On 17/10/2019 6:20 pm, Sean Gleann wrote:
On our z14, z/OSMF takes some 60m+ EXCPs and 300 seconds of CPU time
(according to SDSF) before it can even be used...
I have been investigating this exact issue. Looking at SMF 92 records,
it appears that z/OSMF opens, reads and closes the same files thousands
of times.
On my Dallas RDP system z/OSMF also takes about 60m EXCPs to start up.
Startup is still fast - I suspect through caching magic of read only
filesystems or VM read only disks it achieves somewhere between 500K-1M
EXCPs per second and takes 1-2 minutes to start. (I also wonder whether
EXCPs are counted differently against filesystems.)
I wrote a Java program using EasySMF to count the type 92 file close
records by file name. The program:
import java.io.IOException;
import java.time.LocalDateTime;
import java.util.stream.Collectors;
import com.blackhillsoftware.smf.SmfRecordReader;
import com.blackhillsoftware.smf.smf92.*;
public class UssFileCloseCount
{
public static void main(String[] args) throws IOException
{
LocalDateTime start = LocalDateTime.of(2019, 10, 9, 14, 9);
LocalDateTime end = LocalDateTime.of(2019, 10, 9, 14, 11);
try (SmfRecordReader reader = SmfRecordReader.fromDD("INPUT"))
{
reader.include(92,11)
.stream()
.map(record -> Smf92Record.from(record))
.filter(r92 -> r92.smfDateTime().isAfter(start)
&& r92.smfDateTime().isBefore(end))
.filter(r92 ->
r92.identificationSection().smf92jbn().equals("IZUSVR1"))
.flatMap(r92 -> r92.FileCloses().stream())
.collect(Collectors.groupingBy(close -> close.smf92cpn(),
Collectors.counting()))
.entrySet().stream()
.filter(entry -> entry.getValue() > 10)// count > 10
.sorted((a, b) -> b.getValue().compareTo(a.getValue()))
.forEachOrdered(entry ->
System.out.format("%7d %s%n",
entry.getValue(), entry.getKey()));
}
}
}
The result:
1771 ation/helps/eclipse/plugins/com.ibm.cpomessages.help.doc/doc.zip
1719 helps/eclipse/plugins/com.ibm.cpomessages.help.doc/nl/ja/doc.zip
1662 n/helps/eclipse/plugins/com.ibm.tcp.ipsec.ipsec.help.doc/doc.zip
1597 s/eclipse/plugins/com.ibm.tcp.ipsec.ipsec.help.doc/nl/ja/doc.zip
1157 elps/eclipse/plugins/com.ibm.zosmfcore.messages.help.doc/doc.zip
1143 clipse/plugins/com.ibm.zosmfcore.messages.help.doc/nl/ja/doc.zip
1118 ta/cacheAdapt/com.ibm.ws.classloading.sharedlibrary_403/.overlay
903 clipse/plugins/com.ibm.zosmfdeployment.messages.help.doc/doc.zip
877 /plugins/com.ibm.zosmfdeployment.messages.help.doc/nl/ja/doc.zip
771 ipse/plugins/com.ibm.zosmfworkloadmgmt.messages.help.doc/doc.zip
681 eclipse/plugins/com.ibm.zosmfworkflows.messages.help.doc/doc.zip
676 gi/136/data/cacheAdapt/com.ibm.ws.classloading.sharedlibrary_403
652 lugins/com.ibm.zosmfworkloadmgmt.messages.help.doc/nl/ja/doc.zip
628 e/plugins/com.ibm.zosmfworkflows.messages.help.doc/nl/ja/doc.zip
551 n/helps/eclipse/plugins/com.ibm.commserver.zert.help.doc/doc.zip
478 n/helps/eclipse/plugins/com.ibm.zosmfdeployment.help.doc/doc.zip
442 sgi/60/data/cacheAdapt/com.ibm.ws.classloading.sharedlibrary_403
418 /var/zosmf/configuration/helps/eclipse/plugins/doc.zip
348 ipse/plugins/com.ibm.zosmfcapacityprov.messages.help.doc/doc.zip
342 lugins/com.ibm.zosmfcapacityprov.messages.help.doc/nl/ja/doc.zip
191 plugins/com.ibm.zosmfcpm.softwareconfigmessages.help.doc/doc.zip
191 lipse/plugins/com.ibm.zosmfincidentlog.messages.help.doc/doc.zip
188 plugins/com.ibm.zosmfincidentlog.messages.help.doc/nl/ja/doc.zip
188 /eclipse/plugins/com.ibm.zosmfcore.multisysplex.help.doc/doc.zip
185 /plugins/com.ibm.zosmfworkflows.editor.messages.help.doc/doc.zip
181 helps/eclipse/plugins/com.ibm.zosmfworkloadmgmt.help.doc/doc.zip
180 osmfServer/workarea/org.eclipse.osgi/26/data/bundle.origin.cache
178 helps/eclipse/plugins/com.ibm.zosmfcapacityprov.help.doc/doc.zip
175 eclipse/plugins/com.ibm.zosmfcapacityprov.help.doc/nl/ja/doc.zip
173 se/plugins/com.ibm.zosmfcore.multisysplex.help.doc/nl/ja/doc.zip
168 eclipse/plugins/com.ibm.zosmfworkloadmgmt.help.doc/nl/ja/doc.zip
166 lugins/com.ibm.zosmfcore.softwareconfigmessages.help.doc/doc.zip
166 eclipse/plugins/com.ibm.zosmfcpm.softwareconfig.help.doc/doc.zip
165 s/eclipse/plugins/com.ibm.zosmfcpm.resourceprov.help.doc/doc.zip
157 ation/helps/eclipse/plugins/com.ibm.gpmmessages.help.doc/doc.zip
154 /helps/eclipse/plugins/com.ibm.zosmfincidentlog.help.doc/doc.zip
154 helps/eclipse/plugins/com.ibm.gpmmessages.help.doc/nl/ja/doc.zip
151 /eclipse/plugins/com.ibm.zosmfincidentlog.help.doc/nl/ja/doc.zip
149 lipse/plugins/com.ibm.zosmfresourcemon.messages.help.doc/doc.zip
146 helps/eclipse/plugins/com.ibm.zosmfcore.general.help.doc/doc.zip
145 eclipse/plugins/com.ibm.zosmfcore.general.help.doc/nl/ja/doc.zip
142 plugins/com.ibm.zosmfresourcemon.messages.help.doc/nl/ja/doc.zip
139 /eclipse/plugins/com.ibm.zosmfcore.resourceprov.help.doc/doc.zip
137 /helps/eclipse/plugins/com.ibm.zosmfmondesktops.help.doc/doc.zip
136 on/helps/eclipse/plugins/com.ibm.zosmfworkflows.help.doc/doc.zip
134 /eclipse/plugins/com.ibm.zosmfmondesktops.help.doc/nl/ja/doc.zip
129 ps/eclipse/plugins/com.ibm.zosmfworkflows.help.doc/nl/ja/doc.zip
128 ns/com.ibm.zosmfworkflows.editor.messages.help.doc/nl/ja/doc.zip
124 s/eclipse/plugins/com.ibm.zosmfworkflows.editor.help.doc/doc.zip
107 e/plugins/com.ibm.zosmfcpm.resourceprovmessages.help.doc/doc.zip
104 e/plugins/com.ibm.zosmfcpm.softwareconfig.help.doc/nl/ja/doc.zip
101 elps/eclipse/plugins/com.ibm.zosmfispf.messages.help.doc/doc.zip
101 ns/com.ibm.zosmfcpm.resourceprovrespoolmessages.help.doc/doc.zip
98 clipse/plugins/com.ibm.zosmfispf.messages.help.doc/nl/ja/doc.zip
91 pse/plugins/com.ibm.zosmfworkflows.editor.help.doc/nl/ja/doc.zip
90 pse/plugins/com.ibm.zosmfcpm.resourceprov.help.doc/nl/ja/doc.zip
90 /plugins/com.ibm.zosmfcore.resourceprovmessages.help.doc/doc.zip
90 s/com.ibm.zosmfcpm.softwareconfigmessages.help.doc/nl/ja/doc.zip
90 /com.ibm.zosmfcore.softwareconfigmessages.help.doc/nl/ja/doc.zip
90 se/plugins/com.ibm.zosmfcore.resourceprov.help.doc/nl/ja/doc.zip
88 /eclipse/plugins/com.ibm.zosmfsysplexmanagement.help.doc/doc.zip
82 s/com.ibm.zosmfcore.resourceprovrespoolmessages.help.doc/doc.zip
... more
Andrew Rowley
Black Hill Software
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