prometheus

Commit Graph

Author	SHA1	Message	Date
Julius Volz	0712d738d1	Allow alternative "by"-clause position in grammar. In addition to the existing by-clause syntax: sum(<expression>) by (<labels>) [keeping_extra] ...this allows the following new syntax: sum by (<labels>) [keeping_extra] (<expression>) Both orderings may be used in a single expression. It is up to the users to establish guidelines around their usage. Change-Id: Iba10c9cc5fb6ac62edfcf246d281473e82467992	10 years ago
Julius Volz	0e48c18bbf	Allow omitting the metric name in queries. This allows the following expression syntaxes for selecting timeseries: foo (already valid before) foo{} (already valid before) {job="prometheus"} (new, select all timeseries for job "prometheus") Omitting both the metric name and any label matchers ("" or "{}") will still yield a syntax error. To get all timeseries, you could do: {__name__=~"."} or, without relying on knowledge about __metric__: {job=~"."} Change-Id: Ifee000b9ac0184ef6ced18411069c7f2699a2dda	10 years ago
Bjoern Rabenstein	096fa0f8b2	Squash a number of TODOs. - Staleness delta is no a proper function parameter and not replicated from package ast. - Named type 'chunks' replaced by explicit '[]chunk' to avoid confusion. - For the same reason, replaced 'chunkDescs' by '[]*chunkDescs'. - Verified that math.Modf is not a speed enhancement over conversion (actually 5x slower). - Renamed firstTimeField, lastTimeField into chunkFirstTime and chunkLastTime. - Verified unpin() is sufficiently goroutine-safe. - Decided not to update archivedFingerprintToTimeRange upon series truncation and added a rationale why. Change-Id: I863b8d785e5ad9f71eb63e229845eacf1bed8534	10 years ago
Bjoern Rabenstein	b3ed9aa7a2	Clean up start-up and shut-down. Change-Id: Idff4bbb0a15a9f879bfbb3da5b1025179cab5e2c	10 years ago
Bjoern Rabenstein	38fc24d0ed	Fix targetpool_test.go and other tests. Change-Id: I91a4dd1d39e01f174e1aaae653ce1ed7aecaa624	10 years ago
Julius Volz	7f5d3c2c29	Fix and improve the fp locker. Benchmark: $ go test -bench 'Fingerprint' -test.run 'Fingerprint' -test.cpu=1,2,4 OLD BenchmarkFingerprintLockerParallel 500000 3618 ns/op BenchmarkFingerprintLockerParallel-2 100000 12257 ns/op BenchmarkFingerprintLockerParallel-4 500000 10164 ns/op BenchmarkFingerprintLockerSerial 10000000 283 ns/op BenchmarkFingerprintLockerSerial-2 10000000 284 ns/op BenchmarkFingerprintLockerSerial-4 10000000 288 ns/op NEW BenchmarkFingerprintLockerParallel 1000000 1018 ns/op BenchmarkFingerprintLockerParallel-2 1000000 1164 ns/op BenchmarkFingerprintLockerParallel-4 2000000 910 ns/op BenchmarkFingerprintLockerSerial 50000000 56.0 ns/op BenchmarkFingerprintLockerSerial-2 50000000 47.9 ns/op BenchmarkFingerprintLockerSerial-4 50000000 54.5 ns/op Change-Id: I3c65a43822840e7e64c3c3cfe759e1de51272581	10 years ago
Julius Volz	358f97791d	Minor cleanups. Change-Id: Ia8685d8439a421fe2143d9ec7120d5bb5ab88d78	10 years ago
Bjoern Rabenstein	f5f9f3514a	Major code cleanup. - Make it go-vet and golint clean. - Add comments, TODOs, etc. Change-Id: If1392d96f3d5b4cdde597b10c8dff1769fcfabe2	10 years ago
Julius Volz	e7ed39c9a6	Initial experimental snapshot of next-gen storage. Change-Id: Ifb8709960dbedd1d9f5efd88cdd359ee9fa9d26d	10 years ago
Julius Volz	85497e3f38	Add function to drop common labels in a vector. This fixes https://github.com/prometheus/prometheus/issues/384. Change-Id: I2973c4baeb8a4618ec3875fb11c6fcf5d111784b	10 years ago
Julius Volz	3fdb74e571	Add more topk() / bottomk() tests. Test what happens if k > number of input elements. Change-Id: Ie724b850939e297ebf085f0a5a3522e9cfcc6534	10 years ago
Julius Volz	c582ae73c2	Implement topk() and bottomk() functions. To achieve O(log n * k) runtime, this uses a heap to track the current bottom-k or top-k elements while iterating over the full set of available elements. It would be possible to reuse more code between topk and bottomk, but I decided for some more duplication for the sake of clarity. This fixes https://github.com/prometheus/prometheus/issues/399 Change-Id: I7487ddaadbe7acb22ca2cf2283ba6e7915f2b336	10 years ago
Bjoern Rabenstein	1909686789	Make metrics exported by the Prometheus server itself more consistent. - Always spell out the time unit (e.g. milliseconds instead of ms). - Remove "_total" from the names of metrics that are not counters. - Make use of the "Namespace" and "Subsystem" fields in the options. - Removed the "capacity" facet from all metrics about channels/queues. These are all fixed via command line flags and will never change during the runtime of a process. Also, they should not be part of the same metric family. I have added separate metrics for the capacity of queues as convenience. (They will never change and are only set once.) - I left "metric_disk_latency_microseconds" unchanged, although that metric measures the latency of the storage device, even if it is not a spinning disk. "SSD" is read by many as "solid state disk", so it's not too far off. (It should be "solid state drive", of course, but "metric_drive_latency_microseconds" is probably confusing.) - Brian suggested to not mix "failure" and "success" outcome in the same metric family (distinguished by labels). For now, I left it as it is. We are touching some bigger issue here, especially as other parts in the Prometheus ecosystem are following the same principle. We still need to come to terms here and then change things consistently everywhere. Change-Id: If799458b450d18f78500f05990301c12525197d3	10 years ago
Julius Volz	00b9489f1c	Fix time() behavior. time() should return the timestamp for which the query is executed, not the actual current time. Change-Id: I430a45cabad7785cd58f95b1028a71dff4c87710	10 years ago
Julius Volz	c5984f1818	Add abs() and over-time aggregation functions. This implements aggregation functions over time as request in https://github.com/prometheus/prometheus/issues/383. Change-Id: Ifd69b850de8cfdf6e7a6c0e042056fa4c672410e	10 years ago
Brian Brazil	f525ca5d9e	Let consoles get graph links from experssions. Rename ConsoleLinkFromExpression, as we now have consoles. Change-Id: I7ed2c9c83863adb390b51121dd9736845f7bcdfc	10 years ago
Bjoern Rabenstein	8956faeccb	Migrate to new client_golang. This change will only be submitted when the new client_golang has been moved to the new version. Change-Id: Ifceb59333072a08286a8ac910709a8ba2e3a1581	10 years ago
Brian Brazil	960ede66dc	Use html/template for console templates and add template libary support. Add a function to bypass the new auto-escaping. Add a function to workaround go's templates only allowing passing in one argument. Change-Id: Id7aa3f95e7c227692dc22108388b1d9b1e2eec99	10 years ago
Brian Brazil	e041c0cd46	Add console and alert templates with access to all data. Move rulemanager to it's own package to break cicrular dependency. Make NewTestTieredStorage available to tests, remove duplication. Change-Id: I33b321245a44aa727bfc3614a7c9ae5005b34e03	11 years ago
Bjoern Rabenstein	ca6a4fccef	Weed out our homegrown test.Tester. The Go stdlib has testing.TB now, which fulfills the exact same purpose. Change-Id: I0db9c73400e208ca376b932a02b7e3402234b87c	11 years ago
Julius Volz	6297a405f2	Do not indent API JSON responses. In one example response, this reduced the uncompressed size by 25% and the gzipped size by 11%. Change-Id: Ie80d44253124b9f8601b8ef9fc978e92dacff523	11 years ago
Julius Volz	01f652cb4c	Separate storage implementation from interfaces. This was initially motivated by wanting to distribute the rule checker tool under `tools/rule_checker`. However, this was not possible without also distributing the LevelDB dynamic libraries because the tool transitively depended on Levigo: rule checker -> query layer -> tiered storage layer -> leveldb This change separates external storage interfaces from the implementation (tiered storage, leveldb storage, memory storage) by putting them into separate packages: - storage/metric: public, implementation-agnostic interfaces - storage/metric/tiered: tiered storage implementation, including memory and LevelDB storage. I initially also considered splitting up the implementation into separate packages for tiered storage, memory storage, and LevelDB storage, but these are currently so intertwined that it would be another major project in itself. The query layers and most other parts of Prometheus now have notion of the storage implementation anymore and just use whatever implementation they get passed in via interfaces. The rule_checker is now a static binary :) Change-Id: I793bbf631a8648ca31790e7e772ecf9c2b92f7a0	11 years ago
Julius Volz	d411a7d810	Allow reversing vector and scalar arguments in binops. This allows putting a scalar as the first argument of a binary operator in which the second argument is a vector: <scalar> <binop> <vector> For example, 1 / http_requests_total ...will output a vector in which every sample value is 1 divided by the respective input vector element. This even works for filter binary operators now: 1 == http_requests_total Returns a vector with all values set to 1 for every element in http_requests_total whose initial value was 1. Note: For filter binary operators, the resulting values are always taken from the left-hand-side of the operation, no matter whether the scalar or the vector argument is the left-hand-side. That is, 1 != http_requests_total ...will set all result vector sample values to 1, although these are exactly the sample elements that were != 1 in the input vector. If you want to just filter elements without changing their sample values, you still need to do: http_requests_total != 1 The new filter form is a bit exotic, and so probably won't be used often. But it was easier to implement it than disallow it completely or change its behavior. Change-Id: Idd083f2bd3a1219ba1560cf4ace42f5b82e797a5	11 years ago
Julius Volz	c7c0b33d0b	Add regex-matching support for labels. There are four label-matching ops for selecting timeseries now: - Equal: = - NotEqual: != - RegexMatch: =~ - RegexNoMatch: !~ Instead of looking up labels by a simple clientmodel.LabelSet (basically an equals op for every key/value pair in the set), timeseries fingerprint selection is now done via a list of metric.LabelMatchers. Change-Id: I510a83f761198e80946146770ebb64e4abc3bb96	11 years ago
Bjoern Rabenstein	0a65b691cc	Disallow ":" in identifiers, but still allow it in metric names. Change-Id: Iace925ab1b71a360bd63357e87f68e727f7afbcb	11 years ago
Julius Volz	86fc13a52e	Convert metric.Values to slice of values. The initial impetus for this was that it made unmarshalling sample values much faster. Other relevant benchmark changes in ns/op: Benchmark old new speedup ================================================================== BenchmarkMarshal 179170 127996 1.4x BenchmarkUnmarshal 404984 132186 3.1x BenchmarkMemoryGetValueAtTime 57801 50050 1.2x BenchmarkMemoryGetBoundaryValues 64496 53194 1.2x BenchmarkMemoryGetRangeValues 66585 54065 1.2x BenchmarkStreamAdd 45.0 75.3 0.6x BenchmarkAppendSample1 1157 1587 0.7x BenchmarkAppendSample10 4090 4284 0.95x BenchmarkAppendSample100 45660 44066 1.0x BenchmarkAppendSample1000 579084 582380 1.0x BenchmarkMemoryAppendRepeatingValues 22796594 22005502 1.0x Overall, this gives us good speedups in the areas where they matter most: decoding values from disk and accessing the memory storage (which is also used for views). Some of the smaller append examples take minimally longer, but the cost seems to get amortized over larger appends, so I'm not worried about these. Also, we're currently not bottlenecked on the write path and have plenty of other optimizations available in that area if it becomes necessary. Memory allocations during appends don't change measurably at all. Change-Id: I7dc7394edea09506976765551f35b138518db9e8	11 years ago
Julius Volz	bc6ee6611e	Rename persistence_adapter.go -> view_adapter.go Change-Id: Ib45081393b734531d2f85a02f46e87930aab3273	11 years ago
Julius Volz	3f226c9724	Rename {Scalar,Vector}Literal to {Scalar,Vector}Selector. Change-Id: Ie92301f47f5f49f30b3a62c365e377108982b080	11 years ago
Bjoern Rabenstein	682cf6fc51	Simplify QueryAnalizer.Visit(). Change-Id: I628582a1903b7273e78921e22a475f1dae5ebaae	11 years ago
Bjoern Rabenstein	fd63500ed3	Make rules/ast golint clean. Mostly, that means adding compliant doc strings to exported items. Also, remove 'go vet' warnings where possible. (Some are unfortunately not to avoid, arguably bugs in 'go vet'.) Change-Id: I2827b6dd317492864c1383c3de1ea9eac5a219bb	11 years ago
Björn Rabenstein	59febe771a	Merge "Minor code cleanups."	11 years ago
Julius Volz	c4adfc4f25	Minor code cleanups. Change-Id: Ib3729cf38b107b7f2186ccf410a745e0472e3630	11 years ago
Julius Volz	7e9ecaac3a	Add count_scalar() function. Change-Id: I63f09dd0479d0a6b016f5f857dd39dcbda56c7f9	11 years ago
Julius Volz	0378c2ca1f	Nonexistent labels in BY-clauses shouldn't propagate to result. This fixes bug 2. of https://github.com/prometheus/prometheus/issues/374 Change-Id: Ia4a13153616bafce5bf10597966b071434422d09	11 years ago
Julius Volz	6dc36d0c3e	Don't keep extra labels in aggregations by default. MIN/MAX/SUM/AVG/COUNT aggregations will now by default drop all labels that are not specifically part of a BY-clause, even if a label value is the same within all timeseries of an aggregation group. The old behavior of keeping extra labels may still be switched on by adding KEEPING_EXTRA to the end of an aggregation statement: sum(http_requests) by (job, method) keeping_extra I'm open to better syntax/naming suggestions. Change-Id: I21d3fe7af9e98552ce3dffa3ce7c0a4ba4c0b4a4	11 years ago
Julius Volz	20bfaf80ab	Merge "Display filename when encountering bad rule file."	11 years ago
Julius Volz	3bf3a555b2	Merge "add evalDuration histogram and ruleCount counter for rules"	11 years ago
Stuart Nelson	b75adfebad	add evalDuration histogram and ruleCount counter for rules Change-Id: I3508fe72526348d96b8158828388c3ac8d7c3fa9	11 years ago
Julius Volz	77a79d1fc0	Display filename when encountering bad rule file. Change-Id: I4729371be92c5659a6938145c5fde66771d7be22	11 years ago
Julius Volz	fb44580110	Cleanup/fix program termination sequence. Change-Id: I2bc58a2583fb079c9ef383cfc7a5e0fbe613f1cd	11 years ago
Julius Volz	740d448983	Use custom timestamp type for sample timestamps and related code. So far we've been using Go's native time.Time for anything related to sample timestamps. Since the range of time.Time is much bigger than what we need, this has created two problems: - there could be time.Time values which were out of the range/precision of the time type that we persist to disk, therefore causing incorrectly ordered keys. One bug caused by this was: https://github.com/prometheus/prometheus/issues/367 It would be good to use a timestamp type that's more closely aligned with what the underlying storage supports. - sizeof(time.Time) is 192, while Prometheus should be ok with a single 64-bit Unix timestamp (possibly even a 32-bit one). Since we store samples in large numbers, this seriously affects memory usage. Furthermore, copying/working with the data will be faster if it's smaller. MEMORY USAGE RESULTS Initial memory usage comparisons for a running Prometheus with 1 timeseries and 100,000 samples show roughly a 13% decrease in total (VIRT) memory usage. In my tests, this advantage for some reason decreased a bit the more samples the timeseries had (to 5-7% for millions of samples). This I can't fully explain, but perhaps garbage collection issues were involved. WHEN TO USE THE NEW TIMESTAMP TYPE The new clientmodel.Timestamp type should be used whenever time calculations are either directly or indirectly related to sample timestamps. For example: - the timestamp of a sample itself - all kinds of watermarks - anything that may become or is compared to a sample timestamp (like the timestamp passed into Target.Scrape()). When to still use time.Time: - for measuring durations/times not related to sample timestamps, like duration telemetry exporting, timers that indicate how frequently to execute some action, etc. NOTE ON OPERATOR OPTIMIZATION TESTS We don't use operator optimization code anymore, but it still lives in the code as dead code. It still has tests, but I couldn't get all of them to pass with the new timestamp format. I commented out the failing cases for now, but we should probably remove the dead code soon. I just didn't want to do that in the same change as this. Change-Id: I821787414b0debe85c9fffaeb57abd453727af0f	11 years ago
Julius Volz	c7daedc840	Merge "Add scalar() function."	11 years ago
Julius Volz	be8024e18c	Add scalar() function. Change-Id: I1d1183e926a18fc98c9e94bbb9a808a3fb313102	11 years ago
Julius Volz	93a8d03221	Merge "Add alert-expression console links to notifications."	11 years ago
Julius Volz	1eb1ceac8c	Add alert-expression console links to notifications. The ConsoleLinkForExpression() function now escapes console URLs in such a way that works both in emails and in HTML. Change-Id: I917bae0b526cbbac28ccd2a4ec3c5ac03ee4c647	11 years ago
Matt T. Proud	7db518d3a0	Abstract high watermark cache into standard LRU. Conflicts: storage/metric/memory.go storage/metric/tiered.go storage/metric/watermark.go Change-Id: Iab2aedbd8f83dc4ce633421bd4a55990fa026b85	11 years ago
Julius Volz	0003027dce	Add needed trailing spaces in logs.	11 years ago
Julius Volz	aa5d251f8d	Use github.com/golang/glog for all logging.	11 years ago
Julius Volz	3b970c5133	Add variable interpolation to notification messages. This includes required refactorings to enable replacing the http client (for testing) and moving the NotificationReq type definitions to the "notifications" package, so that this package doesn't need to depend on "rules" anymore and that it can instead use a representation of the required data which only includes the necessary fields.	11 years ago
Julius Volz	35ee2cd3cb	Add alertmanager notification support to Prometheus. Alert definitions now also have mandatory SUMMARY and DESCRIPTION fields that get sent along a firing alert to the alert manager.	11 years ago

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151 Commits (d215e013b78255152598475938302e42444614f6)