strace -p PID -ttt -T<div><br></div><div>Attach and get some timings. The simplest guess is that the system lacks memory to cache all the inodes</div><div>and thus has to hit disk (and more importantly take cluster locks) for the same inode repeatedly. The user</div>
<div>guide has a section in NOTES explaining this.</div><div><br></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Tue, Dec 4, 2012 at 8:54 AM, Amaury Francois <span dir="ltr"><<a href="mailto:amaury.francois@digora.com" target="_blank">amaury.francois@digora.com</a>></span> wrote:<br>
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<p class="MsoNormal">Hello,<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><span lang="EN-US">We are running OCFS2 1.8 and on a kernel UEK2. An ls on a directory containing approx. 1 million of files is very long (1H). The features we have activated on the filesystem are the following :
<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">[root@pa-oca-app10 ~]# debugfs.ocfs2 -R "stats" /dev/sdb1<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> Revision: 0.90<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> Mount Count: 0 Max Mount Count: 20<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> State: 0 Errors: 0<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> Check Interval: 0 Last Check: Fri Nov 30 19:30:17 2012<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> Creator OS: 0<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> Feature Compat: 3 backup-super strict-journal-super<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> Feature Incompat: 32592 sparse extended-slotmap inline-data metaecc xattr indexed-dirs refcount discontig-bg clusterinfo<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> Tunefs Incomplete: 0<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> Feature RO compat: 1 unwritten<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> Root Blknum: 5 System Dir Blknum: 6<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> First Cluster Group Blknum: 3<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> Block Size Bits: 12 Cluster Size Bits: 12<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> Max Node Slots: 8<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> Extended Attributes Inline Size: 256<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> Label: exchange2<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> UUID: 2375EAF4E4954C4ABB984BDE27AC93D5<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> Hash: 2880301520 (0xabade9d0)<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> DX Seeds: 1678175851 1096448356 79406012 (0x6406ee6b 0x415a7964 0x04bba3bc)<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> Cluster stack: o2cb<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> Cluster name: appcluster<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> Cluster flags: 1 Globalheartbeat<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> Inode: 2 Mode: 00 Generation: 3567595533 (0xd4a5300d)<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> FS Generation: 3567595533 (0xd4a5300d)<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> CRC32: 0c996202 ECC: 0819<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> Type: Unknown Attr: 0x0 Flags: Valid System Superblock<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> Dynamic Features: (0x0)<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> User: 0 (root) Group: 0 (root) Size: 0<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> Links: 0 Clusters: 5242635<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> ctime: 0x508eac6b 0x0 -- Mon Oct 29 17:18:51.0 2012<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> atime: 0x0 0x0 -- Thu Jan 1 01:00:00.0 1970<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> mtime: 0x508eac6b 0x0 -- Mon Oct 29 17:18:51.0 2012<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> dtime: 0x0 -- Thu Jan 1 01:00:00 1970<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> Refcount Block: 0<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> Last Extblk: 0 Orphan Slot: 0<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> Sub Alloc Slot: Global Sub Alloc Bit: 65535<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">May inline-data or xattr be the source of the problem ?<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Thank you. <u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
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<p class="MsoNormal"><b><span style="font-size:8.0pt;color:#559796"><u></u> <u></u></span></b></p>
<p class="MsoNormal"><b><span style="color:#559796">Amaury FRANCOIS</span></b><span style="font-size:14.0pt;color:#559796"> •</span><span style="font-size:14.0pt;color:#f0ab37">
</span><b><span style="color:#f0ab37">Ingénieur</span></b><span style="font-size:12.0pt;color:#559796"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#559796">Mobile <a href="tel:%2B33%20%280%296%2088%C2%A0%2012%2062%2054" value="+33688126254" target="_blank">+33 (0)6 88 12 62 54</a><u></u><u></u></span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt"><a href="mailto:amaury.francois@digora.com" target="_blank"><span style="color:blue">amaury.francois@digora.com</span></a><span style="color:#559796">
<u></u><u></u></span></span></b></p>
<p class="MsoNormal"><b><span style="font-size:6.0pt;color:#1f497d"><u></u> <u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-size:9.0pt">Siège Social – 66 rue du Marché Gare – 67200 STRASBOURG<u></u><u></u></span></b></p>
<p class="MsoNormal"><span style="font-size:9.0pt">Tél : 0 820 200 217 - <a href="tel:%2B33%20%280%293%2088%2010%2049%2020" value="+33388104920" target="_blank">+33 (0)3 88 10 49 20</a>
</span><span style="font-size:10.0pt"><u></u><u></u></span></p>
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<p class="MsoNormal"><span><u></u> <u></u></span></p>
<p class="MsoNormal"><u></u> <u></u></p>
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