start new:
tmux
start new with session name:
tmux new -s myname
# | |
# STL GDB evaluators/views/utilities - 1.03 | |
# | |
# The new GDB commands: | |
# are entirely non instrumental | |
# do not depend on any "inline"(s) - e.g. size(), [], etc | |
# are extremely tolerant to debugger settings | |
# | |
# This file should be "included" in .gdbinit as following: | |
# source stl-views.gdb or just paste it into your .gdbinit file |
Latency Comparison Numbers (~2012) | |
---------------------------------- | |
L1 cache reference 0.5 ns | |
Branch mispredict 5 ns | |
L2 cache reference 7 ns 14x L1 cache | |
Mutex lock/unlock 25 ns | |
Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
Compress 1K bytes with Zippy 3,000 ns 3 us | |
Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |
#!/usr/bin/env python | |
# Reflects the requests from HTTP methods GET, POST, PUT, and DELETE | |
# Written by Nathan Hamiel (2010) | |
from BaseHTTPServer import HTTPServer, BaseHTTPRequestHandler | |
from optparse import OptionParser | |
class RequestHandler(BaseHTTPRequestHandler): | |
def do_GET(self): |
import logging | |
import socket | |
log = logging.getLogger('udp_server') | |
def udp_server(host='127.0.0.1', port=1234): | |
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) | |
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) |