Merge remote-tracking branch 'fp/master'

1 files changed, 34 insertions, 0 deletions

diff --git a/open_issues/gnumach_memory_management.mdwn b/open_issues/gnumach_memory_management.mdwn
index 511d3f2b..60ec7357 100644
--- a/open_issues/gnumach_memory_management.mdwn
+++ b/open_issues/gnumach_memory_management.mdwn
@@ -2229,3 +2229,37 @@ There is a [[!FF_project 266]][[!tag bounty]] on this task.
     <braunr> (i mean, when i made my tests, it looked like there were few
       kernel map entries, but i may have missed corner cases that could cause
       more of them to be needed)
+
+
+# IRC, freenode, #hurd, 2013-04-18
+
+    <braunr> oh nice, i've found a big scalability issue with my slab allocator
+    <braunr> it shouldn't affect gnumach much though
+
+
+## IRC, freenode, #hurd, 2013-04-19
+
+    <ArneBab> braunr: is it fixable?
+    <braunr> yes
+    <braunr> well, i'll do it in x15 for a start
+    <braunr> again, i don't think gnumach is much affected
+    <braunr> it's a scalability issue
+    <braunr> when millions of objects are in use
+    <braunr> gnumach rarely has more than a few hundred thousands
+    <braunr> it's also related to heavy multithreading/smp
+    <braunr> and by multithreading, i also mean preemption
+    <braunr> gnumach isn't preemptible and uniprocessor
+    <braunr> if the resulting diff is clean enough, i'll push it to gnumach
+      though :)
+
+
+### IRC, freenode, #hurd, 2013-04-21
+
+    <braunr> ArneBab_: i fixed the scalability problems btw
+
+
+## IRC, freenode, #hurd, 2013-04-20
+
+    <braunr> well, there is also a locking error in the slab allocator,
+      although not a problem for a non preemptible kernel like gnumach
+    <braunr> non preemptible / uniprocessor