crimson: Enable tcmalloc when using seastar #46062

markhpc · 2022-04-28T04:05:05Z

classic-osds have always caused significant memory fragmentation
when using the libc memory allocator due to the way that Ceph
tends to utilize memory. In recent testing, crimson-osd was found
to use 25-27GB of RAM with the stock 3GB bluestore cache settings
(osd_memory_target is only used when tcmalloc is available). Upon
further testing, it was found that the classic OSD is even worse,
using between 32-33GB of RAM after a 5 minute 4K sequential
write test when using libc malloc.

The good news is that it appears that crimson-osd is able to use
tcmalloc for alienstore without significant modification. Better
still, it drastically reduces memory usage. In the same test that
resulted in 25GB RSS memory usage for crimson-osd with libc malloc,
a tcmalloc linked version took around 9GB (with an 8GB
osd_memory_target). Since we do not yet (afaik) expose classic OSD
debugging in crimson it is tough to tell why we are still a little
over, but it's clear that for alienstore we are going to need to
use tcmalloc as we do in classic.

Signed-off-by: Mark Nelson mnelson@redhat.com

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markhpc · 2022-04-29T16:08:49Z

src/tcmalloc.cc:332] Attempt to free invalid pointer 0x6040000001d0

Previously this has been caused by libtcmalloc not supporting aligned_alloc:

https://bugzilla.redhat.com/show_bug.cgi?id=1569391
https://tracker.ceph.com/issues/23653

Seeing now if I can reproduce this on my centos stream test setup.

markhpc · 2022-04-29T17:15:00Z

These are the tests that failed make check in jenkins due to attempting to free invalid pointers:

projectroot.src.test.crimson.unittest_seastar_alienstore_thread_pool
projectroot.src.test.crimson.seastore.unittest_object_data_handler
projectroot.src.test.crimson.seastore.unittest_collection_manager

Running ninja check locally with libtcmalloc.so.4.5.3, these all appear to pass:

226/249 Test #226: unittest-seastar-alienstore-thread-pool ... Passed 0.11 sec
238/249 Test #238: unittest-object-data-handler .............. Passed 8.76 sec
239/249 Test #239: unittest-collection-manager ............... Passed 4.16 sec

There were a couple of other failures, but I do not know if they are specifically related to this PR:

The following tests FAILED:
33 - smoke.sh (Failed)
172 - mgr-dashboard-smoke.sh (Failed)
187 - safe-to-destroy.sh (Failed)
225 - unittest-seastar-messenger (SEGFAULT)
232 - unittest-seastar-messenger-thrash (Subprocess aborted)

markhpc · 2022-04-29T17:16:23Z

jenkins test make check

rzarzynski · 2022-05-01T19:02:41Z

jenkins retest this please

rzarzynski · 2022-05-01T19:52:10Z

The following tests FAILED:
	231 - unittest-seastar-alienstore-thread-pool (Child aborted)
	243 - unittest-object-data-handler (Child aborted)
	244 - unittest-collection-manager (Child aborted)

rzarzynski · 2022-05-01T19:56:57Z

jenkins retest this please

rzarzynski · 2022-05-01T21:21:09Z

jenkins retest this please

src/crimson/CMakeLists.txt

tchaikov · 2022-05-02T02:00:23Z

src/perfglue/CMakeLists.txt

@@ -1,4 +1,4 @@
-if(ALLOCATOR STREQUAL "tcmalloc" AND NOT WITH_SEASTAR)
+if(ALLOCATOR STREQUAL "tcmalloc")


@liu-chunmei does the reason why we disabled heap profiler still hold ?

see 028159e .

tchaikov · 2022-05-03T01:36:01Z

FWIW, I just recompiled without this PR applied using: ./do_cmake.sh -DCMAKE_BUILD_TYPE=RelWithDebInfo -DWITH_SEASTAR=ON

and neither ceph-osd nor crimson-osd are linked against tcmalloc, but radosgw is.

that's scaring. it deserves a tracker ticket.

dismissed due to test failure.

tchaikov · 2022-05-03T01:38:34Z

        Start 231: unittest-seastar-alienstore-thread-pool
179/277 Test #231: unittest-seastar-alienstore-thread-pool ...Child aborted***Exception:   0.02 sec
src/tcmalloc.cc:332] Attempt to free invalid pointer 0x6040000001d0

we'd need to address this failure first.

tchaikov · 2022-05-03T06:03:15Z

FWIW, I just recompiled without this PR applied using: ./do_cmake.sh -DCMAKE_BUILD_TYPE=RelWithDebInfo -DWITH_SEASTAR=ON
and neither ceph-osd nor crimson-osd are linked against tcmalloc, but radosgw is.

that's scaring. it deserves a tracker ticket.

should be addressed by #46103

github-actions · 2023-02-28T01:29:14Z

This pull request has been automatically marked as stale because it has not had any activity for 60 days. It will be closed if no further activity occurs for another 30 days.
If you are a maintainer or core committer, please follow-up on this pull request to identify what steps should be taken by the author to move this proposed change forward.
If you are the author of this pull request, thank you for your proposed contribution. If you believe this change is still appropriate, please ensure that any feedback has been addressed and ask for a code review.

rzarzynski

Need to port the Valgrind's suppression rules to ASan:

rzarzynski@teuthology:/a/rzarzynski-2023-03-12_13:57:50-crimson-rados-main-distro-crimson-smithi$ less 7204125/teuthology.log
...
2023-03-12T14:22:11.448 DEBUG:teuthology.orchestra.run.smithi027:> sudo MALLOC_CHECK_=3 adjust-ulimits ceph-coverage /home/ubuntu/cephtest/archive/coverage ceph-osd --no-mon-config --cluster ceph --mkfs --mkkey 
-i 0 --monmap /home/ubuntu/cephtest/ceph.monmap
...
023-03-12T14:22:17.159 INFO:teuthology.orchestra.run.smithi027.stderr:=================================================================
2023-03-12T14:22:17.159 INFO:teuthology.orchestra.run.smithi027.stderr:==104216==ERROR: LeakSanitizer: detected memory leaks
2023-03-12T14:22:17.159 INFO:teuthology.orchestra.run.smithi027.stderr:
2023-03-12T14:22:17.159 INFO:teuthology.orchestra.run.smithi027.stderr:Direct leak of 8 byte(s) in 1 object(s) allocated from:
2023-03-12T14:22:17.159 INFO:teuthology.orchestra.run.smithi027.stderr:    #0 0x7fa2ec22d307 in operator new(unsigned long) (/lib64/libasan.so.6+0xb6307)
2023-03-12T14:22:17.160 INFO:teuthology.orchestra.run.smithi027.stderr:    #1 0x7fa2eb769ddd in InitModule() [clone .part.4] (/lib64/libtcmalloc.so.4+0x2eddd)
2023-03-12T14:22:17.160 INFO:teuthology.orchestra.run.smithi027.stderr:
2023-03-12T14:22:17.160 INFO:teuthology.orchestra.run.smithi027.stderr:SUMMARY: AddressSanitizer: 8 byte(s) leaked in 1 allocation(s).
2023-03-12T14:22:17.226 DEBUG:teuthology.orchestra.run:got remote process result: 1
2023-03-12T14:22:17.227 DEBUG:teuthology.orchestra.run.smithi027:> sudo MALLOC_CHECK_=3 adjust-ulimits ceph-coverage /home/ubuntu/cephtest/archive/coverage ceph-osd --cluster ceph --mkfs --mkkey -i 0 --monmap /home/ubuntu/cephtest/ceph.monmap
...
2023-03-12T14:22:18.136 INFO:teuthology.orchestra.run.smithi027.stderr:INFO  2023-03-12 14:22:18,136 [shard 0] ms - [0x61100002c3c0 client.?(temp_mon_client) - >> mon.? v2:172.21.15.27:3300/0] protocol CONNECTING execute_connecting fault, going to WAIT io_stat(io_state=delay, in_seq=0, out_seq=0, out_pending_msgs_size=1, out_sent_msgs_size=0, need_ack=0, need_keepalive=0, need_keepalive_ack=0) -- Connection refused
2023-03-12T14:22:18.136 INFO:teuthology.orchestra.run.smithi027.stderr:WARN  2023-03-12 14:22:18,136 [shard 0] ms - [0x61100002c3c0 client.?(temp_mon_client) - >> mon.? v2:172.21.15.27:3300/0] waiting 0.2 seconds ...
2023-03-12T14:22:18.336 INFO:teuthology.orchestra.run.smithi027.stderr:INFO  2023-03-12 14:22:18,336 [shard 0] ms - [0x61100002c3c0 client.?(temp_mon_client) - >> mon.? v2:172.21.15.27:3300/0] execute_wait(): going to CONNECTING
2023-03-12T14:22:18.337 INFO:teuthology.orchestra.run.smithi027.stderr:INFO  2023-03-12 14:22:18,337 [shard 0] ms - [0x61100002c3c0 client.?(temp_mon_client) - >> mon.? v2:172.21.15.27:3300/0] protocol CONNECTING execute_connecting fault, going to WAIT io_stat(io_state=delay, in_seq=0, out_seq=0, out_pending_msgs_size=1, out_sent_msgs_size=0, need_ack=0, need_keepalive=0, need_keepalive_ack=0) -- Connection refused
2023-03-12T14:22:18.337 INFO:teuthology.orchestra.run.smithi027.stderr:WARN  2023-03-12 14:22:18,337 [shard 0] ms - [0x61100002c3c0 client.?(temp_mon_client) - >> mon.? v2:172.21.15.27:3300/0] waiting 0.4 seconds ...
...
2023-03-13T02:06:06.399 DEBUG:teuthology.exit:Got signal 15; running 1 handler...
2023-03-13T02:06:06.401 DEBUG:teuthology.task.console_log:Killing console logger for smithi027
2023-03-13T02:06:06.402 DEBUG:teuthology.task.console_log:Killing console logger for smithi139

Otherwise --mkfs won't create object store data turning entire crimson-rados runs red: http://pulpito.front.sepia.ceph.com:80/rzarzynski-2023-03-12_13:57:50-crimson-rados-main-distro-crimson-smithi/.

cbodley · 2023-03-16T15:17:35Z

fyi, i recently added a qa/lsan.supp file for leak suppressions in #50385

rzarzynski · 2023-03-16T15:20:42Z

To avoid touching teuthology.git for the sake of suppression file distribution among nodes, I'm working on ceph/ceph-ci@44b621c.

rzarzynski · 2023-03-16T15:25:58Z

Perhaps we could unify (thinking about generating .cc from the .supp).

rzarzynski · 2023-03-20T20:29:07Z

This PR needs #50598 as a dependency.

markhpc · 2023-03-23T14:18:29Z

@rzarzynski yeah, let's get #50598 merged. We can combine this if you want or just approve that one first. I'm ok with whatever.

github-actions · 2023-05-22T15:01:39Z

This pull request has been automatically marked as stale because it has not had any activity for 60 days. It will be closed if no further activity occurs for another 30 days.
If you are a maintainer or core committer, please follow-up on this pull request to identify what steps should be taken by the author to move this proposed change forward.
If you are the author of this pull request, thank you for your proposed contribution. If you believe this change is still appropriate, please ensure that any feedback has been addressed and ask for a code review.

rzarzynski · 2023-05-23T10:59:44Z

@markhpc: #50598 is in!

markhpc · 2023-05-25T14:27:12Z

Huzzah! @rzarzynski IS there anything we need for this PR to merge now that #50598 is in? (this PR is blocked on your review)

rzarzynski

Approving as the (not so explicit) dependency got merged.

rzarzynski · 2023-05-25T15:28:00Z

CC: @Matan-B.

Matan-B · 2023-05-30T08:06:40Z

jenkins test make check

Matan-B

LGTM

New unrelated asan failure - https://tracker.ceph.com/issues/61504.

athanatos · 2023-05-30T20:35:51Z

jenkins retest this please

athanatos · 2023-05-30T23:16:25Z

Hrm, we're seeing address sanitizer errors in make check:

==2692420==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 45 byte(s) in 1 object(s) allocated from:
    #0 0x5641d4ffaedd in operator new(unsigned long) (/home/jenkins-build/build/workspace/ceph-pull-requests/build/bin/unittest-object-data-handler+0x7c01edd) (BuildId: 7aeb00a388469f4de54fedaaceb47fc006ce2906)
    #1 0x5641d50d46de in __gnu_cxx::new_allocator<char>::allocate(unsigned long, void const*) /usr/bin/../lib/gcc/x86_64-linux-gnu/11/../../../../include/c++/11/ext/new_allocator.h:127:27
    #2 0x5641d50d456a in std::allocator<char>::allocate(unsigned long) /usr/bin/../lib/gcc/x86_64-linux-gnu/11/../../../../include/c++/11/bits/allocator.h:185:32
    #3 0x5641d50d456a in std::allocator_traits<std::allocator<char> >::allocate(std::allocator<char>&, unsigned long) /usr/bin/../lib/gcc/x86_64-linux-gnu/11/../../../../include/c++/11/bits/alloc_traits.h:464:20
    #4 0x5641d50d3fcf in std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_create(unsigned long&, unsigned long) /usr/bin/../lib/gcc/x86_64-linux-gnu/11/../../../../include/c++/11/bits/basic_string.tcc:153:14
    #5 0x5641d51384f3 in std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_mutate(unsigned long, unsigned long, char const*, unsigned long) /usr/bin/../lib/gcc/x86_64-linux-gnu/11/../../../../include/c++/11/bits/basic_string.tcc:307:21
    #6 0x5641d5264dba in std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_append(char const*, unsigned long) /usr/bin/../lib/gcc/x86_64-linux-gnu/11/../../../../include/c++/11/bits/basic_string.tcc:395:8
    #7 0x7fb22a6426f0 in MallocExtension::Initialize() (/lib/x86_64-linux-gnu/libtcmalloc.so.4+0x2a6f0) (BuildId: eeef3d1257388a806e122398dbce3157ee568ef4)

SUMMARY: AddressSanitizer: 45 byte(s) leaked in 1 allocation(s).

Presumably similar to the false positive from above?

athanatos

See asan make check issue above.

Matan-B · 2023-05-31T12:17:50Z

@rzarzynski had a good hypothesis that it's perfglue that's pulling tcmalloc in. I just recompiled and indeed, we don't need this at all. If we simply remove "AND NOT WITH_SEASTAR" from perfglue's CMakeLists.txt we will link tcmalloc in both crimson and classic OSD when "WITH_SEASTAR=ON" is used.

Since the implicit change to perfglue's CMakeLists.txt result in different allocator selected I pushed #51851 to able to identify which one is being used.

Matan-B · 2023-06-01T15:00:26Z

Hrm, we're seeing address sanitizer errors in make check:

==2692420==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 45 byte(s) in 1 object(s) allocated from:
    #0 0x5641d4ffaedd in operator new(unsigned long) (/home/jenkins-build/build/workspace/ceph-pull-requests/build/bin/unittest-object-data-handler+0x7c01edd) (BuildId: 7aeb00a388469f4de54fedaaceb47fc006ce2906)
    #1 0x5641d50d46de in __gnu_cxx::new_allocator<char>::allocate(unsigned long, void const*) /usr/bin/../lib/gcc/x86_64-linux-gnu/11/../../../../include/c++/11/ext/new_allocator.h:127:27
    #2 0x5641d50d456a in std::allocator<char>::allocate(unsigned long) /usr/bin/../lib/gcc/x86_64-linux-gnu/11/../../../../include/c++/11/bits/allocator.h:185:32
    #3 0x5641d50d456a in std::allocator_traits<std::allocator<char> >::allocate(std::allocator<char>&, unsigned long) /usr/bin/../lib/gcc/x86_64-linux-gnu/11/../../../../include/c++/11/bits/alloc_traits.h:464:20
    #4 0x5641d50d3fcf in std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_create(unsigned long&, unsigned long) /usr/bin/../lib/gcc/x86_64-linux-gnu/11/../../../../include/c++/11/bits/basic_string.tcc:153:14
    #5 0x5641d51384f3 in std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_mutate(unsigned long, unsigned long, char const*, unsigned long) /usr/bin/../lib/gcc/x86_64-linux-gnu/11/../../../../include/c++/11/bits/basic_string.tcc:307:21
    #6 0x5641d5264dba in std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_append(char const*, unsigned long) /usr/bin/../lib/gcc/x86_64-linux-gnu/11/../../../../include/c++/11/bits/basic_string.tcc:395:8
    #7 0x7fb22a6426f0 in MallocExtension::Initialize() (/lib/x86_64-linux-gnu/libtcmalloc.so.4+0x2a6f0) (BuildId: eeef3d1257388a806e122398dbce3157ee568ef4)

SUMMARY: AddressSanitizer: 45 byte(s) leaked in 1 allocation(s).

Presumably similar to the false positive from above?

Similar suppression from lsan.supp:

# from perfglue/heap_profiler.cc
# gperftools allocates a singleton and never frees it
leak:^MallocExtension::Register

I think we should add MallocExtension::Initialize() to the embedded suppressions same way #50598 did. I will push a follow up PR.

Edit: Looks like this is gperf's alloc https://github.com/gperftools/gperftools/blob/master/src/tcmalloc.cc#L1146

…n using seastar" This reverts commit 380bc6d. Signed-off-by: Matan Breizman <mbreizma@redhat.com>

classic-osds have always caused significant memory fragmentation when using the libc memory allocator due to the way that Ceph tends to utilize memory. In recent testing, crimson-osd was found to use 25-27GB of RAM with the stock 3GB bluestore cache settings (osd_memory_target is only used when tcmalloc is available). Upon further testing, it was found that the classic OSD is even worse, using between 32-33GB of RAM after a 5 minute 4K sequential write test when using libc malloc. The good news is that it appears that crimson-osd is able to use tcmalloc for alienstore without significant modification. Better still, it drastically reduces memory usage. In the same test that resulted in 25GB RSS memory usage for crimson-osd with libc malloc, a tcmalloc linked version took around 9GB (with an 8GB osd_memory_target). Since we do not yet (afaik) expose classic OSD debugging in crimson it is tough to tell why we are still a little over, but it's clear that for alienstore we are going to need to use tcmalloc as we do in classic. Signed-off-by: Mark Nelson <mnelson@redhat.com>

Matan-B · 2023-06-06T14:59:08Z

Rebased and reverted the commit from #51875. (no changes, solely for accurate commit history)

markhpc added performance crimson labels Apr 28, 2022

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CMakeLists.txt: increase verbosity for selected allocator #51851

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crimson/osd/lsan_suppressions.cc: Add MallocExtension::Initialize() #51875

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Revert "[CHERRY-PICKED FOR TESTING ONLY] crimson: Enable tcmalloc whe…

96c6c26

…n using seastar" This reverts commit 380bc6d. Signed-off-by: Matan Breizman <mbreizma@redhat.com>

Matan-B force-pushed the wip-crimson-tcmalloc branch from 9f31ad7 to d884a45 Compare June 6, 2023 14:56

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reef: crimson: Enable tcmalloc when using seastar #54105

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		@@ -1,4 +1,4 @@
		if(ALLOCATOR STREQUAL "tcmalloc" AND NOT WITH_SEASTAR)
		if(ALLOCATOR STREQUAL "tcmalloc")

crimson: Enable tcmalloc when using seastar #46062

crimson: Enable tcmalloc when using seastar #46062

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markhpc commented May 25, 2023 •

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athanatos commented May 30, 2023 •

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Matan-B commented Jun 1, 2023 •

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