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    <title>MongoDB Jira</title>
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    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-22268] Enable gperftools on Linux s390x</title>
                <link>https://jira.mongodb.org/browse/SERVER-22268</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;gperftools-2.2 can be built (at least the tcmalloc portion) on Linux s390x. These changes are not in upstream gperftools yet.&lt;/p&gt;

&lt;p&gt;1. gperftools does not have a stack unwinder for s390x. Add HAVE_DECL_BACKTRACE to CPPDEFINES.&lt;/p&gt;

&lt;p&gt;2. Define CACHELINE_ALIGNED in src/base/basictypes.h.&lt;/p&gt;

&lt;p&gt;3. Implement a cycle clock in src/base/cycleclock.h.&lt;/p&gt;

&lt;p&gt;4. Adapt src/base/linux_syscall_support.h for s390x.&lt;/p&gt;

&lt;p&gt;5. Fix a memcmp bug in src/base/sysinfo.cc, around line 124. This code assumes that both *p and name are at least namelen long, which is not always true.&lt;/p&gt;

&lt;p&gt;6. Implement do_mmap64 for s390x in src/malloc_hook_mmap_linux.h.&lt;/p&gt;

&lt;p&gt;With the above changes, MongoDB can be built without the --allocator=system option.&lt;/p&gt;</description>
                <environment></environment>
        <key id="260019">SERVER-22268</key>
            <summary>Enable gperftools on Linux s390x</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="9">Done</resolution>
                                        <assignee username="mark.benvenuto@mongodb.com">Mark Benvenuto</assignee>
                                    <reporter username="bryanpkc">Bryan Chan</reporter>
                        <labels>
                    </labels>
                <created>Thu, 21 Jan 2016 21:20:31 +0000</created>
                <updated>Tue, 26 Apr 2016 23:11:45 +0000</updated>
                            <resolved>Thu, 14 Apr 2016 14:01:50 +0000</resolved>
                                                    <fixVersion>3.3.5</fixVersion>
                                    <component>Portability</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="1150577" author="acm" created="Thu, 21 Jan 2016 21:41:51 +0000"  >&lt;p&gt;Please note that we are hoping to upgrade gperftools to 2.4 (or 2.6 if they release that soon). Have the above changes been applied in the upstream gperftools 2.4 or master branches? If not, I&apos;d encourage you to get them merged into gperftools master.&lt;/p&gt;</comment>
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