[[!meta copyright="Copyright © 2011, 2012 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/resource_management_problems/pagers]], IRC, freenode, #hurd, 2011-09-22. # [[ext2fs_page_cache_swapping_leak]]