bdp s470

commands, such as Dir (), to view variables and functions, and directly enter the variable name to view the value of the variable. If the program exits unexpectedly, it will also retain the "site". We can analyze the site and find the error. 5. PDB debugging Finally, let's talk about this artifact. After reading the official documentation, the PDB module is implemented using the BDP module and the CMD module. Implement functions similar to PDB.

/wmem_max Maximum TCP data transmission window (in bytes ). 131071 513920 /Proc/sys/NET/CORE/netdev_max_backlog The maximum number of packets that can be sent to the queue when each network interface receives packets faster than the kernel processes these packets. 1000 2000 /Proc/sys/NET/CORE/somaxconn Defines the maximum length of the listening queue for each port in the system. This is a global parameter. 128 2048 /Proc/s

is n? 64kb/s; ② simulate multi-channel digital video and voice access, and increase or decrease the number of services to control the network background traffic; ③ when there is a certain background traffic, the network transmission capability and signal transmission quality are measured by increasing or decreasing the controllable rate of data services, including available link bandwidth, link latency and delay jitter, and data signal packet loss rate; ④ analyze the relationship between networ

principles, and urged me to resign my work home to study and think carefully.I was almost crying............The guidance of the Master 2 before the Master 1. But Master 1 gave me directions and ways to do it in detail. In addition to my heartfelt thanks, I can do is to write some "attack TCP congestion Control algorithm" article to put people for me, I for everyone's Christian ideas to many other people.Due to the respect of two masters and friends, I will not post the relevant code, the origin

passive routing=0Net.ipv4.conf.default.accept_source_route=0# Turn on reverse path filtering net.ipv4.conf.all.rp_filter=1Net.ipv4.conf.default.rp_filter=1# Make sure no one can modify the routing table Net.ipv4.conf.all.accept_redirects=0net.ipv4.conf.default.accept_redirects=0net.ipv4.conf.all.secure_redirects=0net.ipv4.conf.default.secure_redirects=0# does not act as a router net.ipv4.ip_forward=0net.ipv4.conf.all.send_redirects=0net.ipv4.conf.default.send_redirects=0# Open Execshildkernel.e

congestion window growth, in the early low-bandwidth, low latency network can play a good role, but with the increase in network bandwidth and delay, the shortcomings of Reno gradually manifested, the sender from the delivery of the paper to receive an ACK through a RTT, In High bandwidth latency (Hi Bandwidth-delay product,bdp) networks, the RTT is large, causing the congestion window to grow very slowly, and the transfer speed takes a long time to

each socket. 20480 81920 /proc/sys/net/ipv4/tcp_mem Determine how the TCP stack should reflect memory usage, and each value is in a memory page (usually 4KB). The first value is the lower limit for memory usage, and the second value is the upper limit of the applied pressure that the memory pressure pattern begins to use for the buffer, and the third value is the upper limit for memory usage. At this level, messages can be discarded, thereby reducing the use of memo

dynamic throttling mechanism is turned off. The default value of recv buffer is set by Net.core.rmem_default, but if Net.ipv4.tcp_rmem is set, the default value is overwritten. The maximum value for recv buffer can be set by system call setsockopt () to Net.core.rmem_max. It is recommended that the default value of the buffer be set to the BDP when the buffering dynamic adjustment mechanism is turned off.The auto-tuning mechanism of the send-side buf

allowed to be sent to a queue when each network interface receives a packet at a rate that is faster than the rate at which the kernel processes these packets. 1000 2000 /proc/sys/net/core/somaxconn Defines the length of the maximum listening queue for each port in the system, which is a global parameter. 128 2048 /proc/sys/net/core/optmem_max Represents the size of the maximum buffer allow

indicates how much data can be sent, why can't we follow the behavior that the receiving side actually receives to guide the sending behavior? Why has it been a one-time delivery for decades and remains the same? At least the Linux TCP is like this, I believe other good not to go, after all, "evil, will be cut off" is only a wish. Bad money drives good money, everyone is evil, evil becomes goodness.This is the sorrow of TCP! Google's engineers see this sadness, created a BBR algorithm, draw cou

packets. 1000 2000 /proc/sys/net/core/somaxconn Defines the length of the maximum listening queue for each port in the system, which is a global parameter. 128 2048 /proc/sys/net/core/optmem_max Represents the size of the maximum buffer allowed for each socket. 20480 81920 /proc/sys/net/ipv4/tcp_mem Determine how the TCP stack should reflect memory usage, and each value is in a memory page (usually 4KB). The

. Allow For more PIDs (to redu CE rollover problems); May-Break Some programs 32768 Kernel.pid_max = 65536 # Increase system IP Port limits Net.ipv4.ip_local_port_range = 200 0 65000 # Increase TCP max buffer size setable using setsockopt () Net.ipv4.tcp_rmem = 4096 87380 8388608 net.ipv4.tcp_wm EM = 4096 87380 8388608 # increase Linux auto tuning TCP buffer limits # min, default, and max number of bytes to use # Set Max to at least 4MB, or higher if your use very high

+xArc bic angle of 2β=2arcsin (A/R)The Arc bic length is 2rβ Attached code: #include Supplementary Proof Re-describe the problem againOn the outside of the circle O as a tangent ab, ac,m for BC Midpoint, even am intersection o in P, F. Take a little q on the 劣弧 BC, and extend the AG to a circle o to D.Verification: P is the heart of ΔABC, ∠bqm+∠aqc=180°Proof: You can learn a little bit about the harmonic dots and the harmonic wiring harness .Because APMF is the harmonic point column, so CA, C

.conf.default.send_redirects = 0# Open ExecshildKernel.exec-shield = 1Kernel.randomize_va_space = 1# IPV6 Settingsnet.ipv6.conf.default.router_solicitations = 0Net.ipv6.conf.default.accept_ra_rtr_pref = 0Net.ipv6.conf.default.accept_ra_pinfo = 0NET.IPV6.CONF.DEFAULT.ACCEPT_RA_DEFRTR = 0net.ipv6.conf.default.autoconf = 0Net.ipv6.conf.default.dad_transmits = 0net.ipv6.conf.default.max_addresses = 1# optimize the port used by LB# Add System file descriptor limitFs.file-max = 65535# Allow more PIDs