depot - monorepo for the virus lounge

Age	Commit message (Collapse)	Author	Files	Lines
2012-08-27	Merge branch 'master' into no-manifests	Eelco Dolstra	1	-1/+1

2012-08-01	Drop the block count in the garbage collector	Eelco Dolstra	1	-1/+1

2012-07-31	Pass all --option flags to the daemon	Eelco Dolstra	1	-0/+10

2012-07-30	Refactor settings processing	Eelco Dolstra	1	-12/+12
	Put all Nix configuration flags in a Settings object.
2012-07-30	Whitespace	Eelco Dolstra	1	-21/+21

2012-07-18	Merge branch 'master' into no-manifests	Eelco Dolstra	1	-0/+12

2012-07-17	Add function queryPathFromHashPart()	Eelco Dolstra	1	-0/+12
	To implement binary caches efficiently, Hydra needs to be able to map the hash part of a store path (e.g. "gbg...zr7") to the full store path (e.g. "/nix/store/gbg...kzr7-subversion-1.7.5"). (The binary cache mechanism uses hash parts as a key for looking up store paths to ensure privacy.) However, doing a search in the Nix store for /nix/store/<hash>* is expensive since it requires reading the entire directory. queryPathFromHashPart() prevents this by doing a cheap database lookup.
2012-07-11	Replace hasSubstitutes() with querySubstitutablePaths()	Eelco Dolstra	1	-7/+17
	querySubstitutablePaths() takes a set of paths, so this greatly reduces daemon <-> client latency.
2012-07-11	Add a function queryValidPaths()	Eelco Dolstra	1	-0/+17
	queryValidPaths() combines multiple calls to isValidPath() in one. This matters when using the Nix daemon because it reduces latency. For instance, on "nix-env -qas \*" it reduces execution time from 5.7s to 4.7s (which is indistinguishable from the non-daemon case).
2012-07-11	Rename queryValidPaths() to queryAllValidPaths()	Eelco Dolstra	1	-2/+2

2012-07-11	Implement querySubstitutablePathInfos() in the daemon	Eelco Dolstra	1	-23/+37
	Also removed querySubstitutablePathInfo().
2012-07-06	download-from-binary-cache: parallelise fetching of NAR info files	Eelco Dolstra	1	-0/+13
	Getting substitute information using the binary cache substituter has non-trivial latency overhead. A package or NixOS system configuration can have hundreds of dependencies, and in the worst case (when the local info cache is empty) we have to do a separate HTTP request for each of these. If the ping time to the server is t, getting N info files will take tN seconds; e.g., with a ping time of 0.1s to nixos.org, sequentially downloading 1000 info files (a typical NixOS config) will take at least 100 seconds. To fix this problem, the binary cache substituter can now perform requests in parallel. This required changing the substituter interface to support a function querySubstitutablePathInfos() that queries multiple paths at the same time, and rewriting queryMissing() to take advantage of parallelism. (Due to local caching, parallelising queryMissing() is sufficient for most use cases, since it's almost always called before building a derivation and thus fills the local info cache.) For example, parallelism speeds up querying all 1056 paths in a particular NixOS system configuration from 116s to 2.6s. It works so well because the eccentricity of the top-level derivation in the dependency graph is only 9. So we only need 10 round-trips (when using an unlimited number of parallel connections) to get everything. Currently we do a maximum of 150 parallel connections to the server. Thus it's important that the binary cache server (e.g. nixos.org) has a high connection limit. Alternatively we could use HTTP pipelining, but WWW::Curl doesn't support it and libcurl has a hard-coded limit of 5 requests per pipeline.
2012-06-27	nix-store -r: do substitutions in parallel	Eelco Dolstra	1	-2/+2
	I.e. when multiple non-derivation arguments are passed to ‘nix-store -r’ to be substituted, do them in parallel.
2012-05-29	Reserve some disk space for the garbage collector	Eelco Dolstra	1	-2/+4
	We can't open a SQLite database if the disk is full. Since this prevents the garbage collector from running when it's most needed, we reserve some dummy space that we can free just before doing a garbage collection. This actually revives some old code from the Berkeley DB days. Fixes #27.
2012-04-30	* Add an option ‘build-use-substitutes’, which can be set to ‘false’	Eelco Dolstra	1	-0/+3
	to disable use of substitutes; i.e., force building from source. Fixes Nix/221.
2012-03-26	Remove the --max-links GC option	Eelco Dolstra	1	-1/+1
	We don't need this anymore now that current filesystems support more than 32,000 files in a directory.
2012-02-09	Use data() instead of c_str() where appropriate	Eelco Dolstra	1	-2/+2

2011-12-20	* Fix the build.	Eelco Dolstra	1	-1/+1

2011-12-16	* Sync with the trunk.	Eelco Dolstra	1	-23/+28

2011-12-16	* importPath() -> importPaths(). Because of buffering of the input	Eelco Dolstra	1	-20/+21
	stream it's now necessary for the daemon to process the entire sequence of exported paths, rather than letting the client do it.
2011-12-16	* Make the import operation through the daemon much more efficient	Eelco Dolstra	1	-3/+3
	(way fewer roundtrips) by allowing the client to send data in bigger chunks. * Some refactoring.
2011-12-15	* Refactoring: move sink/source buffering into separate classes.	Eelco Dolstra	1	-1/+1
	* Buffer the HashSink. This speeds up hashing a bit because it prevents lots of calls to the hash update functions (e.g. nix-hash went from 9.3s to 8.7s of user time on the closure of my /var/run/current-system).
2011-12-14	* Buffer writes in FdSink. This significantly reduces the number of	Eelco Dolstra	1	-0/+4
	system calls / context switches when dumping a NAR and in the worker protocol.
2011-12-01	* When doing "nix-store --add-fixed" without "--recursive" via the Nix	Eelco Dolstra	1	-1/+1
	daemon (which is an error), print a nicer error message than "Connection reset by peer" or "broken pipe". * In the daemon, log errors that occur during request parameter processing.
2011-11-06	Include all outputs of derivations in the closure of explicitly-passed ↵	Shea Levy	1	-0/+10
	derivation paths This required adding a queryOutputDerivationNames function in the store API
2011-04-19	* Handle error messages from the Nix worker containing the `%'	Eelco Dolstra	1	-1/+1
	character. (Nix/216)
2010-12-17	* Propagate the "100" exit status for failed builds through the Nix	Eelco Dolstra	1	-2/+5
	daemon.
2010-11-17	* Before a build, show the disk space that the downloaded store paths	Eelco Dolstra	1	-2/+2
	will approximately require.
2010-11-17	* Implement RemoteStore::queryPathInfo().	Eelco Dolstra	1	-1/+13

2010-11-16	* Store the size of a store path in the database (to be precise, the	Eelco Dolstra	1	-0/+6
	size of the NAR serialisation of the path, i.e., `nix-store --dump PATH'). This is useful for Hydra.
2010-08-30	* When using the build hook, distinguish between the stderr of the	Eelco Dolstra	1	-8/+1
	hook script proper, and the stdout/stderr of the builder. Only the latter should be saved in /nix/var/log/nix/drvs. * Allow the verbosity to be set through an option. * Added a flag --quiet to lower the verbosity level.
2010-08-24	* Sync with the trunk.	Eelco Dolstra	1	-0/+3

2010-08-12	* Make --cores work when building through the Nix daemon.	Eelco Dolstra	1	-0/+3

2010-08-04	* Sync with the trunk.	Eelco Dolstra	1	-0/+2

2010-06-24	Include <cstring> to ensure that strcpy(), strlen(), and memset() are declared.	Peter Simons	1	-0/+2
	An "using namespace std" was added locally in those functions that refer to names from <cstring>. That is not pretty, but it's a very portable solution, because strcpy() and friends will be found in both the 'std' and in the global namespace.
2010-05-04	* Allow unprivileged users to do `nix-store --clear-failed-paths' and	Eelco Dolstra	1	-0/+19
	`nix-store --query-failed-paths'.
2010-02-26	* Implement RemoteStore::queryValidPaths().	Eelco Dolstra	1	-1/+3

2010-02-25	* Implement RemoteStore::queryDerivationOutputs().	Eelco Dolstra	1	-1/+5

2010-02-22	* Get derivation outputs from the database instead of the .drv file,	Eelco Dolstra	1	-0/+6
	which requires more I/O.
2009-11-20	* Remove the --use-atime / --max-atime garbage collector flags. Many	Eelco Dolstra	1	-2/+3
	(Linux) machines no longer maintain the atime because it's too expensive, and on the machines where --use-atime is useful (like the buildfarm), reading the atimes on the entire Nix store takes way too much time to make it practical.
2009-04-21	* Use foreach in a lot of places.	Eelco Dolstra	1	-2/+1

2008-12-16	* Pass --use-atime / --max-atime to the daemon.	Eelco Dolstra	1	-0/+4

2008-12-11	* Open the connection to the daemon lazily (on demand) so that	Eelco Dolstra	1	-4/+33
	read-only operations (like nix-env -qa) work properly when the daemon isn't running.
2008-12-03	* Pass HashType values instead of strings.	Eelco Dolstra	1	-3/+3

2008-12-03	* Unify the treatment of sources copied to the store, and recursive	Eelco Dolstra	1	-4/+5
	SHA-256 outputs of fixed-output derivations. I.e. they now produce the same store path: $ nix-store --add x /nix/store/j2fq9qxvvxgqymvpszhs773ncci45xsj-x $ nix-store --add-fixed --recursive sha256 x /nix/store/j2fq9qxvvxgqymvpszhs773ncci45xsj-x the latter being the same as the path that a derivation derivation { name = "x"; outputHashAlgo = "sha256"; outputHashMode = "recursive"; outputHash = "..."; ... }; produces. This does change the output path for such fixed-output derivations. Fortunately they are quite rare. The most common use is fetchsvn calls with SHA-256 hashes. (There are a handful of those is Nixpkgs, mostly unstable development packages.) * Documented the computation of store paths (in store-api.cc).
2008-11-12	* Some somewhat ad hoc mechanism to allow the build farm to monitor	Eelco Dolstra	1	-1/+4
	build progress.
2008-11-11	* Pass the --no-build-output flag to the daemon.	Eelco Dolstra	1	-0/+2

2008-08-14	* Backward compatibility check to prevent nixos-rebuild from barfing	Eelco Dolstra	1	-0/+1
	when upgrading Nix.
2008-08-04	* querySubstitutablePathInfo: work properly when run via the daemon.	Eelco Dolstra	1	-1/+10
	* --dry-run: print the paths that we don't know how to build/substitute.
2008-08-02	* Make nix-env --dry-run print the paths to be substituted correctly	Eelco Dolstra	1	-6/+7
	again. (After the previous substituter mechanism refactoring I didn't update the code that obtains the references of substitutable paths.) This required some refactoring: the substituter programs are now kept running and receive/respond to info requests via stdin/stdout.