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${ noResults }
Josh Bleecher Snyder
93284209bc
logtail/filch: preallocate a scanner buffer
Scanning log lines is a frequent source of allocations. Pre-allocate a re-usable buffer. This still doesn't help when there are giant log lines. Those will still be problematic from an iOS memory perspective. For more on that, see https://github.com/tailscale/corp/issues/2423. (For those who cannot follow that link, it is a discussion of particular problematic types of log lines for particular categories of customers. The "categories of customers" part is the reason that it is a private issue.) There is also a latent bug here. If we ever encounter a log line longer than bufio.MaxScanTokenSize, then bufio.Scan will return an error, and we'll truncate the file and discard the rest of the log. That's not good, but bufio.MaxScanTokenSize is really big, so it probably doesn't matter much in practice now. Unfortunately, it does prevent us from easily capping the potential memory usage here, on pain of losing log entries. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com> |
3 years ago | |
|---|---|---|
| .. | ||
| backoff | backoff: update to Go style, document a bit, make 30s explicit | 4 years ago |
| example | logtail, logpolicy: remove an unidiomatic use of an interface | 4 years ago |
| filch | logtail/filch: preallocate a scanner buffer | 3 years ago |
| .gitignore | Move Linux client & common packages into a public repo. | 4 years ago |
| README.md | Move Linux client & common packages into a public repo. | 4 years ago |
| api.md | Move Linux client & common packages into a public repo. | 4 years ago |
| buffer.go | logtail: rename the unused CheckLogs to DrainLogs | 4 years ago |
| id.go | logtail: reduce PublicID.UnmarshalText from 2 allocs to 0 | 3 years ago |
| id_test.go | logtail: add ParsePublicID that doesn't allocate | 4 years ago |
| logtail.go | logtail: fix typo in comment | 3 years ago |
| logtail_test.go | logtail: reduce PublicID.UnmarshalText from 2 allocs to 0 | 3 years ago |
README.md
Tailscale Logs Service
This github repository contains libraries, documentation, and examples for working with the public API of the tailscale logs service.
For a very quick introduction to the core features, read the API docs and peruse the logs reprocessing example.
For more information, write to info@tailscale.io.