:maxproc-cur=256:\ :openfiles-cur=256:\ ... (-cur is the soft limit. Append -max to set the hard limit.) Kernels can also have system-wide limits on some resources. • On Linux /proc/sys/fs/file-max determines need. 1. http://lwn.net/Articles/104179/ 435 Chapter 17. Server Setup and Operation Older Linux kernels do not offer /proc/self/oom_score_adj, but may have a previous version of the same functionality The corresponding build flag for PostgreSQL is -DLINUX_OOM_ADJ=0. Note: Some vendors’ Linux 2.4 kernels are reported to have early versions of the 2.6 overcommit sysctl parameter. However, setting vm.overcommit_memory

:maxproc-cur=256:\ :openfiles-cur=256:\ ... (-cur is the soft limit. Append -max to set the hard limit.) Kernels can also have system-wide limits on some resources. • On Linux /proc/sys/fs/file-max determines oom_score_adj value of zero, so that the OOM killer can still target them at need. Older Linux kernels do not offer /proc/self/oom_score_adj, but may have a previous version of the same functionality The corresponding build flag for PostgreSQL is -DLINUX_OOM_ADJ=0. Note: Some vendors’ Linux 2.4 kernels are reported to have early versions of the 2.6 overcommit sysctl parameter. However, setting vm.overcommit_memory

:maxproc-cur=256:\ :openfiles-cur=256:\ ... (-cur is the soft limit. Append -max to set the hard limit.) Kernels can also have system-wide limits on some resources. • On Linux /proc/sys/fs/file-max determines oom_score_adj value of zero, so that the OOM killer can still target them at need. Older Linux kernels do not offer /proc/self/oom_score_adj, but may have a previous version of the same functionality The corresponding build flag for PostgreSQL is -DLINUX_OOM_ADJ=0. Note: Some vendors’ Linux 2.4 kernels are reported to have early versions of the 2.6 overcommit sysctl parameter. However, setting vm.overcommit_memory

:maxproc-cur=256:\ :openfiles-cur=256:\ ... (-cur is the soft limit. Append -max to set the hard limit.) Kernels can also have system-wide limits on some resources. • On Linux /proc/sys/fs/file-max determines oom_score_adj value of zero, so that the OOM killer can still target them at need. Older Linux kernels do not offer /proc/self/oom_score_adj, but may have a previous version of the same functionality The corresponding build flag for PostgreSQL is -DLINUX_OOM_ADJ=0. Note: Some vendors’ Linux 2.4 kernels are reported to have early versions of the 2.6 overcommit sysctl parameter. However, setting vm.overcommit_memory

:maxproc-cur=256:\ :openfiles-cur=256:\ ... (-cur is the soft limit. Append -max to set the hard limit.) Kernels can also have system-wide limits on some resources. • On Linux /proc/sys/fs/file-max determines net/Articles/104179/ 401 Chapter 17. Server Setup and Operation Note: Some vendors’ Linux 2.4 kernels are reported to have early versions of the 2.6 overcommit sysctl parameter. However, setting vm.overcommit_memory IPv4-in-IPv6 addresses (Tom Lane) This hack was added in 2003 in response to a report that some Linux kernels of the time would report IPv4 connections as having IPv4-in-IPv6 addresses. However, the logic was

:maxproc-cur=256:\ :openfiles-cur=256:\ ... (-cur is the soft limit. Append -max to set the hard limit.) Kernels can also have system-wide limits on some resources. • On Linux /proc/sys/fs/file-max determines value of zero, so that the OOM killer can still target them at need. Note: Some vendors’ Linux 2.4 kernels are reported to have early versions of the 2.6 overcommit sysctl parameter. However, setting vm.overcommit_memory IPv4-in-IPv6 addresses (Tom Lane) This hack was added in 2003 in response to a report that some Linux kernels of the time would report IPv4 connections as having IPv4-in-IPv6 addresses. However, the logic was

:maxproc-cur=256:\ :openfiles-cur=256:\ ... (-cur is the soft limit. Append -max to set the hard limit.) Kernels can also have system-wide limits on some resources. • On Linux /proc/sys/fs/file-max determines value of zero, so that the OOM killer can still target them at need. Note: Some vendors’ Linux 2.4 kernels are reported to have early versions of the 2.6 overcommit sysctl parameter. However, setting vm.overcommit_memory IPv4-in-IPv6 addresses (Tom Lane) This hack was added in 2003 in response to a report that some Linux kernels of the time would report IPv4 connections as having IPv4-in-IPv6 addresses. However, the logic was

:maxproc-cur=256:\ :openfiles-cur=256:\ ... (-cur is the soft limit. Append -max to set the hard limit.) Kernels can also have system-wide limits on some resources. • On Linux /proc/sys/fs/file-max determines value of zero, so that the OOM killer can still target them at need. Note: Some vendors’ Linux 2.4 kernels are reported to have early versions of the 2.6 overcommit sysctl parameter. However, setting vm.overcommit_memory IPv4-in-IPv6 addresses (Tom Lane) This hack was added in 2003 in response to a report that some Linux kernels of the time would report IPv4 connections as having IPv4-in-IPv6 addresses. However, the logic was

:maxproc-cur=256:\ :openfiles-cur=256:\ ... (-cur is the soft limit. Append -max to set the hard limit.) Kernels can also have system-wide limits on some resources. • On Linux /proc/sys/fs/file-max determines see the kernel documentation file Documentation/vm/overcommit-accounting. Some vendors’ Linux 2.4 kernels are reported to have early versions of the 2.6 overcommit sysctl parameter. However, setting vm.overcommit_memory EINVAL for an existing shared memory segment (Tom) This behavior has been observed on BSD-derived kernels including OS X. It resulted in an entirely- misleading startup failure complaining that the shared

:maxproc-cur=256:\ :openfiles-cur=256:\ ... (-cur is the soft limit. Append -max to set the hard limit.) Kernels can also have system-wide limits on some resources. • On Linux /proc/sys/fs/file-max determines see the kernel documentation file Documentation/vm/overcommit-accounting. Some vendors’ Linux 2.4 kernels are reported to have early versions of the 2.6 overcommit sysctl parameter. However, setting vm.overcommit_memory EINVAL for an existing shared memory segment (Tom) This behavior has been observed on BSD-derived kernels including OS X. It resulted in an entirely- misleading startup failure complaining that the shared