chow1937

Open Files Limit

Changing Limit For Current Session

Most operating systems can change the open-files limit for the current shell session using the ulimit -n command:

ulimit -n 200000

Mac OS X El Capitan

chow1937

/var/lib/redis/logs/redis.log {
    daily
    rotate 14
    copytruncate
    delaycompress
    compress
    notifempty
    missingok
}

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#!/usr/bin/env python

import sys

from random import random
from time import sleep
from threading import Thread, active_count

execfile('gunicorn.conf.py')

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#!/usr/bin/env bash

# This script prints out all of your Redis keys and their size in a human readable format
# Copyright 2013 Brent O'Connor
# License: http://www.apache.org/licenses/LICENSE-2.0

human_size() {
        awk -v sum="$1" ' BEGIN {hum[1024^3]="Gb"; hum[1024^2]="Mb"; hum[1024]="Kb"; for (x=1024^3; x>=1024; x/=1024) { if (sum>=x) { printf "%.2f %s\n",sum/x,hum[x]; break; } } if (sum<1024) print "1kb"; } '
}

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import time
import calendar
import email.utils as eutils


def gmtstr2timestamp(gmtstr):
    """Transform GMT time string to Unix timestamp.

    format:: '%a %d %b %Y %H:%M:%S %Z'
    """

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#!/usr/bin/env python
# http://www.rabbitmq.com/tutorials/tutorial-two-python.html
import pika
import sys

connection = pika.BlockingConnection(pika.ConnectionParameters(
        host='localhost'))
channel = connection.channel()

message = ' '.join(sys.argv[1:]) or "Hello World!"

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Latency Comparison Numbers
--------------------------
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

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SHELL := /bin/bash

REV := $(shell git rev-parse HEAD)
CHANGES := $(shell test -n "$$(git status --porcelain)" && echo '+CHANGES' || true)

TARGET := packer-provisioner-itamae-local
VERSION := $(shell cat VERSION)

OS := darwin freebsd linux openbsd
ARCH := 386 amd64

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import itertools


def pairwise(seq):
    """All credit to http://stackoverflow.com/a/5389547 ."""
    iter_seq = iter(seq)
    return itertools.izip(iter_seq, iter_seq)

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FastCGI 相关资料

文章

• Apache, FastCGI and Python

• FastCGI, SCGI, and Apache: Background and Future

• FastCGI SCGI HTTP