diff --git a/app/src/main/res/raw/abi.txt b/app/src/main/res/raw/abi.txt index 63f4ebc..00107c6 100644 --- a/app/src/main/res/raw/abi.txt +++ b/app/src/main/res/raw/abi.txt @@ -20,25 +20,25 @@ Here are the files featuring in 2.6 kernel : - trace =========================================================== -defhandler_coff: +defhandler_coff defined value : PER_SCOSVR3 0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS | SHORT_INODE =========================================================== -defhandler_elf: +defhandler_elf defined value : PER_LINUX 0 =========================================================== -defhandler_lcall7: +defhandler_lcall7 defined value : PER_SVR4 0x0001 | STICKY_TIMEOUTS | MMAP_PAGE_ZERO, =========================================================== -defhandler_libsco: +defhandler_libsco defined value: PER_SVR4 0x0001 | STICKY_TIMEOUTS | MMAP_PAGE_ZERO, diff --git a/app/src/main/res/raw/fs.txt b/app/src/main/res/raw/fs.txt index 9c07843..fd65493 100644 --- a/app/src/main/res/raw/fs.txt +++ b/app/src/main/res/raw/fs.txt @@ -15,35 +15,6 @@ kernel. Since some of the files _can_ be used to screw up your system, it is advisable to read both documentation and source before actually making adjustments. -1. /proc/sys/fs ----------------------------------------------------------- - -Currently, these files are in /proc/sys/fs: -- aio-max-nr -- aio-nr -- dentry-state -- dquot-max -- dquot-nr -- file-max -- file-nr -- inode-max -- inode-nr -- inode-state -- nr_open -- overflowuid -- overflowgid -- pipe-user-pages-hard -- pipe-user-pages-soft -- protected_fifos -- protected_hardlinks -- protected_regular -- protected_symlinks -- suid_dumpable -- super-max -- super-nr - -============================================================== - aio-nr aio-nr is the running total of the number of events specified on the diff --git a/app/src/main/res/raw/net.txt b/app/src/main/res/raw/net.txt index 03b87c0..fe0dcb3 100644 --- a/app/src/main/res/raw/net.txt +++ b/app/src/main/res/raw/net.txt @@ -89,8 +89,9 @@ compiler in order to reject unprivileged JIT requests once it has been surpassed. bpf_jit_limit contains the value of the global limit in bytes. +============================================================== + dev_weight --------------- The maximum number of packets that kernel can handle on a NAPI interrupt, it's a Per-CPU variable. For drivers that support LRO or GRO_HW, a hardware @@ -98,8 +99,9 @@ aggregated packet is counted as one packet in this context. Default: 64 +============================================================== + dev_weight_rx_bias --------------- RPS (e.g. RFS, aRFS) processing is competing with the registered NAPI poll function of the driver for the per softirq cycle netdev_budget. This parameter influences @@ -110,8 +112,9 @@ dev_weight adaptable for asymmetric CPU needs on RX/TX side of the network stack on dev_weight and is calculated multiplicative (dev_weight * dev_weight_rx_bias). Default: 1 +============================================================== + dev_weight_tx_bias --------------- Scales the maximum number of packets that can be processed during a TX softirq cycle. Effective on a per CPU basis. Allows scaling of current dev_weight for asymmetric @@ -119,8 +122,9 @@ net stack processing needs. Be careful to avoid making TX softirq processing a C Calculation is based on dev_weight (dev_weight * dev_weight_tx_bias). Default: 1 +============================================================== + default_qdisc --------------- The default queuing discipline to use for network devices. This allows overriding the default of pfifo_fast with an alternative. Since the default @@ -134,8 +138,10 @@ leaves. Virtual devices (like e.g. lo or veth) ignore this setting and instead default to noqueue. Default: pfifo_fast +============================================================== + busy_read ----------------- + Low latency busy poll timeout for socket reads. (needs CONFIG_NET_RX_BUSY_POLL) Approximate time in us to busy loop waiting for packets on the device queue. This sets the default value of the SO_BUSY_POLL socket option. @@ -145,8 +151,10 @@ globally via sysctl, a value of 50 is recommended. Will increase power usage. Default: 0 (off) +============================================================== + busy_poll ----------------- + Low latency busy poll timeout for poll and select. (needs CONFIG_NET_RX_BUSY_POLL) Approximate time in us to busy loop waiting for events. Recommended value depends on the number of sockets you poll on. @@ -158,18 +166,19 @@ sysctl.net.busy_read globally. Will increase power usage. Default: 0 (off) +============================================================== + rmem_default ------------- The default setting of the socket receive buffer in bytes. +============================================================== + rmem_max --------- The maximum receive socket buffer size in bytes. ========================================================== - tstamp_allow_data Allow processes to receive tx timestamps looped together with the original @@ -177,17 +186,18 @@ packet contents. If disabled, transmit timestamp requests from unprivileged processes are dropped unless socket option SOF_TIMESTAMPING_OPT_TSONLY is set. Default: 1 (on) +============================================================== wmem_default The default setting (in bytes) of the socket send buffer. +============================================================== wmem_max --------- The maximum send socket buffer size in bytes. +============================================================== message_burst and message_cost ------------------------------- These parameters are used to limit the warning messages written to the kernel log from the networking code. They enforce a rate limit to make a @@ -196,8 +206,8 @@ fewer messages that will be written. Message_burst controls when messages will be dropped. The default settings limit warning messages to one every five seconds. +============================================================== warnings --------- This sysctl is now unused. @@ -208,8 +218,8 @@ checksums. These messages are now emitted at KERN_DEBUG and can generally be enabled and controlled by the dynamic_debug facility. +============================================================== netdev_budget -------------- Maximum number of packets taken from all interfaces in one polling cycle (NAPI poll). In one polling cycle interfaces which are registered to polling are @@ -217,21 +227,21 @@ probed in a round-robin manner. Also, a polling cycle may not exceed netdev_budget_usecs microseconds, even if netdev_budget has not been exhausted. +============================================================== netdev_budget_usecs ---------------------- Maximum number of microseconds in one NAPI polling cycle. Polling will exit when either netdev_budget_usecs have elapsed during the poll cycle or the number of packets processed reaches netdev_budget. +============================================================== netdev_max_backlog ------------------- Maximum number of packets, queued on the INPUT side, when the interface receives packets faster than kernel can process them. +============================================================== netdev_rss_key --------------- RSS (Receive Side Scaling) enabled drivers use a 40 bytes host key that is randomly generated. @@ -252,8 +262,8 @@ RX flow hash indirection table for eth0 with 8 RX ring(s): RSS hash key: 84:50:f4:00:a8:15:d1:a7:e9:7f:1d:60:35:c7:47:25:42:97:74:ca:56:bb:b6:a1:d8:43:e3:c9:0c:fd:17:55:c2:3a:4d:69:ed:f1:42:89 +============================================================== netdev_tstamp_prequeue ----------------------- If set to 0, RX packet timestamps can be sampled after RPS processing, when the target CPU processes packets. It might give some delay on timestamps, but @@ -262,14 +272,14 @@ permit to distribute the load on several cpus. If set to 1 (default), timestamps are sampled as soon as possible, before queueing. +============================================================== optmem_max ----------- Maximum ancillary buffer size allowed per socket. Ancillary data is a sequence of struct cmsghdr structures with appended data. +============================================================== fb_tunnels_only_for_init_net ----------------------------- Controls if fallback tunnels (like tunl0, gre0, gretap0, erspan0, sit0, ip6tnl0, ip6gre0) are automatically created when a new @@ -280,8 +290,8 @@ user space is responsible for creating them if needed. Default : 0 (for compatibility reasons) +============================================================== devconf_inherit_init_net ----------------------------- Controls if a new network namespace should inherit all current settings under /proc/sys/net/{ipv4,ipv6}/conf/{all,default}/. By @@ -294,19 +304,26 @@ forced to reset to their default values. Default : 0 (for compatibility reasons) +============================================================== + 2. /proc/sys/net/unix - Parameters for Unix domain sockets -------------------------------------------------------- There is only one file in this directory. -unix_dgram_qlen limits the max number of datagrams queued in Unix domain + +============================================================== +unix_dgram_qlen + +Limits the max number of datagrams queued in Unix domain socket's buffer. It will not take effect unless PF_UNIX flag is specified. +============================================================== 3. /proc/sys/net/ipv4 - IPV4 settings ------------------------------------------------------- Please see: Documentation/networking/ip-sysctl.txt and ipvs-sysctl.txt for descriptions of these entries. +============================================================== 4. Appletalk ------------------------------------------------------- @@ -314,75 +331,33 @@ descriptions of these entries. The /proc/sys/net/appletalk directory holds the Appletalk configuration data when Appletalk is loaded. The configurable parameters are: +============================================================== aarp-expiry-time ----------------- The amount of time we keep an ARP entry before expiring it. Used to age out old hosts. +============================================================== aarp-resolve-time ------------------ The amount of time we will spend trying to resolve an Appletalk address. +============================================================== aarp-retransmit-limit ---------------------- The number of times we will retransmit a query before giving up. +============================================================== aarp-tick-time --------------- Controls the rate at which expires are checked. -The directory /proc/net/appletalk holds the list of active Appletalk sockets -on a machine. - -The fields indicate the DDP type, the local address (in network:node format) -the remote address, the size of the transmit pending queue, the size of the -received queue (bytes waiting for applications to read) the state and the uid -owning the socket. - -/proc/net/atalk_iface lists all the interfaces configured for appletalk.It -shows the name of the interface, its Appletalk address, the network range on -that address (or network number for phase 1 networks), and the status of the -interface. - -/proc/net/atalk_route lists each known network route. It lists the target -(network) that the route leads to, the router (may be directly connected), the -route flags, and the device the route is using. - - -5. IPX -------------------------------------------------------- - -The IPX protocol has no tunable values in proc/sys/net. - -The IPX protocol does, however, provide proc/net/ipx. This lists each IPX -socket giving the local and remote addresses in Novell format (that is -network:node:port). In accordance with the strange Novell tradition, -everything but the port is in hex. Not_Connected is displayed for sockets that -are not tied to a specific remote address. The Tx and Rx queue sizes indicate -the number of bytes pending for transmission and reception. The state -indicates the state the socket is in and the uid is the owning uid of the -socket. - -The /proc/net/ipx_interface file lists all IPX interfaces. For each interface -it gives the network number, the node number, and indicates if the network is -the primary network. It also indicates which device it is bound to (or -Internal for internal networks) and the Frame Type if appropriate. Linux -supports 802.3, 802.2, 802.2 SNAP and DIX (Blue Book) ethernet framing for -IPX. - -The /proc/net/ipx_route table holds a list of IPX routes. For each route it -gives the destination network, the router node (or Directly) and the network -address of the router (or Connected) for internal networks. +============================================================== 6. TIPC -------------------------------------------------------- +============================================================== tipc_rmem ----------- The TIPC protocol now has a tunable for the receive memory, similar to the tcp_rmem - i.e. a vector of 3 INTEGERs: (min, default, max) @@ -396,8 +371,8 @@ are scaled (shifted) versions of that same value. Note that the min value is not at this point in time used in any meaningful way, but the triplet is preserved in order to be consistent with things like tcp_rmem. +============================================================== named_timeout --------------- TIPC name table updates are distributed asynchronously in a cluster, without any form of transaction handling. This means that different race scenarios are