Accept Error 0x18 Too Many Open Files On Fd
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is comprised started displaying, from time to time, a “Too many too many open files in system linux open files” exception. This was one of the hardest bug
Socket: Too Many Open Files (24) Ab
we’ve had to face to date, getting us to the point of pulling out
Socket: Too Many Open Files Golang
our hair. Today, were sharing how we fixed it so that you can avoid pulling out yours. Close opened resources The go to solution when
Socket Too Many Open Files (24) Mac
you start getting this kind of exceptions is to look for resources like files, sockets, etc that weren’t properly closed. In our code, we follow the golden rule of closing whatever we open, but still, there we’re some details of our Scala + PlayFramework stack, that we were unaware socket too many open files (24) apache benchmark that caused leaking of resources. Source.fromFile Although the scala.io.Source.fromFile method is often used in oneliners and seductive to use in a functional style, it does not close the file opened unless you do it explicitly. val source = scala.io.Source.fromFile("file.txt") val lines = try { source.mkString } finally { source.close() } play-ws This is another sneaky one. If you're using play-ws outside a play application, and you're creating an instance of NingWSClient and casting it to WSClient, you'll care about this case. Previous to version 2.4, the WSClient interface didn’t exposed a close method, so one would assume that it is managed automatically. Wrong, the file descriptor was left open. To close it you should cast the client to NingWSClient as: wsClient.underlying[NingWSClient].close() In newer versions than 2.4, the method is exposed in the WSClient interf
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08.06 09.06 10.06 11.06 12.06 01.07 02.07 03.07 04.07 05.07 06.07 08.07 09.07 10.07 11.07 12.07 01.08 02.08 03.08 04.08 05.08 06.08 07.08 08.08 09.08 10.08 11.08 12.08 01.09 02.09 03.09 04.09 05.09 06.09 07.09 08.09 09.09 10.09 11.09 12.09 http://technopark02.blogspot.com/2005_05_01_archive.html 01.10 02.10 03.10 04.10 05.10 06.10 07.10 08.10 09.10 10.10 11.10 12.10 01.11 02.11 03.11 04.11 05.11 07.11 08.11 09.11 10.11 11.11 12.11 01.12 02.12 03.12 04.12 05.12 06.12 07.12 08.12 09.12 10.12 11.12 12.12 01.13 02.13 03.13 04.13 http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/troubleshooting/guide/N5K_Troubleshooting_Guide/n5K_ts_sans.html 05.13 06.13 07.13 08.13 09.13 10.13 11.13 12.13 01.14 02.14 03.14 04.14 05.14 06.14 07.14 09.14 10.14 11.14 12.14 01.15 02.15 03.15 04.15 06.15 09.15 12.15 01.16 03.16 04.16 05.16 06.16 07.16 08.16 Thursday, May 26, 2005 Solaris: too many 32-bits , fopen() and max number of open files Last friday I was assigned to look into an issue where the application is not able write into files, once it is up for more than one week. It is a 32-bit application running on Solaris (SPARC platform) and the error message says, too many open files. With little effort, we came to know that all those errors are due to the calls to fopen(), from the application.A little background too many open on stdio's fopen():fopen() is part of stdio API. For a 32-bit application, a stdio library FILE structure represents the underlying file descriptor as an unsigned char (8 bits), limiting the range of file descriptors which can be opened as FILE's to 0-255 inclusive.A common known problem (perhaps a "fact") is that when the 32-bit stdio is used in large applications on Solaris, the 255 limit for the number of open files, is frequently reached. File descriptors are allocated by the operating system starting at 0, and are then allocated in numerical order. Descriptors 0, 1, and 2 are opened for every process as stdin, stdout and stderr at startup.open() system call can also be used to open files from a C program. Both open and fopen use file descriptors which are taken from the total number of file descriptors allowed by the environment. Also the system allocates descriptors from the same pool of file descriptors, for calls to popen(), socket(), accept() and any other system call that returns a descriptor. That is, the same pool of file descriptors will be shared by various system calls like fopen, open, popen, accept, socket. So, if the application has numerous calls to these functions, and assuming if they are not closed immediately, it is very likely that a call to fopen may fail even before it reaches the 253 (266 - 3 = 253) file descriptors,
Nexus 5000 Series SwitchesTroubleshoot and AlertsTroubleshooting Guides Cisco Nexus 5000 Troubleshooting Guide Book Contents Book Contents Index Preface Troubleshooting Overview Troubleshooting FCoE Issues Troubleshooting Layer 2 Switching Issues Troubleshooting QoS Issues Troubleshooting SAN Switching Issues Troubleshooting Security Issues Troubleshooting System Management Issues Troubleshooting Virtual Port Channel Issues Troubleshooting Config-Sync Issues Download Download Options Book Title Cisco Nexus 5000 Troubleshooting Guide Chapter Title Troubleshooting SAN Switching Issues PDF - Complete Book (1.77 MB) PDF - This Chapter (492.0 KB) View with Adobe Reader on a variety of devices ePub - Complete Book (225.0 KB) View in various apps on iPhone, iPad, Android, Sony Reader, or Windows Phone Mobi - Complete Book (405.0 KB) View on Kindle device or Kindle app on multiple devices Print Results Updated: Sep 19, 2016 Chapter: Troubleshooting SAN Switching Issues Chapter Contents Overview General SAN troubleshooting steps NPV NP Uplink ports on NPV edge switch are stuck in initializing state Server interface does not come up and “NPV upstream port not available” message appears Uneven load balancing on the NPV NP ports Server on downstream NPV edge switch does not login to the fabric Locating exact port that server is physically attached to VSANs stuck in initializing state after configuring the 4.2(1)N1 F_Port trunking feature Zoning Cannot activate zoneset and cannot configure zoning in enhanced zoning mode Host cannot communicate with storage Zone merge failure when two switches connect using E or TE port Zone set activation failure Full zone database synchronization failure across two switches Mismatched default zone policy in switches in VSAN causes unexpected results when accessing storage SAN Port Channels Fibre channel port is down when trying to connect switches via SAN Port Channel Newly added Fibre Channel interface does not come online in a SAN Port Channel Cannot configure trunking VSAN traffic does not traverse trunk xE port is isolated in a specific VSAN under interface of SAN Port Channel Cannot create a san-port-channel interface FC Services Overview Fibre channel port remains in initializing state Specific VSAN traffic is not being routed through SAN fabric Fibre channel port is suspended due to too many invalid FLOGIs Having stale FCNS entries for Fibre Channel node