From 334107905a655c4fc3ae7a6d0cb5e030e8b4a268 Mon Sep 17 00:00:00 2001 From: dillon Date: Fri, 19 Oct 2012 13:23:28 -0700 Subject: [PATCH] --- release32/index.mdwn | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) diff --git a/release32/index.mdwn b/release32/index.mdwn index b497e132..d7f61bc8 100644 --- a/release32/index.mdwn +++ b/release32/index.mdwn @@ -76,6 +76,17 @@ We supply a Makefile in `/usr` to track the pkgsrc tree and we supply a Git mirr > ### Kernel changes +* Many bug fixes, greatly improving stability. More robust pcb_onfault handling, fixed issues in the namecache module, VM system, etc. + +* Removed several arbitrary bounds on kernel caches (such as the buffer cache) for x86-64. + +* Improved control over BREAK_TO_DEBUGGER by adding run-time sysctls. + +* Removed sio console baud switching when console & getty/login is running on the same serial port. + +* mmap() now segment-aligns mappings when reasonable to do so. + +* KTR logging is now frozen on entry to panic. > ### Hardware changes @@ -88,8 +99,15 @@ We supply a Makefile in `/usr` to track the pkgsrc tree and we supply a Git mirr * Implemented shared tokens to reduce unnecessary bottlenecks in the VM system, particularly for forked and threaded processes. * Introduced a major pmap optimization for x86-64 which allows page table pages to be shared between UNRELATED processes (so it works for process's separately exec'd or forked), in situations where those processes are mmap()ing the same thing. This feature works extremely well for both sysv shared memory and mmap()-based shared memory. In tests with postgres and a 6GB shared memory block the prior memory consumption from forking is now gone. This page table sharing works even better than the original shm_use_phys sysctl. Also observed significantly faster X application startup. - + +* Removed bottlenecks from the SYSV semaphore module and fixed numerous timing races. + +* Added ability to bypass hardware timer read for gettimeofday(), added additional CLOCK_* defines for clock_gettime() and friends. + > ### Userland changes + +* mount now sniffs the label for hints on what type of filesystem is being mounted, when not otherwise specified. UFS is only assumed if no information can be garnered from the sniffing. + * > ### Removals -- 2.41.0