Re: Bluestore + erasure coding memory usage

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Okay, I left it for 3h and it seemed to actually stabilise at around
2.3G: http://ix.io/1DEK

This was only after disabling other services on the system however.
Generally this much RAM isn't available to Ceph (hence the OOM
previously).

On Tue, Nov 8, 2016 at 9:00 AM, Mark Nelson <mnelson@xxxxxxxxxx> wrote:
> It should be running much slower through valgrind so probably won't
> accumulate very quickly.  That was the problem with the earlier trace, there
> wasn't enough memory used yet to really get us out of the weeds. If it's
> still accumulating quickly, try to wait until the OSD is up to 4+GB RSS if
> you can.  I usually kill the valgrind/osd process with SIGTERM to make sure
> the output is preserved.  Not sure what will happen with OOM killer as I
> haven't let it get that far before killing.
>
> Mark
>
> On 11/08/2016 10:37 AM, bobobo1618@xxxxxxxxx wrote:
>>
>> Unfortunately I don't think overnight is possible. The OOM will kill it
>> in hours, if not minutes. Will the output be preserved/usable if the
>> process is uncleanly terminated?
>>
>>
>> On 8 Nov 2016 08:33, "Mark Nelson" <mnelson@xxxxxxxxxx
>> <mailto:mnelson@xxxxxxxxxx>> wrote:
>>
>>     Heya,
>>
>>     Sorry got distracted with other stuff yesterday.  Any chance you
>>     could run this for longer?  It's tough to tell what's going on from
>>     this run unfortunately.  Maybe overnight if possible.
>>
>>     Thanks!
>>     Mark
>>
>>
>>
>>     On 11/08/2016 01:10 AM, bobobo1618@xxxxxxxxx
>>     <mailto:bobobo1618@xxxxxxxxx> wrote:
>>
>>         Just bumping this and CCing directly since I foolishly broke the
>>         threading on my reply.
>>
>>
>>         On 4 Nov. 2016 8:40 pm, "bobobo1618@xxxxxxxxx
>>         <mailto:bobobo1618@xxxxxxxxx>
>>         <mailto:bobobo1618@xxxxxxxxx <mailto:bobobo1618@xxxxxxxxx>>"
>>         <bobobo1618@xxxxxxxxx <mailto:bobobo1618@xxxxxxxxx>
>>
>>         <mailto:bobobo1618@xxxxxxxxx <mailto:bobobo1618@xxxxxxxxx>>>
>> wrote:
>>
>>             > Then you can view the output data with ms_print or with
>>             massif-visualizer.  This may help narrow down where in the
>>         code we
>>             are using the memory.
>>
>>             Done! I've dumped the output from ms_print here:
>>         http://ix.io/1CrS
>>
>>             It seems most of the memory comes from here:
>>
>>             92.78% (998,248,799B) (heap allocation functions)
>>         malloc/new/new[],
>>             --alloc-fns, etc.
>>             ->46.63% (501,656,678B) 0xD38936:
>>             ceph::buffer::create_aligned(unsigned int, unsigned int) (in
>>             /usr/bin/ceph-osd)
>>             | ->45.07% (484,867,174B) 0xDAFED9:
>>         AsyncConnection::process() (in
>>             /usr/bin/ceph-osd)
>>             | | ->45.07% (484,867,174B) 0xC410EB:
>>         EventCenter::process_events(int)
>>             (in /usr/bin/ceph-osd)
>>             | |   ->45.07% (484,867,174B) 0xC45210: ??? (in
>>         /usr/bin/ceph-osd)
>>             | |     ->45.07% (484,867,174B) 0xC6FA31D:
>>             execute_native_thread_routine (thread.cc:83)
>>             | |       ->45.07% (484,867,174B) 0xBE06452: start_thread (in
>>             /usr/lib/libpthread-2.24.so <http://libpthread-2.24.so>
>>         <http://libpthread-2.24.so>)
>>             | |         ->45.07% (484,867,174B) 0xCFCA7DD: clone (in
>>             /usr/lib/libc-2.24.so <http://libc-2.24.so>
>>         <http://libc-2.24.so>)
>>             | |
>>             | ->01.56% (16,789,504B) in 6 places, all below massif's
>>         threshold
>>             (1.00%)
>>             |
>>             ->22.70% (244,179,072B) 0x9C9807: BitMapZone::init(long,
>>         long, bool)
>>             (in /usr/bin/ceph-osd)
>>             | ->22.70% (244,179,072B) 0x9CACED:
>>         BitMapAreaLeaf::init(long, long,
>>             bool) (in /usr/bin/ceph-osd)
>>             |   ->22.70% (244,179,072B) 0x9CAE88:
>>             BitMapAreaLeaf::BitMapAreaLeaf(long, long, bool) (in
>>             /usr/bin/ceph-osd)
>>             |     ->22.67% (243,924,992B) 0x9CAF79:
>>         BitMapAreaIN::init(long, long,
>>             bool) (in /usr/bin/ceph-osd)
>>             |     | ->12.46% (134,086,656B) 0x9CAFBE:
>>         BitMapAreaIN::init(long,
>>             long, bool) (in /usr/bin/ceph-osd)
>>             |     | | ->12.46% (134,086,656B) 0x9CB237:
>>             BitAllocator::init_check(long, long, bmap_alloc_mode, bool,
>>         bool) (in
>>             /usr/bin/ceph-osd)
>>             |     | |   ->12.46% (134,086,656B) 0x9CB431:
>>             BitAllocator::BitAllocator(long, long, bmap_alloc_mode,
>>         bool) (in
>>             /usr/bin/ceph-osd)
>>             |     | |     ->12.46% (134,086,656B) 0x9C5C32:
>>             BitMapAllocator::BitMapAllocator(long, long) (in
>>         /usr/bin/ceph-osd)
>>             |     | |       ->12.46% (134,086,656B) 0x968FF1:
>>             Allocator::create(std::__cxx11::basic_string<char,
>>             std::char_traits<char>, std::allocator<char> >, long, long)
>> (in
>>             /usr/bin/ceph-osd)
>>             |     | |         ->12.46% (134,086,656B) 0x87F65C:
>>             BlueStore::_open_alloc() (in /usr/bin/ceph-osd)
>>             |     | |           ->12.46% (134,086,656B) 0x8D8CDD:
>>             BlueStore::mount() (in /usr/bin/ceph-osd)
>>             |     | |             ->12.46% (134,086,656B) 0x4C15EA:
>>         OSD::init()
>>             (in /usr/bin/ceph-osd)
>>             |     | |               ->12.46% (134,086,656B) 0x40854C:
>>         main (in
>>             /usr/bin/ceph-osd)
>>             |     | |
>>             |     | ->10.21% (109,838,336B) 0x9CB00B:
>>         BitMapAreaIN::init(long,
>>             long, bool) (in /usr/bin/ceph-osd)
>>             |     |   ->10.21% (109,838,336B) 0x9CB237:
>>             BitAllocator::init_check(long, long, bmap_alloc_mode, bool,
>>         bool) (in
>>             /usr/bin/ceph-osd)
>>             |     |     ->10.21% (109,838,336B) 0x9CB431:
>>             BitAllocator::BitAllocator(long, long, bmap_alloc_mode,
>>         bool) (in
>>             /usr/bin/ceph-osd)
>>             |     |       ->10.21% (109,838,336B) 0x9C5C32:
>>             BitMapAllocator::BitMapAllocator(long, long) (in
>>         /usr/bin/ceph-osd)
>>             |     |         ->10.21% (109,838,336B) 0x968FF1:
>>             Allocator::create(std::__cxx11::basic_string<char,
>>             std::char_traits<char>, std::allocator<char> >, long, long)
>> (in
>>             /usr/bin/ceph-osd)
>>             |     |           ->10.21% (109,838,336B) 0x87F65C:
>>             BlueStore::_open_alloc() (in /usr/bin/ceph-osd)
>>             |     |             ->10.21% (109,838,336B) 0x8D8CDD:
>>             BlueStore::mount() (in /usr/bin/ceph-osd)
>>             |     |               ->10.21% (109,838,336B) 0x4C15EA:
>>         OSD::init()
>>             (in /usr/bin/ceph-osd)
>>             |     |                 ->10.21% (109,838,336B) 0x40854C:
>>         main (in
>>             /usr/bin/ceph-osd)
>>             |     |
>>             |     ->00.02% (254,080B) in 1+ places, all below ms_print's
>>             threshold (01.00%)
>>             |
>>             ->12.77% (137,350,728B) 0x9CACD8: BitMapAreaLeaf::init(long,
>>         long,
>>             bool) (in /usr/bin/ceph-osd)
>>             | ->12.77% (137,350,728B) 0x9CAE88:
>>             BitMapAreaLeaf::BitMapAreaLeaf(long, long, bool) (in
>>             /usr/bin/ceph-osd)
>>             |   ->12.75% (137,207,808B) 0x9CAF79:
>>         BitMapAreaIN::init(long, long,
>>             bool) (in /usr/bin/ceph-osd)
>>             |   | ->07.01% (75,423,744B) 0x9CAFBE:
>>         BitMapAreaIN::init(long, long,
>>             bool) (in /usr/bin/ceph-osd)
>>             |   | | ->07.01% (75,423,744B) 0x9CB237:
>>             BitAllocator::init_check(long, long, bmap_alloc_mode, bool,
>>         bool) (in
>>             /usr/bin/ceph-osd)
>>             |   | |   ->07.01% (75,423,744B) 0x9CB431:
>>             BitAllocator::BitAllocator(long, long, bmap_alloc_mode,
>>         bool) (in
>>             /usr/bin/ceph-osd)
>>             |   | |     ->07.01% (75,423,744B) 0x9C5C32:
>>             BitMapAllocator::BitMapAllocator(long, long) (in
>>         /usr/bin/ceph-osd)
>>             |   | |       ->07.01% (75,423,744B) 0x968FF1:
>>             Allocator::create(std::__cxx11::basic_string<char,
>>             std::char_traits<char>, std::allocator<char> >, long, long)
>> (in
>>             /usr/bin/ceph-osd)
>>             |   | |         ->07.01% (75,423,744B) 0x87F65C:
>>             BlueStore::_open_alloc() (in /usr/bin/ceph-osd)
>>             |   | |           ->07.01% (75,423,744B) 0x8D8CDD:
>>         BlueStore::mount()
>>             (in /usr/bin/ceph-osd)
>>             |   | |             ->07.01% (75,423,744B) 0x4C15EA:
>>         OSD::init() (in
>>             /usr/bin/ceph-osd)
>>             |   | |               ->07.01% (75,423,744B) 0x40854C: main
>> (in
>>             /usr/bin/ceph-osd)
>>
>
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