Performance stats

Hey,

Just thought I'd share some test results with you quick.
- Server is an instance on AWS
- Source image is huge (10800 × 5400, 14,5 MB) http://upload.wikimedia.org/wikipedia/commons/3/3d/LARGE_elevation.jpg

In case you get bored to death before you get to the bottom of this, somewhat useless piece of information, thanks.

So, I'm here...


... the server is here...


...and the src is here:


Using Siege I started a siege doing a 'resize=640' and then a few minutes later asked someone else to hit a new one, 'resize=1080', and then a few minutes later again, another person using 'resize=720'

I took 2 screenshots and a `top -c` output copy/paste from the server. Once as the second siege got started and then again while all 3 were running.
- I was running 4 Unicorn workers using the code from my release brach here: https://github.com/eksoverzero/magickly/tree/release
- There does seem to be an issue with S3 or something. I have no idea why, between an EC2 instance and a S3 bucket it would be so slow.
- The 'Longest transaction' times aren't bad considering the image it's processing?

```
siege -d10 -c100 http://**********.co.za/\?src\=http://upload.wikimedia.org/wikipedia/commons/3/3d/LARGE_elevation.jpg\&resize\=640

Transactions: 13209 hits
Availability: 99.91 %
Elapsed time: 867.17 secs
Data transferred: 635.99 MB
Response time: 1.49 secs
Transaction rate: 15.23 trans/sec
Throughput: 0.73 MB/sec
Concurrency: 22.76
Successful transactions: 13209
Failed transactions: 12
Longest transaction: 29.20
Shortest transaction: 0.91
```

```
siege -d10 -c100 http://**********.co.za/\?src\=http://upload.wikimedia.org/wikipedia/commons/3/3d/LARGE_elevation.jpg\&resize\=1080

Transactions: 11821 hits
Availability: 99.90 %
Elapsed time: 902.52 secs
Data transferred: 1567.70 MB
Response time: 2.53 secs
Transaction rate: 13.10 trans/sec
Throughput: 1.74 MB/sec
Concurrency: 33.12
Successful transactions: 11821
Failed transactions: 12
Longest transaction: 30.21
Shortest transaction: 2.00
```

```
siege -d10 -c100 http://**********.co.za/\?src\=http://upload.wikimedia.org/wikipedia/commons/3/3d/LARGE_elevation.jpg\&resize\=720

Transactions: 7272 hits
Availability: 99.85 %
Elapsed time: 495.33 secs
Data transferred: 438.29 MB
Response time: 1.66 secs
Transaction rate: 14.68 trans/sec
Throughput: 0.88 MB/sec
Concurrency: 24.31
Successful transactions: 7272
Failed transactions: 11
Longest transaction: 29.15
Shortest transaction: 1.13
```

Here are the app and monitoring stats:



```
top - 14:10:33 up 10 days, 1:04, 1 user, load average: 0.04, 0.24, 0.20
Tasks: 81 total, 1 running, 80 sleeping, 0 stopped, 0 zombie
Cpu(s): 2.9%us, 1.5%sy, 0.0%ni, 94.9%id, 0.0%wa, 0.0%hi, 0.7%si, 0.0%st
Mem: 7629456k total, 5436484k used, 2192972k free, 210020k buffers
Swap: 0k total, 0k used, 0k free, 4415104k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
7810 ******* 20 0 395m 96m 4176 S 2 1.3 0:13.78 unicorn worker[1] -p 5000 -c ./config/unicorn.rb
8203 www-data 20 0 64132 3232 1020 S 2 0.0 0:03.08 nginx: worker process
7813 ******* 20 0 396m 97m 4176 S 2 1.3 0:13.49 unicorn worker[2] -p 5000 -c ./config/unicorn.rb
7816 ******* 20 0 407m 94m 4184 S 2 1.3 0:13.75 unicorn worker[3] -p 5000 -c ./config/unicorn.rb
7807 ******* 20 0 396m 97m 4176 S 1 1.3 0:14.04 unicorn worker[0] -p 5000 -c ./config/unicorn.rb
5275 mongodb 20 0 6781m 85m 17m S 1 1.1 24:16.05 /usr/bin/mongod --config /etc/mongodb.conf
```



```
top - 14:19:57 up 10 days, 1:14, 1 user, load average: 0.49, 0.39, 0.32
Tasks: 81 total, 1 running, 80 sleeping, 0 stopped, 0 zombie
Cpu(s): 3.2%us, 2.7%sy, 0.0%ni, 92.8%id, 0.0%wa, 0.0%hi, 1.2%si, 0.2%st
Mem: 7629456k total, 5314188k used, 2315268k free, 210036k buffers
Swap: 0k total, 0k used, 0k free, 4425396k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
10884 ******* 20 0 289m 64m 3968 S 3 0.9 0:02.08 unicorn worker[2] -p 5000 -c ./config/unicorn.rb
8204 www-data 20 0 64296 3304 932 S 3 0.0 0:06.52 nginx: worker process
10878 ******* 20 0 289m 64m 3968 S 2 0.9 0:02.61 unicorn worker[0] -p 5000 -c ./config/unicorn.rb
10860 ******* 20 0 289m 64m 3968 S 1 0.9 0:02.92 unicorn worker[3] -p 5000 -c ./config/unicorn.rb
10846 ******* 20 0 289m 64m 3988 S 1 0.9 0:04.05 unicorn worker[1] -p 5000 -c ./config/unicorn.rb
8203 www-data 20 0 63904 3004 1024 S 1 0.0 0:07.71 nginx: worker process
```