semaphore leak has used up all available semaphores, or bad ram has caused the memory to become corrupted and the server to lose track of how many semaphores are available and in use. So it could be the lack of semaphores is causing both applications to not be able to acquire locks and they are corrupting themselves and crashing. > > A reboot was the first solution, and it seems it fixed the problem. The version of 6.2 will not create anymore semaphore with identical names and hopefully the problem should not reappear. However, if the server crashes again within a week, then the problem is most likely a bad RAM chip. > > - chris > > > On Jan 26, 2012, at 18:58, Govinda wrote: > >> >>> I'd like to personally thank Chris and Josh for all their help on this one, and Thierry for his part in getting it going and splitting the costs of the executable. >>> >>> Just for anyones info, it was a 2 (maybe 3) part problem. >>> >>> 1) The executable itself >>> 2) The fact that you have to restart a server after 210 days(who knew... it's a server...sheeesh... lol ) >>> 3) Maybe bad ram contributing to it, but thats a wait and see moment. >>> >>> Prior servers to this have run for over a year without restart, but I understand the reasoning for this, as everything related to semaphores was all heaped up. Sometimes you get so wrapped up in this crap, you don't think of things like that, especially when everything else seems to run fine. >>> >>> Anyway, its fixed, and thank you to everyone for their input and help. >> >> Rob >> >> Sorry if I am being foggy.. but I did not understand very well.. and am curious. So say again, what exactly was causing your crashes? And you solved it? How exactly? ...primarily by paying WSC for a new version of 6.x , minus the semaphore bug? >> >> -Govinda >> >> >> --------------------------------------------------------- >> This message is sent to you because you are subscribed to >> the mailing list
. >> To unsubscribe, E-mail to: >> archives: http://mail.webdna.us/list/talk@webdna.us >> Bug Reporting: support@webdna.us > > --------------------------------------------------------- > This message is sent to you because you are subscribed to > the mailing list . > To unsubscribe, E-mail to: > archives: http://mail.webdna.us/list/talk@webdna.us > Bug Reporting: support@webdna.us
Associated Messages, from the most recent to the oldest:
Thanks Chris, way better explanation....... but if it crashes in a week, it "may" not be ram... its all new... ;-) On Jan 26, 2012, at 3:16 PM, christophe.billiottet@webdna.us wrote: > I will reply for Rob: > > This is a Mac OSX server with 6.2 and we had two applications crashing randomly: WebDNA and applevncserver. The server had been up for 210 days, and during that time either a semaphore leak has used up all available semaphores, or bad ram has caused the memory to become corrupted and the server to lose track of how many semaphores are available and in use. So it could be the lack of semaphores is causing both applications to not be able to acquire locks and they are corrupting themselves and crashing. > > A reboot was the first solution, and it seems it fixed the problem. The version of 6.2 will not create anymore semaphore with identical names and hopefully the problem should not reappear. However, if the server crashes again within a week, then the problem is most likely a bad RAM chip. > > - chris > > > On Jan 26, 2012, at 18:58, Govinda wrote: > >> >>> I'd like to personally thank Chris and Josh for all their help on this one, and Thierry for his part in getting it going and splitting the costs of the executable. >>> >>> Just for anyones info, it was a 2 (maybe 3) part problem. >>> >>> 1) The executable itself >>> 2) The fact that you have to restart a server after 210 days(who knew... it's a server...sheeesh... lol ) >>> 3) Maybe bad ram contributing to it, but thats a wait and see moment. >>> >>> Prior servers to this have run for over a year without restart, but I understand the reasoning for this, as everything related to semaphores was all heaped up. Sometimes you get so wrapped up in this crap, you don't think of things like that, especially when everything else seems to run fine. >>> >>> Anyway, its fixed, and thank you to everyone for their input and help. >> >> Rob >> >> Sorry if I am being foggy.. but I did not understand very well.. and am curious. So say again, what exactly was causing your crashes? And you solved it? How exactly? ...primarily by paying WSC for a new version of 6.x , minus the semaphore bug? >> >> -Govinda >> >> >> --------------------------------------------------------- >> This message is sent to you because you are subscribed to >> the mailing list . >> To unsubscribe, E-mail to: >> archives: http://mail.webdna.us/list/talk@webdna.us >> Bug Reporting: support@webdna.us > > --------------------------------------------------------- > This message is sent to you because you are subscribed to > the mailing list . > To unsubscribe, E-mail to: > archives: http://mail.webdna.us/list/talk@webdna.us > Bug Reporting: support@webdna.us
Rob
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