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On Fri, 2011-04-01 at 14:44 -0700, Bill Longman wrote: |
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... |
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> So, what can you actually *do* on this, other than an "ls" or two? |
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Well, first the "challenge" did not require that it had to have any use. |
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But thinking about what you said, I remember when I first started using |
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Linux, it was not unthinkable to think that was enough memory to do |
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stuff. |
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So I decided to build another VM and actually install stuff on it. I |
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thought about what I'd typically be running on my desktop. Being that |
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this is a graphics-less machine, I installed non-gui equivalents: |
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* mutt for email |
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* irssi for irc |
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* vim for text editing |
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* pidgin (finch) for IM |
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* lynx for browsing the web |
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* screen for multi-tasking |
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Then I added a NIC so that I could actually get on the network. |
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Interestingly enough, adding the virtio NIC made the VM jump up to 18MB |
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on the initial boot/shell, but adding a non-virtio NIC kept it down to |
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3MB. |
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Then I added a regular user and did "typical" things: |
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marduk@lilpenguin $ ps -ef |grep ^$USER |
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marduk 2081 2080 0 21:36 ttyS0 00:00:00 -dash |
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marduk 2094 2081 0 21:36 ttyS0 00:00:00 screen -T vt100 |
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marduk 2095 2094 0 21:36 ? 00:00:02 SCREEN -T vt100 |
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marduk 2096 2095 0 21:36 pts/0 00:00:00 -/bin/dash |
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marduk 2101 2096 0 21:36 pts/0 00:00:00 mutt |
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marduk 2102 2095 0 21:37 pts/1 00:00:00 -/bin/dash |
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marduk 2107 2102 0 21:37 pts/1 00:00:00 lynx |
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http://m.reuters.com/ |
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marduk 2110 2107 0 21:37 pts/1 00:00:00 [lynx] <defunct> |
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marduk 2111 2095 0 21:37 pts/2 00:00:00 -/bin/dash |
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marduk 2116 2111 0 21:38 pts/2 00:00:00 vim helloworld.py |
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marduk 2117 2095 0 21:38 pts/3 00:00:00 -/bin/dash |
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marduk 2122 2117 0 21:38 pts/3 00:00:00 irssi |
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marduk 2124 2095 0 21:41 pts/4 00:00:00 -/bin/dash |
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marduk 2129 2124 0 21:41 pts/4 00:00:00 finch |
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marduk 2131 2095 0 21:42 pts/5 00:00:00 -/bin/dash |
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marduk 2149 2095 0 21:43 pts/6 00:00:00 -/bin/dash |
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marduk 2154 2149 0 21:43 pts/6 00:00:00 ssh tanuki@victoria |
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marduk 2176 2131 0 21:46 pts/5 00:00:00 ps -ef |
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marduk 2177 2131 0 21:46 pts/5 00:00:00 grep ^marduk |
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marduk@lilpenguin $ free -m |
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total used free shared buffers cached |
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Mem: 33 28 5 0 0 9 |
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-/+ buffers/cache: 18 14 |
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Swap: 0 0 0 |
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marduk@lilpenguin $ netstat -tn|grep ESTABLISHED |wc -l |
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5 |
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So, running screen (with 7 sessions), 8 dash shells, mutt, irssi, finch, |
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an ssh session, lynx, vim and 5 TCP connections open still only takes up |
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18MB RAM (excluding cache). Still not bad. |
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