Performance tuning the Fedora Desktop

[Will Cohen]

Warren Togami wrote:

> On a somewhat related note, the rhn-applet uses more than 30MB of 
> virtual memory.  That is just WAY too big.  Also look at its CPU time 
> after a few days running.  The combined time of it doing *something* 
> seems a bit too much IMHO.

Ick, 30MB and 16MB resident for the rhn-applet? I took a quick look at 
the  rhn-applet-gui on RHEL3 and FC2-test 3. The applet has definitely 
gotten bloated. The RHN people just sit around the corner from me I 
might point this out to them. -Will

On RHEL3

    PID USER     PRI  NI  SIZE  RSS SHARE STAT %CPU %MEM   TIME CPU COMMAND
  2227 wcohen    25  10 12896 6872  2512 S N   0.0  2.7  21:13   1 
rhn-applet-gu


On FC2-test3

   PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
  9664 wcohen    25  10 29592  16m  22m S  0.0  3.2   0:00.45 rhn-applet-gui

This applet is pulling in lots of libraries. Just counting the number of 
memory maps, no consideration about the amount of space for each map:

RHEL 3

236 map entries
106 shared library code ( grep  "r-xp" /tmp/rhn-app.map |grep ".so"|wc)
106 shared library data ( grep  "rw-p" /tmp/rhn-app.map |grep ".so"|wc)


107 executable (grep "r-xp" /tmp/rhn-app.map |wc)
124 rw data (grep "rw-p" /tmp/rhn-app.map |wc)
   2 ro data (grep "r--p" /tmp/rhn-app.map |wc)


FC2-test3

270 map entries
115 shared library code ( grep  "r-xp" /tmp/rhn-app.map |grep ".so"|wc)
115 shared library data ( grep  "rw-p" /tmp/rhn-app.map |grep ".so"|wc)

117 executables (grep "r-xp" /tmp/rhn-app.map.fc2 |wc)
139 rw data (grep "rw-p" /tmp/rhn-app.map |wc)
  10 ro data (grep "r--p" /tmp/rhn-app.map |wc)


Files mapped into FC2-test3 but don't appear to be listed in RHEL3

+/lib/libcom_err.so.2.1
+/lib/libnss_files-2.3.3.so
+/lib/libselinux.so.1
+/lib/tls/librt-2.3.3.so
+/usr/lib/libasound.so.2.0.0
+/usr/lib/libgnome-keyring.so.0.0.0
+/usr/lib/libgssapi_krb5.so.2.2
+/usr/lib/libIDL-2.so.0.0.0
+/usr/lib/libk5crypto.so.3.0
+/usr/lib/libkrb5.so.3.2
+/usr/lib/libORBit-imodule-2.so.0.0.0
+/usr/lib/python2.3/lib-dynload/binascii.so
+/usr/lib/python2.3/lib-dynload/md5module.so
+/usr/lib/python2.3/lib-dynload/_random.so
+/usr/lib/python2.3/lib-dynload/_ssl.so
+/usr/lib/python2.3/site-packages/_xmlplus/parsers/pyexpat.so
+/usr/X11R6/lib/libXcursor.so.1.0.2