Performance issues with lighttpd

[lcmfq]

I directly tested the performance of lighttpd on Linux and Gramine, but the difference was 10 times. Why is this？

SGX=1 make start-gramine-server

wrk -c 30 -d 30 -t 1 http://127.0.0.1:8003/random/10K.1.html
Running 30s test @ http://127.0.0.1:8003/random/10K.1.html
1 threads and 30 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 169.27ms 327.21ms 1.94s 87.21%
Req/Sec 10.48k 54.20 10.61k 56.81%
313825 requests in 30.10s, 3.06GB read
Requests/sec: 10426.02
Transfer/sec: 103.98MB

make start-native-server
wrk -c 30 -d 30 -t 1 http://127.0.0.1:8003/random/10K.1.html
Running 30s test @ http://127.0.0.1:8003/random/10K.1.html
1 threads and 30 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 268.50us 57.31us 768.00us 92.79%
Req/Sec 111.55k 1.14k 115.05k 66.78%
3340805 requests in 30.10s, 32.54GB read
Requests/sec: 110990.21
Transfer/sec: 1.08GB

[kailun-qin]

This is mainly because Lighttpd is an I/O intensive workload that involves extensive OCALLs, see https://gramine.readthedocs.io/en/latest/performance.html#effects-of-system-calls-ocalls for details.

I believe there is room for optimization, but this would require more detailed profiling. Can you maybe share more details w/ us?

[lcmfq]

1.Lighttpd example is located in the gramine1.7/CI-Example/lighttpd.
2.The running commands are “make start-native-server” and SGX=1 make start-gramine-server“” respectively
3.The test command is “wrk -c 30 -d 30 -t 1 http://127.0.0.1:8003/random/10K.1.html”
4.The difference in test results between the two is 10 times.The test results are as follows:

SGX=1 make start-gramine-server
wrk -c 30 -d 30 -t 1 http://127.0.0.1:8003/random/10K.1.html
Running 30s test @ http://127.0.0.1:8003/random/10K.1.html
1 threads and 30 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 169.27ms 327.21ms 1.94s 87.21%
Req/Sec 10.48k 54.20 10.61k 56.81%
313825 requests in 30.10s, 3.06GB read
Requests/sec: 10426.02
Transfer/sec: 103.98MB

make start-native-server
wrk -c 30 -d 30 -t 1 http://127.0.0.1:8003/random/10K.1.html
Running 30s test @ http://127.0.0.1:8003/random/10K.1.html
1 threads and 30 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 268.50us 57.31us 768.00us 92.79%
Req/Sec 111.55k 1.14k 115.05k 66.78%
3340805 requests in 30.10s, 32.54GB read
Requests/sec: 110990.21
Transfer/sec: 1.08GB