{"id":19592243,"url":"https://github.com/catalyst/conntrack-table-memory","last_synced_at":"2025-04-27T14:33:38.123Z","repository":{"id":21908954,"uuid":"25233021","full_name":"catalyst/conntrack-table-memory","owner":"catalyst","description":"Given a particular memory size, examine the size of the nf_conntrack struct and determine how to set nf_conntrack_max appropriately","archived":false,"fork":false,"pushed_at":"2020-05-13T01:27:09.000Z","size":140,"stargazers_count":26,"open_issues_count":0,"forks_count":3,"subscribers_count":7,"default_branch":"master","last_synced_at":"2025-04-05T00:51:14.213Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":"","language":"Python","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"gpl-3.0","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/catalyst.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null}},"created_at":"2014-10-15T01:02:47.000Z","updated_at":"2024-06-12T04:30:22.000Z","dependencies_parsed_at":"2022-08-17T23:31:05.759Z","dependency_job_id":null,"html_url":"https://github.com/catalyst/conntrack-table-memory","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/catalyst%2Fconntrack-table-memory","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/catalyst%2Fconntrack-table-memory/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/catalyst%2Fconntrack-table-memory/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/catalyst%2Fconntrack-table-memory/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/catalyst","download_url":"https://codeload.github.com/catalyst/conntrack-table-memory/tar.gz/refs/heads/master","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":251154701,"owners_count":21544544,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":[],"created_at":"2024-11-11T08:34:17.178Z","updated_at":"2025-04-27T14:33:37.550Z","avatar_url":"https://github.com/catalyst.png","language":"Python","funding_links":[],"categories":[],"sub_categories":[],"readme":"conntrack_table_memory\n======================\n\nRequires: python \u003e= 2.7, libnetfilter-conntrack-dev\n\n    usage: conntrack_table_memory [-h] [--output {conntrack_max,hashsize}]\n                                  mebibytes\n\n    Given a particular memory size, examine the size of the nf_conntrack struct\n    and determine how to set nf_conntrack_max appropriately. Also outputs the\n    recommended hashsize parameter for the nf_conntrack module. Michael Fincham\n    \u003cmichael.fincham@catalyst.net.nz\u003e\n\n    positional arguments:\n      mebibytes             desired maximum kernel memory consumption in MiB\n\n    optional arguments:\n      -h, --help            show this help message and exit\n      --output {conntrack_max,hashsize}\n                            output just the requested value and nothing else\n\nExample\n-------\n\n    fincham:~/Working/sysadmin-tools/conntrack$ ./conntrack_table_memory 256\n    On this machine, each conntrack entry requires 328 bytes of kernel memory, and each hash table entry requires 16.\n\n    Therefore to consume a maximum of 256 MiB of kernel memory:\n     - conntrack_max should be set to 813440\n     - Using the kernel's default ratio, the nf_conntrack module's `hashsize' parameter should be set to 101680\n\n    root:~/Working/sysadmin-tools/conntrack# ./conntrack_table_memory --output conntrack_max 256 \u003e /proc/sys/net/netfilter/nf_conntrack_max\n    root:~/Working/sysadmin-tools/conntrack# ./conntrack_table_memory --output hashsize 256 \u003e /sys/module/nf_conntrack/parameters/hashsize\n    root:~/Working/sysadmin-tools/conntrack# cat /proc/sys/net/netfilter/nf_conntrack_max\n    813440\n    root:~/Working/sysadmin-tools/conntrack# cat /sys/module/nf_conntrack/parameters/hashsize\n    101888\n\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fcatalyst%2Fconntrack-table-memory","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fcatalyst%2Fconntrack-table-memory","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fcatalyst%2Fconntrack-table-memory/lists"}