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https://issues.apache.org/jira/browse/TS-3261?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14259541#comment-14259541
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Susan Hinrichs commented on TS-3261:
------------------------------------
[~sudheerv] I agree that this could be an erroneously reported leak. I'm just
noting that the Valgrind report snippet seems to be reporting where the leaked
member is being allocated. Not where the leaked member is being lost. In that
reading, the place where it would be overwritten would be in SSL_set_rbio, not
in make_ssl_conneciton.
In any case, I think we are agreeing on what is going on at this point.
> possible slow leak in v5.2.0
> ----------------------------
>
> Key: TS-3261
> URL: https://issues.apache.org/jira/browse/TS-3261
> Project: Traffic Server
> Issue Type: Bug
> Components: Core
> Affects Versions: 5.2.0
> Reporter: Sudheer Vinukonda
> Assignee: Susan Hinrichs
> Priority: Critical
> Fix For: 5.3.0
>
>
> After fixing the iobuffer leak in TS-3257, the iobuffers seem stable on
> v5.2.0, but, there still seems to be a slow memory leak. The RES memory from
> top shows 15g after running v5.2.0 in prod for more than 3 days, whereas the
> corresponding v5.0 host shows 10g after running for more than a week.
> Below is the dump of iobuffers between the v5.2.0 and v5.0 host - as
> expected, most iobufs are lower than v5.0 host (since, the v5.0 host been
> running longer), except the 32k buffer (iobuf[8]). But, the leak doesn't seem
> to be explained by the difference in 32k buffers either, as it is not high
> enough to explain the 5g difference in total memory.
> v5.2.0 host:
> {code}
> allocated | in-use | type size | free list name
> --------------------|--------------------|------------|----------------------------------
> 67108864 | 25165824 | 2097152 |
> memory/ioBufAllocator[14]
> 2013265920 | 1825570816 | 1048576 |
> memory/ioBufAllocator[13]
> 620756992 | 549978112 | 524288 |
> memory/ioBufAllocator[12]
> 780140544 | 593494016 | 262144 |
> memory/ioBufAllocator[11]
> 742391808 | 574619648 | 131072 |
> memory/ioBufAllocator[10]
> 901775360 | 735576064 | 65536 |
> memory/ioBufAllocator[9]
> 1189085184 | 1093304320 | 32768 |
> memory/ioBufAllocator[8]
> 474480640 | 348733440 | 16384 |
> memory/ioBufAllocator[7]
> 269221888 | 211320832 | 8192 |
> memory/ioBufAllocator[6]
> 156762112 | 142999552 | 4096 |
> memory/ioBufAllocator[5]
> 0 | 0 | 2048 |
> memory/ioBufAllocator[4]
> 131072 | 0 | 1024 |
> memory/ioBufAllocator[3]
> 65536 | 0 | 512 |
> memory/ioBufAllocator[2]
> 65536 | 256 | 256 |
> memory/ioBufAllocator[1]
> 16384 | 0 | 128 |
> memory/ioBufAllocator[0]
> {code}
> v.5.0.0 host:
> {code}
> allocated | in-use | type size | free list name
> --------------------|--------------------|------------|----------------------------------
> 134217728 | 31457280 | 2097152 |
> memory/ioBufAllocator[14]
> 2147483648 | 1843396608 | 1048576 |
> memory/ioBufAllocator[13]
> 788529152 | 608174080 | 524288 |
> memory/ioBufAllocator[12]
> 897581056 | 680525824 | 262144 |
> memory/ioBufAllocator[11]
> 796917760 | 660471808 | 131072 |
> memory/ioBufAllocator[10]
> 985661440 | 818479104 | 65536 |
> memory/ioBufAllocator[9]
> 873463808 | 677969920 | 32768 |
> memory/ioBufAllocator[8]
> 544735232 | 404439040 | 16384 |
> memory/ioBufAllocator[7]
> 310902784 | 237887488 | 8192 |
> memory/ioBufAllocator[6]
> 160956416 | 115515392 | 4096 |
> memory/ioBufAllocator[5]
> 0 | 0 | 2048 |
> memory/ioBufAllocator[4]
> 131072 | 2048 | 1024 |
> memory/ioBufAllocator[3]
> 65536 | 0 | 512 |
> memory/ioBufAllocator[2]
> 98304 | 50688 | 256 |
> memory/ioBufAllocator[1]
> {code}
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