Ecosyste.ms: Awesome
An open API service indexing awesome lists of open source software.
https://github.com/no9/scintilla
Viewing Remenants of Level
https://github.com/no9/scintilla
Last synced: 5 days ago
JSON representation
Viewing Remenants of Level
- Host: GitHub
- URL: https://github.com/no9/scintilla
- Owner: No9
- License: mit
- Created: 2013-08-09T01:06:02.000Z (over 11 years ago)
- Default Branch: master
- Last Pushed: 2013-08-13T02:45:24.000Z (over 11 years ago)
- Last Synced: 2024-10-31T06:06:26.786Z (about 2 months ago)
- Language: JavaScript
- Size: 164 KB
- Stars: 0
- Watchers: 3
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# scintilla
A command line tool for monitoring leveldb instances using DTrace without the need for USDTs in leveldb.
## Prereqs
1. A system that supports DTrace based system. (Tested on Open Indiana and SmartOS Current Linux DTrace not supported)
2. node.js 0.10.x
3. awk
4. pgrep
## Install
```bash
$ npm install scintilla -g
```
## Usage
As root (or sudo)
To list available processes
```
# scintilla -l
```
To monitor a process
```
# scintilla -p XXXX
```
or
```bash
$ sudo scintilla -pid XXXX
```
Where XXXX is the process id of the node application hosting leveldb.
To monitor all currently running node processes and any new processes that are started.
```
# scintilla -a
```
Any node processes found that do not have a leveldb instance will display a warning message
## Output
From the repo directory run
```bash
$ node tests/mock.js
```
Then from another console
```
& sudo scintilla -a
```
Will produce the following output
```
monitor all
Attaching pid : 11880
Attach output : dtrace
Attach output : :
Attach output : script
Attach output : '
Attach output : ./scintilla.d
Attach output : ' matched
Attach output : 3
Attach output : probe
Attach output : s
CPU ID FUNCTION:NAME
0 63970 _ZN7leveldb10WriteBatch3PutERKNS_5SliceES3_:entry
PUT
Key: name
0 63973 _ZN7leveldb6DBImpl3GetERKNS_11ReadOptionsERKNS_5SliceEPSs:entry
************** END ***************
GET
Key: name
************** END ***************
0 63972 _ZN7leveldb10WriteBatch6DeleteERKNS_5SliceE:entry
DEL
Key: name
************** END ***************
```
## Notes
Currently only supports key string monitoring.