https://community.hpe.com/t5/operating-system-hp-ux/high-disk-usage-100/m-p/5803711#M481834 <P>Hi Jerry,</P><P>&nbsp;</P><P>Lot of missing information.&nbsp; The disk reports you're showing are cumulative. What is showing when you select IOByDisk? Are there individual disks that are heavily loaded while others are not?&nbsp; How does that compare to prior to migration to the vMax?&nbsp; I've done a couple of vMax migrations from DMX and not had any issues. What where you using before?&nbsp; How many HBA's?&nbsp; Using pvlinks or Power Path? If Power Path, is it licensed and the multipathing enabled to allow parallel traffic on the HBA's?</P><P>&nbsp;</P><P>If you have a X-Window server for your desk top, run the gpm version of Glance and look at the Disk Detail window of the busy disks. See what is showing for Queue Length and the Wait Queue Length table.</P> Fri, 14 Sep 2012 13:41:57 GMT Ken Grabowski 2012-09-14T13:41:57Z https://community.hpe.com/t5/operating-system-hp-ux/high-disk-usage-100/m-p/5803089#M481827 <P>After migrating to EMC VMAX storage we are getting high disk usage on HPUX 11.31 ia64&nbsp;servers, 100%.</P><P>Have been looking at glance and sar but do not know what is causing it. Found this diff on three of the servers affected but do not know if it plays a role here.</P><P>&nbsp;</P><P>kctune on server not 100% disk&nbsp;usage all the time. Does changing to auto help disk I/O:</P><P>&nbsp;</P><P>Tunable&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Current Usage&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Current Setting<BR />================================================================================<BR />filecache_max&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1421430784&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 10447491891</P><P>&nbsp;</P><P>filecache_max&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 10447491891&nbsp; 8%&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Imm (auto disabled)<BR />filecache_min&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 6529682432&nbsp; 5%&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Imm (auto disabled)</P><P>&nbsp;</P><P>Other two serverd that have constant 100% usage.</P><P>&nbsp;</P><P>Tunable&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Current Usage&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Current Setting<BR />================================================================================<BR />filecache_max&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2915418112&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2940880650</P><P>&nbsp;</P><P>filecache_max&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2940880650&nbsp; 1%&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Imm (auto disabled)<BR />filecache_min&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2940880650&nbsp; 1%&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Imm (auto disabled)</P><P>&nbsp;</P><P>&nbsp;</P><P>&nbsp;</P><P>Tunable&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Current Usage&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Current Setting<BR />=====================================================================================<BR />filecache_max&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1297690624&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1306779811</P><P>&nbsp;</P><P>filecache_max&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1306779811&nbsp; 1%&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Imm (auto disabled)<BR />filecache_min&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1306779811&nbsp; 1%&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Imm (auto disabled)</P><P>&nbsp;</P><P>&nbsp;</P><P>&nbsp;</P><P>&nbsp;</P><P>Also ran truss on high disk usage oracle processes&nbsp;listed&nbsp;in glance output and was getting this alot as syscalls:</P><P>&nbsp;</P><P>.</P><P>.</P><P>getrusage(RUSAGE_SELF, 0x9fffffffffff8d70)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; = 0</P><P>getrusage(RUSAGE_SELF, 0x9fffffffffff8d80)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; = 0</P><P>write(16, "0102\0\006\0\0\0\0\00601" \0\004".., 258)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; = 258</P><P>read(16, "\06 \0\006\0\0\0\0\003N aa\0\0\0".., 8208)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; = 54</P><P>getrusage(RUSAGE_SELF, 0x9fffffffffff9310)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; = 0</P><P>getrusage(RUSAGE_SELF, 0x9fffffffffff7280)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; = 0</P><P>getrusage(RUSAGE_SELF, 0x9fffffffffff72a0)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; = 0</P><P>getrusage(RUSAGE_SELF, 0x9fffffffffff72a0)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;= 0</P><P>getrusage(RUSAGE_SELF, 0x9fffffffffff84e0)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; = 0</P><P>getrusage(RUSAGE_SELF, 0x9fffffffffff84e0)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; = 0</P><P>getrusage(RUSAGE_SELF, 0x9fffffffffff8d70)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; = 0</P><P>getrusage(RUSAGE_SELF, 0x9fffffffffff8d80)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; = 0</P><P>write(16, "\0fd\0\006\0\0\0\0\00601" \0\004".., 253)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; = 253</P><P>read(16, "\06 \0\006\0\0\0\0\003N ab\0\0\0".., 8208)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; = 54</P><P>.</P><P>.</P><P>&nbsp;</P><P>&nbsp;</P><P>And in glance, why does the relatively good server that does not have 100% disk usage all the time&nbsp;have "na" listed&nbsp; for logical read/writes in glance and the other two bad servers do not have "na" listed?</P><P>&nbsp;</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; DISK REPORT&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Users=&nbsp;&nbsp;&nbsp; 1<BR />Req Type&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Requests&nbsp;&nbsp; %&nbsp;&nbsp;&nbsp;&nbsp; Rate&nbsp;&nbsp; Bytes&nbsp;&nbsp;&nbsp;&nbsp; **bleep** Req&nbsp;&nbsp;&nbsp; %&nbsp; **bleep** Rate **bleep** Byte<BR />--------------------------------------------------------------------------------<BR />Local&nbsp; Logl Rds&nbsp;&nbsp;&nbsp; na&nbsp;&nbsp;&nbsp; na&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; na&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; na&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; na&nbsp;&nbsp;&nbsp;&nbsp; na&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; na&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; na<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Logl Wts&nbsp;&nbsp;&nbsp; na&nbsp;&nbsp;&nbsp; na&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; na&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; na&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; na&nbsp;&nbsp;&nbsp;&nbsp; na&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; na&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; na<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Phys Rds&nbsp; 1424&nbsp; 92.5&nbsp; 1294.5&nbsp;&nbsp; 87.5mb&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1424&nbsp;&nbsp; 92.5&nbsp; 1294.5&nbsp;&nbsp;&nbsp; 87.5mb<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Phys Wts&nbsp;&nbsp; 116&nbsp;&nbsp; 7.5&nbsp;&nbsp; 105.4&nbsp;&nbsp;&nbsp; 9.2mb&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 116&nbsp;&nbsp;&nbsp; 7.5&nbsp;&nbsp; 105.4&nbsp;&nbsp;&nbsp;&nbsp; 9.2mb<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; User&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1536&nbsp; 99.7&nbsp; 1396.3&nbsp; 143.3mb&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1536&nbsp;&nbsp; 99.7&nbsp; 1396.3&nbsp;&nbsp; 143.3mb<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Virt Mem&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp; 0.0&nbsp;&nbsp;&nbsp;&nbsp; 0.0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0kb&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp;&nbsp; 0.0&nbsp;&nbsp;&nbsp;&nbsp; 0.0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0kb<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; System&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 4&nbsp;&nbsp; 0.3&nbsp;&nbsp;&nbsp;&nbsp; 3.6&nbsp;&nbsp;&nbsp;&nbsp; 32kb&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 4&nbsp;&nbsp;&nbsp; 0.3&nbsp;&nbsp;&nbsp;&nbsp; 3.6&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 32kb<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Raw&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp; 0.0&nbsp;&nbsp;&nbsp;&nbsp; 0.0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 8kb&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp;&nbsp; 0.0&nbsp;&nbsp;&nbsp;&nbsp; 0.0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 8kb<BR />Remote Logl Rds&nbsp;&nbsp;&nbsp; na&nbsp;&nbsp;&nbsp; na&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; na&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; na&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; na&nbsp;&nbsp;&nbsp;&nbsp; na&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; na&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; na<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Logl Wts&nbsp;&nbsp;&nbsp; na&nbsp;&nbsp;&nbsp; na&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; na&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; na&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; na&nbsp;&nbsp;&nbsp;&nbsp; na&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; na&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; na<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Phys Rds&nbsp;&nbsp;&nbsp;&nbsp; 3 100.0&nbsp;&nbsp;&nbsp;&nbsp; 1.8&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0kb&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3&nbsp; 100.0&nbsp;&nbsp;&nbsp;&nbsp; 1.8&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0kb<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Phys Wts&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp; 0.0&nbsp;&nbsp;&nbsp;&nbsp; 0.0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0kb&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp;&nbsp; 0.0&nbsp;&nbsp;&nbsp;&nbsp; 0.0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0kb</P><P>&nbsp;</P><P>&nbsp;</P><P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; DISK REPORT&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Users=&nbsp;&nbsp;&nbsp; 3<BR />Req Type&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Requests&nbsp;&nbsp; %&nbsp;&nbsp;&nbsp;&nbsp; Rate&nbsp;&nbsp; Bytes&nbsp;&nbsp;&nbsp;&nbsp; **bleep** Req&nbsp;&nbsp;&nbsp; %&nbsp; **bleep** Rate **bleep** Byte<BR />--------------------------------------------------------------------------------<BR />Local&nbsp; Logl Rds&nbsp; 2865&nbsp; 88.2&nbsp;&nbsp; 520.9&nbsp;&nbsp; 11.1mb&nbsp;&nbsp;&nbsp; 203405&nbsp;&nbsp; 90.8&nbsp; 1241.0&nbsp;&nbsp;&nbsp; 1.55gb<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Logl Wts&nbsp;&nbsp; 383&nbsp; 11.8&nbsp;&nbsp;&nbsp; 69.6&nbsp;&nbsp;&nbsp; 2.8mb&nbsp;&nbsp;&nbsp;&nbsp; 20725&nbsp;&nbsp;&nbsp; 9.2&nbsp;&nbsp; 126.4&nbsp;&nbsp; 207.6mb<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Phys Rds&nbsp; 1150&nbsp; 69.2&nbsp;&nbsp; 209.0&nbsp;&nbsp;&nbsp; 9.0mb&nbsp;&nbsp;&nbsp;&nbsp; 71183&nbsp;&nbsp; 76.7&nbsp;&nbsp; 435.1&nbsp;&nbsp;&nbsp; 1.47gb<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Phys Wts&nbsp;&nbsp; 513&nbsp; 30.8&nbsp;&nbsp;&nbsp; 93.2&nbsp;&nbsp;&nbsp; 3.8mb&nbsp;&nbsp;&nbsp;&nbsp; 21667&nbsp;&nbsp; 23.3&nbsp;&nbsp; 132.4&nbsp;&nbsp; 216.4mb<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; User&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1515&nbsp; 91.1&nbsp;&nbsp; 275.4&nbsp;&nbsp; 11.8mb&nbsp;&nbsp;&nbsp;&nbsp; 90708&nbsp;&nbsp; 97.7&nbsp;&nbsp; 554.4&nbsp;&nbsp;&nbsp; 1.68gb<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Virt Mem&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp; 0.0&nbsp;&nbsp;&nbsp;&nbsp; 0.0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0kb&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 114&nbsp;&nbsp;&nbsp; 0.1&nbsp;&nbsp;&nbsp;&nbsp; 0.6&nbsp;&nbsp;&nbsp;&nbsp; 892kb<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; System&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 80&nbsp;&nbsp; 4.8&nbsp;&nbsp;&nbsp; 14.5&nbsp;&nbsp;&nbsp; 424kb&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1357&nbsp;&nbsp;&nbsp; 1.5&nbsp;&nbsp;&nbsp;&nbsp; 8.2&nbsp;&nbsp;&nbsp;&nbsp; 4.3mb<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Raw&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 68&nbsp;&nbsp; 4.1&nbsp;&nbsp;&nbsp; 12.3&nbsp;&nbsp;&nbsp; 537kb&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 671&nbsp;&nbsp;&nbsp; 0.7&nbsp;&nbsp;&nbsp;&nbsp; 4.1&nbsp;&nbsp;&nbsp;&nbsp; 5.0mb<BR />Remote Logl Rds&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp; 0.0&nbsp;&nbsp;&nbsp;&nbsp; 0.0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0kb&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 6&nbsp;&nbsp; 54.5&nbsp;&nbsp;&nbsp;&nbsp; 0.0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 27kb<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Logl Wts&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp; 0.0&nbsp;&nbsp;&nbsp;&nbsp; 0.0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0kb&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 5&nbsp;&nbsp; 45.5&nbsp;&nbsp;&nbsp;&nbsp; 0.0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 13kb<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Phys Rds&nbsp;&nbsp;&nbsp;&nbsp; 2 100.0&nbsp;&nbsp;&nbsp;&nbsp; 0.3&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0kb&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 165&nbsp;&nbsp; 91.2&nbsp;&nbsp;&nbsp;&nbsp; 1.0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 12kb<BR />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Phys Wts&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp;&nbsp; 0.0&nbsp;&nbsp;&nbsp;&nbsp; 0.0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0kb&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 16&nbsp;&nbsp;&nbsp; 8.8&nbsp;&nbsp;&nbsp;&nbsp; 0.0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 48kb</P><P>&nbsp;</P> Fri, 14 Sep 2012 00:23:01 GMT https://community.hpe.com/t5/operating-system-hp-ux/high-disk-usage-100/m-p/5803089#M481827 jerrym 2012-09-14T00:23:01Z https://community.hpe.com/t5/operating-system-hp-ux/high-disk-usage-100/m-p/5803411#M481831 <P>Do you actually have a performance problem? Are users actually complaining? glance or sar reporting 100% disk utilisation is pretty meaningless (all it is telling you is that during the interval, the disk was processing IO for 100% of the time - it doesn't mean the disk is struggling to deliver the IO required, or that it is responding slowly - by the same token, I could say when I have my PC turned on it is at 100% power utilisation, because all the time it is turned on it is drawing power - of course that isn't considering the current its actually drawing).</P><P>&nbsp;</P><P>As for the data you provided...</P><P>&nbsp;</P><P>- kctune of filecache_ settings - how do you think this is relevant? Controls the size of memory available on the host for file caching - TBH fiddling with this is unlikely to make much of a difference to disk IO if this is Oracle (which you do mention)</P><P>&nbsp;</P><P>- truss output - presumably of an ora_*_dbwr process? Again fairly meaningless - the process looks like it is analysing its own resource usage through the getrusage syscall - entirely reasonable, and not something I would be concerned about.</P><P>&nbsp;</P><P>- glance output - read the following:</P><P>&nbsp;</P><P><A target="_blank" href="http://www.hpug.org.uk/index.php?option=com_content&amp;task=view&amp;id=1264&amp;Itemid=160">http://www.hpug.org.uk/index.php?option=com_content&amp;task=view&amp;id=1264&amp;Itemid=160</A></P><P>&nbsp;</P> Fri, 14 Sep 2012 07:39:15 GMT https://community.hpe.com/t5/operating-system-hp-ux/high-disk-usage-100/m-p/5803411#M481831 Duncan Edmonstone 2012-09-14T07:39:15Z https://community.hpe.com/t5/operating-system-hp-ux/high-disk-usage-100/m-p/5803711#M481834 <P>Hi Jerry,</P><P>&nbsp;</P><P>Lot of missing information.&nbsp; The disk reports you're showing are cumulative. What is showing when you select IOByDisk? Are there individual disks that are heavily loaded while others are not?&nbsp; How does that compare to prior to migration to the vMax?&nbsp; I've done a couple of vMax migrations from DMX and not had any issues. What where you using before?&nbsp; How many HBA's?&nbsp; Using pvlinks or Power Path? If Power Path, is it licensed and the multipathing enabled to allow parallel traffic on the HBA's?</P><P>&nbsp;</P><P>If you have a X-Window server for your desk top, run the gpm version of Glance and look at the Disk Detail window of the busy disks. See what is showing for Queue Length and the Wait Queue Length table.</P> Fri, 14 Sep 2012 13:41:57 GMT https://community.hpe.com/t5/operating-system-hp-ux/high-disk-usage-100/m-p/5803711#M481834 Ken Grabowski 2012-09-14T13:41:57Z