michael goulish created DISPATCH-64:
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Summary: slow or sporadic memory leak
Key: DISPATCH-64
URL: https://issues.apache.org/jira/browse/DISPATCH-64
Project: Qpid Dispatch
Issue Type: Bug
Reporter: michael goulish
In long-term soak tests, I am seeing router mem grow by 1 megabyte every 4 or 5
minutes.
Test setup
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1. single router on one box
2. 10 senders, 10 receivers on separate box.
3. each client handles 100 unique addresses.
4. while test is running, I run 'top' in a loop to see router memory usage
(resident set size). I also run "qdstat -m" in a loop, to see router's report
on usage of various data structures.
5. clients all have single connection for duration of test.
6. clients start once at beginning of test and do not stop until end. No new
clients are started after the beginning.
7. no clients failed during the test.
8. no new addresses were added after test startup.
Observations
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1. During a 64 minute period which started at least 15 minutes after the
beginning of the test, memory usage (resident set size) as measured by 'top'
grew from 96 to 109 megabytes.
2. Some of the data types reported by 'qdstat -m' increased. Here is the
list: (using numbers from the 'total' column of qdstat report. )
qd_connection_t 832 --> 896
qd_hash_handle_t 1408 --> 1600
qd_hash_item_t 1408 --> 1600
qd_link_t 1536 --> 1664
qd_log_entry_t 1152 --> 1216
qd_message_content_t 10256 --> 10272
qd_parsed_field_t 448 --> 1024
qd_router_link_ref_t 1408 --> 1600
qd_router_link_t 1536 --> 1664
3. The data structures that increased did *not* increase smoothly. For
example, qd_hash_handle_t and qd_hash_item_t remained constant for 6 minutes
before increasing.
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