Date: Sat, 9 Oct 2010 02:50:23 +0000 (UTC) From: David Xu <davidxu@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/kern init_main.c kern_exit.c kern_fork.c kern_kthread.c kern_resource.c kern_sig.c kern_thr.c kern_thread.c kern_time.c kern_umtx.c sys_process.c uipc_mqueue.c vfs_aio.c src/sys/sys proc.h signalvar.h Message-ID: <201010090250.o992onqh073318@repoman.freebsd.org>
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davidxu 2010-10-09 02:50:23 UTC
FreeBSD src repository
Modified files:
sys/kern init_main.c kern_exit.c kern_fork.c
kern_kthread.c kern_resource.c kern_sig.c
kern_thr.c kern_thread.c kern_time.c
kern_umtx.c sys_process.c uipc_mqueue.c
vfs_aio.c
sys/sys proc.h signalvar.h
Log:
SVN rev 213642 on 2010-10-09 02:50:23Z by davidxu
Create a global thread hash table to speed up thread lookup, use
rwlock to protect the table. In old code, thread lookup is done with
process lock held, to find a thread, kernel has to iterate through
process and thread list, this is quite inefficient.
With this change, test shows in extreme case performance is
dramatically improved.
Earlier patch was reviewed by: jhb, julian
Revision Changes Path
1.315 +1 -0 src/sys/kern/init_main.c
1.336 +2 -0 src/sys/kern/kern_exit.c
1.313 +1 -1 src/sys/kern/kern_fork.c
1.56 +3 -0 src/sys/kern/kern_kthread.c
1.203 +13 -23 src/sys/kern/kern_resource.c
1.400 +11 -17 src/sys/kern/kern_sig.c
1.85 +61 -66 src/sys/kern/kern_thr.c
1.295 +70 -1 src/sys/kern/kern_thread.c
1.149 +11 -17 src/sys/kern/kern_time.c
1.87 +3 -8 src/sys/kern/kern_umtx.c
1.170 +3 -14 src/sys/kern/sys_process.c
1.48 +11 -3 src/sys/kern/uipc_mqueue.c
1.247 +8 -4 src/sys/kern/vfs_aio.c
1.558 +8 -0 src/sys/sys/proc.h
1.92 +10 -1 src/sys/sys/signalvar.h
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