On Sun, Jun 29, 2008 at 05:13:59PM -0400, Bill Moran wrote: > Use the kdump utility to convert the ktrace.out file to something usable. > Something like "kdump > ktrace.txt" will probably get you what you want, > assuming your ktrace file is ktrace.out. ok. did it. in about 7 seconds, i got 250mb of ktrace.out. ktrace.txt is 176 megabytes. content of this is pretty simple: 58241 postgres CALL poll(0x7fffffffd4e0,0x1,0x7d0) 58241 postgres RET poll -1 errno 4 Interrupted system call 58241 postgres CALL poll(0x7fffffffd4e0,0x1,0x7d0) 58241 postgres RET poll -1 errno 4 Interrupted system call 58241 postgres CALL poll(0x7fffffffd4e0,0x1,0x7d0) 58241 postgres RET poll -1 errno 4 Interrupted system call 58241 postgres CALL poll(0x7fffffffd4e0,0x1,0x7d0) 58241 postgres RET poll -1 errno 4 Interrupted system call 58241 postgres CALL poll(0x7fffffffd4e0,0x1,0x7d0) 58241 postgres RET poll -1 errno 4 Interrupted system call 58241 postgres CALL poll(0x7fffffffd4e0,0x1,0x7d0) 58241 postgres RET poll -1 errno 4 Interrupted system call 58241 postgres CALL poll(0x7fffffffd4e0,0x1,0x7d0) should i make the ktrace.txt available, or should i do something else to help you ( i mean, the pg-hackers community) diagnose the issue? Best regards, depesz