屑俺日記

☆ お馬鹿でないfizzbuzz

お馬鹿なfizzbuzzと、実行時間はあまり変らなかった。
以下、RasPI Bで。

#include<stdio.h>
#define FIRST 1
#define LAST 100000000
int main()
{
  int x;
  for(x=FIRST; x<=LAST; x++)
  {
    if (x%15==0) printf("fizzbuzz\n");
    else if (x%5==0) printf("buzz\n");
    else if (x%3==0) printf("fizz\n");
    else printf("%d\n", x);
  } 
  return 0;
}

$ time ./orginally_fizzbuzz > /dev/null                
 
real    2m41.825s
user    2m40.090s
sys     0m0.640s

一割も変らない。

☆ さしあたりのGentoo

一昨日くらいから色々試行錯誤。
どうにかlxdeが上がった。

$ uname -a
Linux $GENTOO 3.18.7-gentoo #3 SMP Thu Mar 5 15:09:16 JST 2015 \
 x86_64 Intel(R) Core(TM)2 Duo CPU T8100 @ 2.10GHz GenuineIntel GNU/Linux

☆ 千円ちょっとで買った

LAN-W450AN/U2。ちょっと大きい。

wheezyでは駄目だったが、ubuntu14.04 では行けるようだ。
以下、Gentooに挿してみたところ。

$ diff before after
773a774,786
> [   55.701189] usb 2-2: new high-speed USB device number 2 \
 using ehci-pci
> [   55.833555] usb 2-2: New USB device found, idVendor=0789, \
 idProduct=016b
> [   55.833562] usb 2-2: New USB device strings: Mfr=1, Product=2, \
 SerialNumber=3
> [   55.833567] usb 2-2: Product: 802.11 n WLAN
> [   55.833571] usb 2-2: Manufacturer: Ralink
> [   55.833575] usb 2-2: SerialNumber: 1.0
> [   56.075223] usb 2-2: reset high-speed USB device number 2 \
 using ehci-pci
> [   56.200147] ieee80211 phy1: rt2x00_set_rt: Info - \
 RT chipset 3593, rev 0402 detected
> [   56.228403] ieee80211 phy1: rt2x00_set_rf: Info - RF chipset \
 000d detected
> [   56.228883] ieee80211 phy1: Selected rate control algorithm \
 'minstrel_ht'
> [   56.229333] usbcore: registered new interface driver rt2800usb
> [   56.254829] rt2800usb 2-2:1.0 wlp0s29f7u2: renamed from wlan0
> [   56.262134] systemd-udevd[3869]: renamed network interface \
 wlan0 to wlp0s29f7u2
 
$ diff nic_before nic_after
16a17,18
> 5: wlp0s29f7u2: <BROADCAST,MULTICAST> mtu 1500 qdisc \
 noop state DOWN group default qlen 1000
>     link/ether 34:95:db:02:cb:f5 brd ff:ff:ff:ff:ff:ff