On 10/13/2016 01:53 AM, Deniz Eren wrote: > I'm using squid's SMP functionality to distribute requests to many > squid instances and distribute workload to multiple processors. > However while running squid's workers after a while worker processes > crash with the error below and coordinator does not start them again: > ... > FATAL: Ipc::Mem::Segment::open failed to > shm_open(/squid-cf__metadata.shm): (2) No such file or directory > Squid Cache (Version 3.5.20): Terminated abnormally. > ... Are you saying that this fatal shm_open() error happens after all workers have started serving/logging traffic? I would expect to see it at startup (first few minutes at the most if you have IPC timeout problems). Does the error always point to squid-cf__metadata.shm? Are you sure that there are no other fatal errors, segmentation faults, or similar deathly problems _before_ this error? Are you sure your startup script does not accidentally start multiple Squid instances that compete with each other? Check system error logs. FWIW, Segment::open errors without Segment::create errors are often a side-effect of other problems that either prevent Squid from creating segments or force Squid to remove created segments (both happen in the master process). > permissions are OK in /dev/shm Do you see any Squid segments there (with reasonable timestamps)? > Also is my way of using SMP functionality correct, since I want to > distribute all connections between workers and to listen only specific > ports? Adding "workers N" and avoiding SMP-incompatible features is the right way; I do not see any SMP-related problems in your configuration. Alex. _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users
