Test impact of opening and closing file descriptors

open_perf_impact.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "id": "e262e2fb-a0ea-4291-92f1-b480b6f9743d",
   "metadata": {},
   "outputs": [],
   "source": [
    "import time\n",
    "import os"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "8f68debb-56e9-40dd-a648-de4a795f5c7e",
   "metadata": {},
   "source": [
    "# 1000 opening to write 10KB each time"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "id": "d101bed6-2904-4685-88b1-72c7e46ea995",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "0.12156033515930176\n"
     ]
    }
   ],
   "source": [
    "start = time.time()\n",
    "f=open('test1.txt', 'wb')\n",
    "for i in range(1000):\n",
    "    f.write(os.urandom(10000))\n",
    "f.close()\n",
    "end = time.time()\n",
    "print(end - start)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "id": "86c36688-383f-4bf4-b6af-352d17248238",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "0.2606394290924072\n"
     ]
    }
   ],
   "source": [
    "start = time.time()\n",
    "for i in range(1000):\n",
    "    f=open('test2.txt', 'wb')\n",
    "    f.write(os.urandom(10000))\n",
    "    f.close()\n",
    "\n",
    "end = time.time()\n",
    "print(end - start)"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "42ee3816-4267-4aac-9023-b1630e07887c",
   "metadata": {},
   "source": [
    "# 100 opening to write 100KB each time"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "id": "cfcc135c-9f47-4e4b-81c3-f34c9c00549f",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "0.11486291885375977\n"
     ]
    }
   ],
   "source": [
    "start = time.time()\n",
    "f=open('test1.txt', 'wb')\n",
    "for i in range(100):\n",
    "    f.write(os.urandom(100000))\n",
    "f.close()\n",
    "end = time.time()\n",
    "print(end - start)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "id": "f91f84c8-6937-4032-bcd7-7e1c5a1c974d",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "0.14225053787231445\n"
     ]
    }
   ],
   "source": [
    "start = time.time()\n",
    "for i in range(100):\n",
    "    f=open('test2.txt', 'wb')\n",
    "    f.write(os.urandom(100000))\n",
    "    f.close()\n",
    "\n",
    "end = time.time()\n",
    "print(end - start)"
   ]
  }
 ],
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