#15495 closed bug (fixed)
app_server runs out of memory while running webkit test suite
| Reported by: | pulkomandy | Owned by: | waddlesplash |
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| Priority: | normal | Milestone: | R1/beta2 |
| Component: | System/libroot.so | Version: | R1/Development |
| Keywords: | Cc: | ||
| Blocked By: | Blocking: | ||
| Platform: | All |
Description
Since the switch to rpmalloc, it is not possible to run the webkit testsuite through. App_server will eventually run out of memory and crash. Attached is an area_waste report (with the tool modified t dump just one team, since that's more useful on 32bit systems where virtual address space runs out first)
Attachments (1)
Change History (11)
by , 5 years ago
| Attachment: | app_server_waste.txt added |
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comment:1 by , 5 years ago
comment:2 by , 5 years ago
The rpmalloc dev is asking for more feedback from us, so I think that should be a first step: https://github.com/mjansson/rpmalloc/issues/117
comment:3 by , 5 years ago
We can do that, but the ticket itself was about wasting 100kB for every super-aligned allocation, which is still an issue.
comment:5 by , 5 years ago
That is the ticket for that issue...?
The "real issue", in looking into this more, is one that I'm not sure is really solvable under rpmalloc's design. As mjansson noted in that ticket, rpmalloc kind of assumes that virtual address space use != physical memory reservation, which of course Haiku does so assume, and with good reason. It also seems to be designed for "high-performance", i.e. 64-bit only where lots of virtual address space waste is fine, and Haiku needs to support 32-bit for a while more (and on non-x86, eventually..)
musl, it seems, is in the process of writing a new allocator, which may be a better fit for us: https://github.com/richfelker/mallocng-draft
Original mailing list post: https://www.openwall.com/lists/musl/2019/11/28/1
More comments on the design: https://www.openwall.com/lists/musl/2019/11/29/2 -- note "- compatibility with 32-bit address space", and "- elimination of heap size explosion in multithreaded apps", which are problems that most modern allocators, rpmalloc included, seem to have.
comment:7 by , 5 years ago
| Blocking: | 15359 added |
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comment:8 by , 5 years ago
| Blocking: | 15359 removed |
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comment:9 by , 5 years ago
| Resolution: | → fixed |
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| Status: | assigned → closed |
rpmalloc is now just gone, so this is "fixed".
comment:10 by , 5 years ago
| Milestone: | Unscheduled → R1/beta2 |
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Assign tickets with status=closed and resolution=fixed within the R1/beta2 development window to the R1/beta2 Milestone
Fixed for now by reverting to hoard2, and confirmed the webkit testsuite runs through without problems in that setup. So we need to fix rpmalloc or switch to yet another allocator.