docs: show off performance

Author: howeyc

README.md

@@ -13,10 +13,53 @@
 ## Purpose
 
 Ledger is a command line application for plain text accounting. Providing
-commands to view balances, register of transactions, importing of CSV files, exporting of CSV files,
-and a web interface to view reports, and track investments.
+commands to view balances, register of transactions, importing of CSV files,
+exporting of CSV files, and a web interface to view reports, and track
+investments. The transaction file format is heavily inspired by
+[ledger-cli](https://ledger-cli.org), with a focus on simplicity and
+performance.
 
 ## Documentation
 
 Head over to https://howeyc.github.io/ledger/
 
+## Performance
+
+Comparison between various ledger-like applications:
+
+- ledger-go
+- [ledger-cli](https://ledger-cli.org)
+- [hledger](https://hledger.org)
+
+### Stats
+
+| Command | Mean | Min | Max | Relative |
+|:---|---:|---:|---:|---:|
+| `ledger-go stats` | 14.2ms ± 500µs | 13.1ms | 17.2ms | 1.00 |
+| `ledger-cli stats` | 165.5ms ± 1.3ms | 163.3ms | 169.6ms | 11.58 ± 0.49 |
+| `hledger-cli stats` | 1.3275s ± 10.9ms | 1.3051s | 1.3458s | 92.90 ± 3.92 |
+
+### Balance
+
+| Command | Mean | Min | Max | Relative |
+|:---|---:|---:|---:|---:|
+| `ledger-go bal` | 23.9ms ± 700µs | 22.9ms | 28.1ms | 1.00 |
+| `ledger-cli bal` | 139.5ms ± 1.3ms | 137.5ms | 144.3ms | 5.83 ± 0.18 |
+| `hledger-cli bal` | 1.333s ± 8.8ms | 1.3252s | 1.3559s | 55.66 ± 1.71 |
+
+### Register
+
+| Command | Mean | Min | Max | Relative |
+|:---|---:|---:|---:|---:|
+| `ledger-go reg` | 52ms ± 1.1ms | 50.5ms | 57.7ms | 1.00 |
+| `ledger-cli reg` | 1.7474s ± 20.8ms | 1.7138s | 1.7829s | 33.60 ± 0.84 |
+| `hledger-cli reg` | 1.9381s ± 8.8ms | 1.926s | 1.9564s | 37.26 ± 0.84 |
+
+### Print
+
+| Command | Mean | Min | Max | Relative |
+|:---|---:|---:|---:|---:|
+| `ledger-go print` | 40.9ms ± 800µs | 39.2ms | 44.2ms | 1.00 |
+| `ledger-cli print` | 239.1ms ± 2.8ms | 235.2ms | 246.5ms | 5.83 ± 0.14 |
+| `hledger-cli print` | 1.5487s ± 10ms | 1.5254s | 1.556s | 37.78 ± 0.83 |
+

ledger/genperf.bash

@@ -5,3 +5,33 @@ cbench --export-markdown perf-bal.md "ledger bal" "./ledger bal" "hledger bal"
 cbench --export-markdown perf-reg.md "ledger reg" "./ledger reg" "hledger reg"
 cbench --export-markdown perf-print.md "ledger print" "./ledger print" "hledger print"
 
+echo "## Performance" > perf.md
+echo "" >> perf.md
+echo "Comparison between various ledger-like applications:" >> perf.md
+echo "" >> perf.md
+echo "- ledger-go" >> perf.md
+echo "- [ledger-cli](https://ledger-cli.org)" >> perf.md
+echo "- [hledger](https://hledger.org)" >> perf.md
+echo "" >> perf.md
+
+echo "### Stats" >> perf.md
+echo "" >> perf.md
+cat perf-stats.md | sed -e 's/\.\/ledger/ledger-go/g' | sed -e 's/ledger /ledger-cli /g' >> perf.md
+echo "" >> perf.md
+
+echo "### Balance" >> perf.md
+echo "" >> perf.md
+cat perf-bal.md | sed -e 's/\.\/ledger/ledger-go/g' | sed -e 's/ledger /ledger-cli /g' >> perf.md
+echo "" >> perf.md
+
+echo "### Register" >> perf.md
+echo "" >> perf.md
+cat perf-reg.md | sed -e 's/\.\/ledger/ledger-go/g' | sed -e 's/ledger /ledger-cli /g' >> perf.md
+echo "" >> perf.md
+
+echo "### Print" >> perf.md
+echo "" >> perf.md
+cat perf-print.md | sed -e 's/\.\/ledger/ledger-go/g' | sed -e 's/ledger /ledger-cli /g' >> perf.md
+echo "" >> perf.md
+
+rm perf-stats.md perf-bal.md perf-reg.md perf-print.md