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+[[!meta copyright="Copyright © 2011 Free Software Foundation, Inc."]]
+
+[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
+id="license" text="Permission is granted to copy, distribute and/or modify this
+document under the terms of the GNU Free Documentation License, Version 1.2 or
+any later version published by the Free Software Foundation; with no Invariant
+Sections, no Front-Cover Texts, and no Back-Cover Texts.  A copy of the license
+is included in the section entitled [[GNU Free Documentation
+License|/fdl]]."]]"""]]
+
+[[!meta title="Degradation of GNU/Hurd ``system performance''"]]
+
+[[!tag open_issue_gnumach open_issue_hurd]]
+
+[[!toc]]
+
+
+# Email, [[!message-id "87mxg2ahh8.fsf@kepler.schwinge.homeip.net"]] (bug-hurd, 2011-07-25, Thomas Schwinge)
+
+> Building a certain GCC configuration on a freshly booted system: 11 h.
+> Remove build tree, build it again (2nd): 12 h 50 min.  Huh.  Remove build
+> tree, reboot, build it again (1st): back to 11 h.  Remove build tree, build
+> it again (2nd): 12 h 40 min.  Remove build tree, build it again (3rd): 15 h.
+
+IRC, freenode, #hurd, 2011-07-23:
+
+    < antrik> tschwinge: yes, the system definitely gets slower with
+      time. after running for a couple of weeks, it needs at least twice as
+      long to open a new shell for example
+    < antrik> I don't know whether this is only related to swap usage, or there
+      are some serious fragmentation issues
+    < braunr> antrik: both could be induced by fragmentation
+
+
+# During [[IPC_virtual_copy]] testing
+
+IRC, freenode, #hurd, 2011-09-02:
+
+    <manuel> interestingly, running it several times has made the performance
+      drop quite much (i'm getting 400-500MB/s with 1M now, compared to nearly
+      800 fifteen minutes ago)
+    <braunr> manuel: i observed the same behaviour
+    [...]
+
+
+# IRC, freenode, #hurd, 2011-09-22
+
+See [[/open_issues/pagers]], IRC, freenode, #hurd, 2011-09-22.