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+[[!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]]."]]"""]]
+
+[[!tag open_issue_gnumach open_issue_hurd]]
+
+[[!toc]]
+
+
+# IRC, freenode, #hurd, 2012-07-08
+
+    <braunr> youpi: there is still quite a lot of I/O even for cached objects
+    <braunr> youpi: i strongly suspect these are for the metadata
+    <braunr> i.e. we don't have a "buffer cache", only a file cache
+    <braunr> (gnu is really not unix lol)
+    <youpi> doesn't ext2fs cache these?
+    <youpi> (as long as the corresponding object is cached
+    <youpi> )
+    <braunr> i didn't look too much, but if it does, it does a bad job
+    <braunr> i would guess it does, but possibly only writethrough
+    <youpi> iirc it does writeback
+    <youpi> there's a sorta "node needs written" flag somewhere iirc
+    <braunr> but that's for the files, not the metadata
+    <youpi> I mean the metadata of the node
+    <braunr> then i have no idea what happens