8bad4b44f8
Introduced histogram metrics to track latency for Alternator's get and write batch operations. Added counters to record the number of items processed in each batch operation. Signed-off-by: Amnon Heiman <amnon@scylladb.com>
106 lines
6.4 KiB
C++
106 lines
6.4 KiB
C++
/*
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* Copyright 2019-present ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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#include "stats.hh"
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#include "utils/histogram_metrics_helper.hh"
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#include <seastar/core/metrics.hh>
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namespace alternator {
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const char* ALTERNATOR_METRICS = "alternator";
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stats::stats() : api_operations{} {
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// Register the
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seastar::metrics::label op("op");
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_metrics.add_group("alternator", {
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#define OPERATION(name, CamelCaseName) \
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seastar::metrics::make_total_operations("operation", api_operations.name, \
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seastar::metrics::description("number of operations via Alternator API"), {op(CamelCaseName)}).set_skip_when_empty(),
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#define OPERATION_LATENCY(name, CamelCaseName) \
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seastar::metrics::make_histogram("op_latency", \
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seastar::metrics::description("Latency histogram of an operation via Alternator API"), {op(CamelCaseName)}, [this]{return to_metrics_histogram(api_operations.name.histogram());}).aggregate({seastar::metrics::shard_label}).set_skip_when_empty(), \
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seastar::metrics::make_summary("op_latency_summary", \
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seastar::metrics::description("Latency summary of an operation via Alternator API"), [this]{return to_metrics_summary(api_operations.name.summary());})(op(CamelCaseName)).set_skip_when_empty(),
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OPERATION(batch_get_item, "BatchGetItem")
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OPERATION(batch_write_item, "BatchWriteItem")
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OPERATION(batch_get_item_batch_total, "BatchGetItemSize")
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OPERATION(batch_write_item_batch_total, "BatchWriteItemSize")
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OPERATION(create_backup, "CreateBackup")
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OPERATION(create_global_table, "CreateGlobalTable")
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OPERATION(create_table, "CreateTable")
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OPERATION(delete_backup, "DeleteBackup")
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OPERATION(delete_item, "DeleteItem")
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OPERATION(delete_table, "DeleteTable")
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OPERATION(describe_backup, "DescribeBackup")
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OPERATION(describe_continuous_backups, "DescribeContinuousBackups")
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OPERATION(describe_endpoints, "DescribeEndpoints")
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OPERATION(describe_global_table, "DescribeGlobalTable")
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OPERATION(describe_global_table_settings, "DescribeGlobalTableSettings")
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OPERATION(describe_limits, "DescribeLimits")
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OPERATION(describe_table, "DescribeTable")
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OPERATION(describe_time_to_live, "DescribeTimeToLive")
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OPERATION(get_item, "GetItem")
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OPERATION(list_backups, "ListBackups")
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OPERATION(list_global_tables, "ListGlobalTables")
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OPERATION(list_tables, "ListTables")
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OPERATION(list_tags_of_resource, "ListTagsOfResource")
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OPERATION(put_item, "PutItem")
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OPERATION(query, "Query")
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OPERATION(restore_table_from_backup, "RestoreTableFromBackup")
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OPERATION(restore_table_to_point_in_time, "RestoreTableToPointInTime")
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OPERATION(scan, "Scan")
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OPERATION(tag_resource, "TagResource")
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OPERATION(transact_get_items, "TransactGetItems")
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OPERATION(transact_write_items, "TransactWriteItems")
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OPERATION(untag_resource, "UntagResource")
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OPERATION(update_continuous_backups, "UpdateContinuousBackups")
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OPERATION(update_global_table, "UpdateGlobalTable")
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OPERATION(update_global_table_settings, "UpdateGlobalTableSettings")
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OPERATION(update_item, "UpdateItem")
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OPERATION(update_table, "UpdateTable")
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OPERATION(update_time_to_live, "UpdateTimeToLive")
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OPERATION_LATENCY(put_item_latency, "PutItem")
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OPERATION_LATENCY(get_item_latency, "GetItem")
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OPERATION_LATENCY(delete_item_latency, "DeleteItem")
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OPERATION_LATENCY(update_item_latency, "UpdateItem")
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OPERATION_LATENCY(batch_write_item_latency, "BatchWriteItem")
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OPERATION_LATENCY(batch_get_item_latency, "BatchGetItem")
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OPERATION(list_streams, "ListStreams")
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OPERATION(describe_stream, "DescribeStream")
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OPERATION(get_shard_iterator, "GetShardIterator")
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OPERATION(get_records, "GetRecords")
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OPERATION_LATENCY(get_records_latency, "GetRecords")
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});
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_metrics.add_group("alternator", {
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seastar::metrics::make_total_operations("unsupported_operations", unsupported_operations,
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seastar::metrics::description("number of unsupported operations via Alternator API")),
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seastar::metrics::make_total_operations("total_operations", total_operations,
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seastar::metrics::description("number of total operations via Alternator API")),
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seastar::metrics::make_total_operations("reads_before_write", reads_before_write,
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seastar::metrics::description("number of performed read-before-write operations")),
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seastar::metrics::make_total_operations("write_using_lwt", write_using_lwt,
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seastar::metrics::description("number of writes that used LWT")),
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seastar::metrics::make_total_operations("shard_bounce_for_lwt", shard_bounce_for_lwt,
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seastar::metrics::description("number writes that had to be bounced from this shard because of LWT requirements")),
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seastar::metrics::make_total_operations("requests_blocked_memory", requests_blocked_memory,
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seastar::metrics::description("Counts a number of requests blocked due to memory pressure.")),
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seastar::metrics::make_total_operations("requests_shed", requests_shed,
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seastar::metrics::description("Counts a number of requests shed due to overload.")),
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seastar::metrics::make_total_operations("filtered_rows_read_total", cql_stats.filtered_rows_read_total,
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seastar::metrics::description("number of rows read during filtering operations")),
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seastar::metrics::make_total_operations("filtered_rows_matched_total", cql_stats.filtered_rows_matched_total,
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seastar::metrics::description("number of rows read and matched during filtering operations")),
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seastar::metrics::make_total_operations("filtered_rows_dropped_total", [this] { return cql_stats.filtered_rows_read_total - cql_stats.filtered_rows_matched_total; },
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seastar::metrics::description("number of rows read and dropped during filtering operations")),
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});
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}
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}
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