behlendo d46630e0f3 The first locking issue was due to the semaphore I used. I was trying ... to be overly clever and the context switch when the semaphore was busy was destroying performance. Converting to a simple spin lock bough me a factor of 50 or so. That said it's still not good enough. Tests show bad performance and we are still CPU bound. The logical fix is I need to implement per-cpu hot caches to minimize the SMP contention. Linux and Solaris both have this, I was hoping to do without but it looks like that's not to be. kmem_lock: time (sec) slabs objs hash kmem_lock: tot/max/calc tot/max/calc size/depth kmem_lock: 0.022000000 7/6/64 224/177/2048 32768/1 kmem_lock: 0.039000000 13/13/128 416/404/4096 32768/1 kmem_lock: 0.079000000 23/21/256 736/672/8192 32768/1 kmem_lock: 0.158000000 48/47/512 1536/1504/16384 32768/1 kmem_lock: 0.345000000 105/105/1024 3360/3358/32768 32768/2 kmem_lock: 0.760000000 202/200/2048 6464/6400/65536 32768/3 git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@135 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c		2008-06-24 17:18:15 +00:00
..
Makefile.in	Breaking the world for a little bit. If anyone is going to continue	2008-06-02 17:28:49 +00:00
splat-atomic.c	Fix missing return resulting in a double unlock of &files->file_lock	2008-06-03 20:58:55 +00:00
splat-condvar.c	Go through and add a header with the proper UCRL number.	2008-05-26 04:38:26 +00:00
splat-ctl.c	Breaking the world for a little bit. If anyone is going to continue	2008-06-02 17:28:49 +00:00
splat-internal.h	Go through and add a header with the proper UCRL number.	2008-05-26 04:38:26 +00:00
splat-kmem.c	The first locking issue was due to the semaphore I used. I was trying	2008-06-24 17:18:15 +00:00
splat-kobj.c	Go through and add a header with the proper UCRL number.	2008-05-26 04:38:26 +00:00
splat-mutex.c	Breaking the world for a little bit. If anyone is going to continue	2008-06-02 17:28:49 +00:00
splat-random.c	Go through and add a header with the proper UCRL number.	2008-05-26 04:38:26 +00:00
splat-rwlock.c	Go through and add a header with the proper UCRL number.	2008-05-26 04:38:26 +00:00
splat-taskq.c	Go through and add a header with the proper UCRL number.	2008-05-26 04:38:26 +00:00
splat-thread.c	Go through and add a header with the proper UCRL number.	2008-05-26 04:38:26 +00:00
splat-time.c	Go through and add a header with the proper UCRL number.	2008-05-26 04:38:26 +00:00
splat-vnode.c	Fix missing return resulting in a double unlock of &files->file_lock	2008-06-03 20:58:55 +00:00