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    <title>Whamcloud Community JIRA</title>
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    <language>en-us</language>    <build-info>
        <version>9.4.14</version>
        <build-number>940014</build-number>
        <build-date>05-12-2023</build-date>
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<item>
            <title>[LU-13391] no print checksum speed for t10pi checksum in debug messages</title>
                <link>https://jira.whamcloud.com/browse/LU-13391</link>
                <project id="10000" key="LU">Lustre</project>
                    <description>&lt;p&gt;no print checksum speed for t10pi (e.g. t10ip512, t10ip4k, t10crc512, t10crc4k) in debug messages. It would print speed as well as crc32c, adler algorithms.&lt;/p&gt;
&lt;div class=&quot;preformatted panel&quot; style=&quot;border-width: 1px;&quot;&gt;&lt;div class=&quot;preformattedContent panelContent&quot;&gt;
&lt;pre&gt;00000400:02000000:4.0F:1585184902.841590:0:6755:0:(libcfs_cpu.c:1234:cfs_cpu_init()) HW NUMA nodes: 1, HW CPU cores: 32, npartitions: 8
00000001:01000000:4.0:1585184903.092471:0:6755:0:(linux-crypto.c:390:cfs_crypto_performance_test()) Crypto hash algorithm adler32 speed = 2715 MB/s
00000001:01000000:4.0:1585184903.342242:0:6755:0:(linux-crypto.c:390:cfs_crypto_performance_test()) Crypto hash algorithm crc32 speed = 13779 MB/s
00000001:01000000:4.0:1585184903.592260:0:6755:0:(linux-crypto.c:390:cfs_crypto_performance_test()) Crypto hash algorithm crc32c speed = 16427 MB/s
00000020:02000000:20.0F:1585184932.491506:0:6767:0:(class_obd.c:627:obdclass_init()) Lustre: Build Version: 2.12.3_ddn23
00000800:02000000:20.0:1585184932.526790:0:6767:0:(o2iblnd.c:2587:kiblnd_hdev_get_attr()) Using FastReg for registration
00000400:02000000:20.0:1585184932.538991:0:6767:0:(api-ni.c:2225:lnet_startup_lndni()) Added LNI 10.0.11.1@o2ib10 [8/512/0/180]
00000800:02000000:20.0:1585184932.539125:0:6767:0:(o2iblnd.c:2587:kiblnd_hdev_get_attr()) Using FastReg for registration
00000400:02000000:20.0:1585184932.550103:0:6767:0:(api-ni.c:2225:lnet_startup_lndni()) Added LNI 10.20.11.1@o2ib20 [8/512/0/180]
 &lt;/pre&gt;
&lt;/div&gt;&lt;/div&gt;</description>
                <environment>master</environment>
        <key id="58512">LU-13391</key>
            <summary>no print checksum speed for t10pi checksum in debug messages</summary>
                <type id="1" iconUrl="https://jira.whamcloud.com/secure/viewavatar?size=xsmall&amp;avatarId=11303&amp;avatarType=issuetype">Bug</type>
                                            <priority id="4" iconUrl="https://jira.whamcloud.com/images/icons/priorities/minor.svg">Minor</priority>
                        <status id="1" iconUrl="https://jira.whamcloud.com/images/icons/statuses/open.png" description="The issue is open and ready for the assignee to start work on it.">Open</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="wc-triage">WC Triage</assignee>
                                    <reporter username="sihara">Shuichi Ihara</reporter>
                        <labels>
                    </labels>
                <created>Thu, 26 Mar 2020 01:38:05 +0000</created>
                <updated>Thu, 26 Mar 2020 16:41:49 +0000</updated>
                                            <version>Lustre 2.14.0</version>
                                                        <due></due>
                            <votes>0</votes>
                                    <watches>2</watches>
                                                                            <comments>
                            <comment id="266138" author="lixi_wc" created="Thu, 26 Mar 2020 01:48:48 +0000"  >&lt;p&gt;The reason for this is, T10pi checksums are not normal checksum types like crc32c or alder. So the performance calculations are done in a different (but similar and comparable) way in a different place. The performance will only be calculated and printed when being used for the first time. It would be nice to print the performance together with other algorithms.&lt;/p&gt;

&lt;p&gt;Another more cirtical thing is, if T10PI checksum performance is much slower than other algorithms, a warning message should be printed. That is especially important for Lustre client which might be forced to use T10PI checksum even the performance is bad. An warning message would at least let the administrator notice the performance penalty.&lt;/p&gt;</comment>
                    </comments>
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                            <issuelinktype id="10011">
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                                                                <inwardlinks description="is related to">
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            <issuekey id="58527">LU-13393</issuekey>
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