informatique:system_admin:tcp
Différences
Ci-dessous, les différences entre deux révisions de la page.
Les deux révisions précédentesRévision précédenteProchaine révision | Révision précédenteDernière révisionLes deux révisions suivantes | ||
informatique:system_admin:tcp [07/07/2020 07:56] – cyrille | informatique:system_admin:tcp [07/07/2020 08:29] – limits.d/nofile.conf cyrille | ||
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Ligne 5: | Ligne 5: | ||
Sources: | Sources: | ||
* https:// | * https:// | ||
+ | * https:// | ||
+ | * https:// | ||
+ | Les valeurs sont lisibles dans ''/ | ||
+ | |||
+ | Sur les performances: | ||
<code bash> | <code bash> | ||
+ | $ cat / | ||
+ | |||
+ | # debian 10.4 = 1024 | ||
+ | * soft nofile 4096 | ||
+ | |||
$ cat / | $ cat / | ||
# Increase number of incoming connections | # Increase number of incoming connections | ||
+ | # debian 10.4 = 128 | ||
net.core.somaxconn = 1024 | net.core.somaxconn = 1024 | ||
# Increase number of incoming connections backlog | # Increase number of incoming connections backlog | ||
+ | # debian 10.4 = 1000 | ||
net.core.netdev_max_backlog = 4096 | net.core.netdev_max_backlog = 4096 | ||
# Decrease the time default value for tcp_fin_timeout connection | # Decrease the time default value for tcp_fin_timeout connection | ||
+ | # debian 10.4 = 60 | ||
net.ipv4.tcp_fin_timeout = 15 | net.ipv4.tcp_fin_timeout = 15 | ||
# Decrease the time default value for connections to keep alive | # Decrease the time default value for connections to keep alive | ||
+ | # debian 10.4 = 7200 | ||
net.ipv4.tcp_keepalive_time = 300 | net.ipv4.tcp_keepalive_time = 300 | ||
+ | # debian 10.4 = 9 | ||
net.ipv4.tcp_keepalive_probes = 5 | net.ipv4.tcp_keepalive_probes = 5 | ||
+ | # debian 10.4 = 75 | ||
net.ipv4.tcp_keepalive_intvl = 15 | net.ipv4.tcp_keepalive_intvl = 15 | ||
- | </ | + | # try to reuse time-wait connections, |
+ | # debian 10.4 No such file or directory | ||
+ | # | ||
+ | # # debian 10.4 = 2 | ||
+ | net.ipv4.tcp_tw_reuse = 1 | ||
- | À avoir : | + | # Limit number of orphans, each orphan can eat up to 16M (max wmem) of unswappable memory |
- | * tcp_keepalive_time | + | # debian 10.4 = 32768 |
- | * /proc/sys/net/ipv4/ | + | net.ipv4.tcp_max_orphans = 16384 |
- | * /proc/sys/net/ipv4/ | + | # debian 10.4 = 0 |
+ | #net.ipv4.tcp_orphan_retries = 0 | ||
+ | # How many times to retry killing an alive TCP connection | ||
+ | # debian 10.4 = 15 | ||
+ | # | ||
+ | # debian 10.4 = 3 | ||
+ | # | ||
+ | |||
+ | </ | ||
informatique/system_admin/tcp.txt · Dernière modification : 10/11/2022 21:30 de cyrille