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| author | Ludovic Courtès <ludo@gnu.org> | 2016-12-01 22:53:37 +0100 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2016-12-01 23:35:10 +0100 |
| commit | 9a8f9f84cc1672c45c2d204d9c234c932a8cb623 (patch) | |
| tree | e900669630be57c9f5eac6081b3b903afd674db9 /README | |
| parent | 0b72475301e20521e0dd9fc22881eaab4a7fe170 (diff) | |
| download | patches-9a8f9f84cc1672c45c2d204d9c234c932a8cb623.tar patches-9a8f9f84cc1672c45c2d204d9c234c932a8cb623.tar.gz | |
daemon: Buffer data sent to clients by the 'export-path' RPC.
Before that we'd have STDERR_WRITE round trips for very small amounts of
data, ranging from a few bytes for the metadata of nars to the size of
one file being exported.
With this change, something like:
guix archive --export /gnu/store/5rrsbaghh5ix1vjcicsl60gsxilhjnf2-coreutils-8.25 | dd of=/dev/null
reports a throughput of 35 MB/s instead of 25 MB/s before.
* nix/nix-daemon/nix-daemon.cc (TunnelSink): Inherit from 'BufferedSink'
rather than 'Sink'. Rename 'operator ()' to 'write'.
(performOp) <wopExportPath>: Add 'sink.flush' call.
Diffstat (limited to 'README')
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