How many packets can be written into Kernel sockets per second?

Login or Register to Ask a Question and Join Our Community

How many packets can be written into Kernel sockets per second?

Tags

Login to Discuss or Reply to this Discussion in Our Community

Top Forums UNIX for Advanced & Expert Users How many packets can be written into Kernel sockets per second?

04-29-2016

Registered User

6, 0

Join Date: Sep 2010

Last Activity: 29 April 2016, 7:56 PM EDT

Location: Bangalore

Posts: 6

Thanks Given: 0

Thanked 0 Times in 0 Posts

How many packets can be written into Kernel sockets per second?

Hi,

Its been a long time since i programmed a multithreaded application that can do Tx and Rx of datagrams over unix sockets.

I well remember that though the threads were efficiently designed to be independent of each other, and was writing to different sockets, there was a limitation , which i remember that only 3000 approximate datagrams/packets can be sent/received between the host application and the kernel - which i came to know from some forums, and infact, our timers used to expire due to non-reception of approx >3000 packets if it was configured - reason being the kernel to host transfer of the packets were slow.

Before i could attempt figuring out that again, wanted to ask if anyone knows a theoretical limitation seen by the linux kernels?
In other terms, what is the max data transfer rate between the Kernel space and user space through the various IPC mechanisms?

If i don't get to know that, i may end up doing an assumption.

binnyjeshan

View Public Profile for binnyjeshan

Find all posts by binnyjeshan

Login or Register to Ask a Question

Previous Thread | Next Thread

9 More Discussions You Might Find Interesting

1. Linux

Unload kernel module at boot time (Debian Wheezy 7.2, 3.2.0-4-686-pae kernel)

Hi everyone, I am trying to prevent the ehci_hcd kernel module to load at boot time. Here's what I've tried so far: 1) Add the following line to /etc/modprobe.d/blacklist.conf (as suggested here): 2) Blacklisted the module by adding the following string to 3) Tried to blacklist the module...

2. Programming

Why am i getting these strange packets while running my packet capture module written in c.?

I have made an packet capture application running on intel machine, it is capturing packets with src address- 17.0.0.0 destination ip- 66.0.0.0, source port- 0, destination port- 0, and protocol- 0 what does these packets mean ? The code written to interpreter captured bytes is given below....

3. Solaris

syslog is not getting written

hi all syslog is not getting written. i am getting following two logs snmpd.log & authlog logs. please tell what are two logs snmpd.log & authlog logs. why syslog is not written.

4. Programming

c++, raw sockets, stopping kernel write in header?

Hi, im trying to lern about raw sockets with my debian and c++. Tried to make a icmp and tcp packet and send it with sendto. Checked on wireshark and recognized that kernel changed my headers. So searched about stopping the kernel change the header and tried it with setsockopt, like said in at this...

5. Solaris

Which file is read by kernel to set its default system kernel parameters values?

Hi gurus Could anybody tell me which file is read by kernel to set its default system kernal parameters values in solaris. Here I am not taking about /etc/system file which is used to load kernal modules or to change any default system kernal parameter value Is it /dev/kmem file or something...

6. SuSE

max number of slabs per kernel module (kernel 2.6.17, suse)

Hi All, Is there a max number of slabs that can be used per kernel module? I'm having a tough time finding out that kind of information, but the array 'node_zonelists' (mmzone.h) has a size of 5. I just want to avoid buffer overruns and other bad stuff. Cheers, Brendan

7. IP Networking

counting the packets

there are a number of clients connected to a server.... how can i count that each clients recieve ...? how do i moniter the activity of the client..?

8. Programming

Packets Getting Lost

I am working on a project, which has the following type of hardware setup. A special hardware device is receiving data from an external network interface. So we can have multiple such a hardware devices. Now these hardware devices will route the captured incoming data through the external...

9. UNIX for Dummies Questions & Answers

File being used/written

Hello, Which command in unix can tell whether a file is being used/written by another process. e.g. If one process is copying a very big file in some directory and there is another cronjob process which checks for a new file and in this directory and process the file. I want to check, if the...

Login or Register to Ask a Question

LEARN ABOUT DEBIAN

ss

SS(8)							      System Manager's Manual							     SS(8)

NAME

       ss - another utility to investigate sockets

SYNOPSIS

       ss [options] [ FILTER ]

DESCRIPTION

       ss  is  used  to  dump socket statistics. It allows showing information similar to netstat.  It can display more TCP and state informations
       than other tools.

OPTIONS

       When no option is used ss displays a list of open non-listening TCP sockets that have established connection.

       These programs follow the usual GNU command line syntax, with long
	      options starting with two dashes (`-').  A summary of options is included below.

       -h, --help
	      Show summary of options.

       -V, --version
	      Output version information.

       -n, --numeric
	      Do not try to resolve service names.

       -r, --resolve
	      Try to resolve numeric address/ports.

       -a, --all
	      Display both listening and non-listening (for TCP this means established connections) sockets.

       -l, --listening
	      Display only listening sockets (these are omitted by default).

       -o, --options
	      Show timer information.

       -e, --extended
	      Show detailed socket information

       -m, --memory
	      Show socket memory usage.

       -p, --processes
	      Show process using socket.

       -i, --info
	      Show internal TCP information.

       -s, --summary
	      Print summary statistics. This option does not parse socket lists obtaining summary from various sources. It is useful  when  amount
	      of sockets is so huge that parsing /proc/net/tcp is painful.

       -4, --ipv4
	      Display only IP version 4 sockets (alias for -f inet).

       -6, --ipv6
	      Display only IP version 6 sockets (alias for -f inet6).

       -0, --packet
	      Display PACKET sockets (alias for -f link).

       -t, --tcp
	      Display TCP sockets.

       -u, --udp
	      Display UDP sockets.

       -d, --dccp
	      Display DCCP sockets.

       -w, --raw
	      Display RAW sockets.

       -x, --unix
	      Display Unix domain sockets (alias for -f unix).

       -f FAMILY, --family=FAMILY
	      Display sockets of type FAMILY.  Currently the following families are supported: unix, inet, inet6, link, netlink.

       -A QUERY, --query=QUERY, --socket=QUERY
	      List  of	socket	tables	to  dump,  separated  by commas. The following identifiers are understood: all, inet, tcp, udp, raw, unix,
	      packet, netlink, unix_dgram, unix_stream, packet_raw, packet_dgram.

       -D FILE, --diag=FILE
	      Do not display anything, just dump raw information about TCP sockets to FILE after applying filters. If FILE is - stdout is used.

       -F FILE, --filter=FILE
	      Read filter information from FILE.  Each line of FILE is interpreted like single command line option. If FILE is - stdin is used.

       FILTER := [ state TCP-STATE ] [ EXPRESSION ]
	      Please take a look at the official documentation (Debian package iproute-doc) for details regarding filters.

USAGE EXAMPLES

       ss -t -a
	      Display all TCP sockets.

       ss -u -a
	      Display all UDP sockets.

       ss -o state established '( dport = :ssh or sport = :ssh )'
	      Display all established ssh connections.

       ss -x src /tmp/.X11-unix/*
	      Find all local processes connected to X server.

       ss -o state fin-wait-1 '( sport = :http or sport = :https )' dst 193.233.7/24
	      List all the tcp sockets in state FIN-WAIT-1 for our apache to network 193.233.7/24 and look at their timers.

SEE ALSO

       ip(8), /usr/share/doc/iproute-doc/ss.html (package iproutedoc)

AUTHOR

       ss was written by Alexey Kuznetosv, <kuznet@ms2.inr.ac.ru>.

       This manual page was written by Michael Prokop <mika@grml.org> for the Debian project (but may be used by others).

																	     SS(8)