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Update performance.md

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Mengsk 2020-04-13 20:35:57 +02:00 • committed by drakkan
parent b0ed190591
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docs/performance.md
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@ -2,7 +2,7 @@
SFTPGo can easily saturate a Gigabit connection on low end hardware with no special configuration, this is generally enough for most use cases.
For Multi-Gig connections, some performance improvements and comparisons with OpenSSH have been discussed [here](https://github.com/drakkan/sftpgo/issues/69), some of them need upstream updates so there are not included in the SFTPGo released version (0.9.6) yet. To summarize:
For Multi-Gig connections, some performance improvements and comparisons with OpenSSH have been discussed [here](https://github.com/drakkan/sftpgo/issues/69), most of them have been included in the master branch. To summarize:
- In current state with all performance improvements applied, SFTP performance is very close to OpenSSH however CPU usage is higher. SCP performance match OpenSSH.
- The main bottlenecks are the encryption and the messages authentication, so if you can use a fast cipher with implicit messages authentication, such as `aes128-gcm@openssh.com`, you will get a big performance boost.
- SCP protocol is much simpler than SFTP and so, the multi-platform, SFTPGo's SCP implementation performs better than SFTP.
@ -15,7 +15,7 @@ For Multi-Gig connections, some performance improvements and comparisons with Op
OS| Debian 10.2 x64 |
CPU| Ryzen5 3600 |
RAM| 64GB 2400MHz ECC |
Disk| 3* Intel P4510 4TB RAID0 |
Disk| Ramdisk |
Ethernet| Mellanox ConnectX-3 40GbE|
**Client** ||
@ -23,13 +23,14 @@ Ethernet| Mellanox ConnectX-3 40GbE|
OS| Ubuntu 19.10 x64 |
CPU| Threadripper 1920X |
RAM| 64GB 2400MHz ECC |
Disk| Samsung 960EVO 1TB |
Disk| Ramdisk |
Ethernet| Mellanox ConnectX-3 40GbE|
### Test configurations
- `Baseline`: SFTPGo version 0.9.6.
- `Optimized`: Various [optimizations](#Optimizations-applied) applied on top of 0.9.6.
- `Devel`: SFTPGo commit b0ed1905918b9dcc22f9a20e89e354313f491734, compiled with Golang 1.14.2 .
- `Optimized`: Various [optimizations](#Optimizations-applied) applied on top of `Devel`.
- `Balanced`: Two optimized instances, running on localhost, load balanced by HAProxy 2.1.3.
- `OpenSSH`: OpenSSH_7.9p1 Debian-10+deb10u2, OpenSSL 1.1.1d 10 Sep 2019
@ -42,44 +43,44 @@ The Message Authentication Code (MAC) used is `hmac-sha2-256`.
##### SFTP
Download:
Stream|Baseline MB/s|Optimized MB/s|Balanced MB/s|OpenSSH MB/s|
---|---|---|---|---|
1|149|306|370|378|
2|265|576|675|720|
3|341|807|880|1002|
4|402|1024|1150|1222|
8|518|1749|1400|1815|
Stream|Baseline MB/s|Devel MB/s|Optimized MB/s|Balanced MB/s|OpenSSH MB/s|
---|---|---|---|---|---|
1|150|243|319|412|452|
2|267|452|600|740|735|
3|351|637|802|991|1045|
4|414|811|1002|1192|1265|
8|536|1451|1742|1552|1798|
Upload:
Stream|Baseline MB/s|Optimized MB/s|Balanced MB/s|OpenSSH MB/s|
---|---|---|---|---|
1|165|292|340|355|
2|262|453|490|633|
3|327|566|560|726|
4|376|647|650|788|
8|478|735|700|806|
Stream|Baseline MB/s|Devel MB/s|Optimized MB/s|Balanced MB/s|OpenSSH MB/s|
---|---|---|---|---|---|
1|172|273|343|407|426|
2|284|469|595|673|738|
3|368|644|820|881|1090|
4|446|851|1041|1026|1244|
8|605|1210|1368|1273|1820|
##### SCP
Download:
Stream|Baseline MB/s|Optimized MB/s|Balanced MB/s|OpenSSH MB/s|
---|---|---|---|---|
1|215|509|579|470|
2|433|928|1097|828|
3|613|1327|1346|1174|
4|824|1670|1576|1424|
8|1281|2656|2049|1870|
Stream|Baseline MB/s|Devel MB/s|Optimized MB/s|Balanced MB/s|OpenSSH MB/s|
---|---|---|---|---|---|
1|220|369|525|611|558|
2|437|659|941|1048|856|
3|635|1000|1365|1363|1201|
4|787|1272|1664|1610|1415|
8|1297|2129|2690|2100|1959|
Upload:
Stream|Baseline MB/s|Optimized MB/s|Balanced MB/s|OpenSSH MB/s|
---|---|---|---|---|
1|189|354|393|428|
2|312|510|570|668|
3|401|621|664|803|
4|481|705|723|840|
8|652|767|799|884|
Stream|Baseline MB/s|Devel MB/s|Optimized MB/s|Balanced MB/s|OpenSSH MB/s|
---|---|---|---|---|---|
1|208|312|400|458|508|
2|360|516|647|745|926|
3|476|678|861|935|1254|
4|576|836|1080|1099|1569|
8|857|1161|1416|1433|2271|
#### Cipher aes128gcm@openssh.com
@ -88,72 +89,48 @@ With this cipher the messages authentication is implicit, no SHA256 computation
##### SFTP
Download:
Stream|Baseline MB/s|Optimized MB/s|Balanced MB/s|OpenSSH MB/s|
---|---|---|---|---|
1|322|388|561|401|
2|518|734|976|810|
3|638|1067|1214|1072|
4|723|1283|1415|1288|
8|844|2072|1742|1842|
Stream|Baseline MB/s|Devel MB/s|Optimized MB/s|Balanced MB/s|OpenSSH MB/s|
---|---|---|---|---|---|
1|332|423|<--|583|443|
2|533|755|<--|970|809|
3|666|1045|<--|1249|1098|
4|762|1276|<--|1461|1351|
8|886|2064|<--|1825|1933|
Upload:
Stream|Baseline MB/s|Optimized MB/s|Balanced MB/s|OpenSSH MB/s|
---|---|---|---|---|
1|318|353|415|381|
2|473|542|573|670|
3|569|672|657|757|
4|621|730|721|758|
8|694|825|763|815|
Stream|Baseline MB/s|Devel MB/s|Optimized MB/s|Balanced MB/s|OpenSSH MB/s|
---|---|---|---|---|---|
1|348|410|<--|527|469|
2|596|729|<--|842|930|
3|778|974|<--|1088|1341|
4|886|1192|<--|1232|1494|
8|1042|1578|<--|1433|1893|
##### SCP
Download:
Stream|Baseline MB/s|Optimized MB/s|Balanced MB/s|OpenSSH MB/s|
---|---|---|---|---|
1|669|734|818|447|
2|1218|1320|1367|883|
3|1752|1738|1755|1217|
4|2202|2238|2038|1475|
8|3151|3184|2391|1941|
Stream|Baseline MB/s|Devel MB/s|Optimized MB/s|Balanced MB/s|OpenSSH MB/s|
---|---|---|---|---|---|
1|776|793|<--|832|578|
2|1343|1415|<--|1435|938|
3|1815|1878|<--|1877|1279|
4|2192|2205|<--|2056|1567|
8|3237|3287|<--|2493|2036|
Upload:
Stream|Baseline MB/s|Optimized MB/s|Balanced MB/s|OpenSSH MB/s|
---|---|---|---|---|
1|446|446|494|448|
2|616|623|646|650|
3|746|749|728|741|
4|833|832|788|858|
8|897|903|823|887|
Stream|Baseline MB/s|Devel MB/s|Optimized MB/s|Balanced MB/s|OpenSSH MB/s|
---|---|---|---|---|---|
1|528|545|<--|608|584|
2|872|849|<--|975|1019|
3|1121|1138|<--|1217|1412|
4|1367|1387|<--|1368|1755|
8|1733|1744|<--|1664|2510|
### Optimizations applied
- AES-CTR optimization of Go compiler for x86_64, there is a [patch](https://go-review.googlesource.com/c/go/+/51670) that hasn't been merged yet, you can apply it yourself.
- Use [minio/sha256-simd](https://github.com/minio/sha256-simd) to accelerate MAC (Message Authentication Code) computation. In this way the tested hardware will use `Intel SHA Extensions` for SHA256 computation. This will give a significant performance boost compared to `AVX2` extensions used with the Go's SHA256 implementation. This patch is now included in SFTPGo master branch.
```
diff --git a/go.mod b/go.mod
index f1b2caa..109e064 100644
--- a/go.mod
+++ b/go.mod
@@ -43,3 +43,5 @@ require (
)
replace github.com/eikenb/pipeat v0.0.0-20190316224601-fb1f3a9aa29f => github.com/drakkan/pipeat v0.0.0-20200123131427-11c048cfc0ec
+
+replace golang.org/x/crypto => github.com/drakkan/crypto v0.0.0-20200303175438-17ef3d252b1c
```
- A new allocator for `pkg/sftp` which greatly improve parallel loads. We are discussing about this patch with `pkg/sftp` maintainers [here](https://github.com/pkg/sftp/pull/344).
```
diff --git a/go.mod b/go.mod
index 109e064..4d67a47 100644
--- a/go.mod
+++ b/go.mod
@@ -45,3 +45,4 @@ require (
replace github.com/eikenb/pipeat v0.0.0-20190316224601-fb1f3a9aa29f => github.com/drakkan/pipeat v0.0.0-20200123131427-11c048cfc0ec
replace golang.org/x/crypto => github.com/drakkan/crypto v0.0.0-20200303175438-17ef3d252b1c
+replace github.com/pkg/sftp => github.com/drakkan/sftp v0.0.0-20200319122022-2fc68482d27f
```
### HAProxy configuration