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...3736 3658 7696 6 4942 4434 9876 7 6304 5176 11901 8 7736 5955 14551 Below is the code that I used: static inline u32 queue_code_xchg(struct qspinlock *lock, u32 *ocode, u32 ncode) { while (true) { u32 qlcode = atomic_read(&lock->qlcode); if (qlcode == 0) { /* * Try to get the lock */ if (atomic_cmpxchg(&loc...

...o port=5060 dtmfmode=rfc2833 disallow=all allow=alaw [2552] type=friend context=dialplan-1 host=dynamic call-limit=10 defaultuser=2552 secret=xxxxxxx [2556] type=friend context=dialplan-1 host=dynamic call-limit=10 defaultuser=2556 secret=xxxxxxx == extensions.conf == [globals] CID => 5822550 OCODE => 582 XTENS => 255X DTRK => smg01 CONF => 2559 ADALNUMER => 2550 ADALDIAL => SIP/2551&SIP/2552&SIP/2553&SIP/2554 BAKVAKT => 7712555 [general] static=yes writeprotect=yes clearglobalvars=no userscontext=default [dialplan-1] include => conferences include =>...

...trylock logic + * in the slowpath as it will be redundant. + */ +#define queue_spin_trylock(lock) (0) #define queue_code_xchg queue_code_xchg /** @@ -131,13 +226,40 @@ static DEFINE_PER_CPU_ALIGNED(struct qnode_set, qnset) = { { { 0 } }, 0 }; * @lock : Pointer to queue spinlock structure * @ocode: Old queue code in the lock [OUT] * @ncode: New queue code to be exchanged - * Return: 0 is always returned + * Return: 1 if lock is taken and so can release the queue node, 0 otherwise. */ static inline int queue_code_xchg(struct qspinlock *lock, u32 *ocode, u32 ncode) { union arch_qspinl...

v6->v7: - Remove an atomic operation from the 2-task contending code - Shorten the names of some macros - Make the queue waiter to attempt to steal lock when unfair lock is enabled. - Remove lock holder kick from the PV code and fix a race condition - Run the unfair lock & PV code on overcommitted KVM guests to collect performance data. v5->v6: - Change the optimized

v6->v7: - Remove an atomic operation from the 2-task contending code - Shorten the names of some macros - Make the queue waiter to attempt to steal lock when unfair lock is enabled. - Remove lock holder kick from the PV code and fix a race condition - Run the unfair lock & PV code on overcommitted KVM guests to collect performance data. v5->v6: - Change the optimized

...ode(u32 cpu_nr, u8 qn_idx) +{ + return ((cpu_nr + 1) << (_QCODE_VAL_OFFSET + 2)) | + (qn_idx << _QCODE_VAL_OFFSET); +} +#endif /* queue_encode_qcode */ + +#ifndef queue_code_xchg +/** + * queue_code_xchg - exchange a queue code value + * @lock : Pointer to queue spinlock structure + * @ocode: Old queue code in the lock [OUT] + * @ncode: New queue code to be exchanged + * Return: An enum exitval value + */ +static inline enum exitval +queue_code_xchg(struct qspinlock *lock, u32 *ocode, u32 ncode) +{ + ncode |= _QLOCK_LOCKED; /* Set lock bit */ + + /* + * Exchange current copy of the q...

Hi, Here are some numbers for my version -- also attached is the test code. I found that booting big machines is tediously slow so I lifted the whole lot to userspace. I measure the cycles spend in arch_spin_lock() + arch_spin_unlock(). The machines used are a 4 node (2 socket) AMD Interlagos, and a 2 node (2 socket) Intel Westmere-EP. AMD (ticket) AMD (qspinlock + pending + opt) Local:

Hi, Here are some numbers for my version -- also attached is the test code. I found that booting big machines is tediously slow so I lifted the whole lot to userspace. I measure the cycles spend in arch_spin_lock() + arch_spin_unlock(). The machines used are a 4 node (2 socket) AMD Interlagos, and a 2 node (2 socket) Intel Westmere-EP. AMD (ticket) AMD (qspinlock + pending + opt) Local:

v7->v8: - Remove one unneeded atomic operation from the slowpath, thus improving performance. - Simplify some of the codes and add more comments. - Test for X86_FEATURE_HYPERVISOR CPU feature bit to enable/disable unfair lock. - Reduce unfair lock slowpath lock stealing frequency depending on its distance from the queue head. - Add performance data for IvyBridge-EX CPU.

v7->v8: - Remove one unneeded atomic operation from the slowpath, thus improving performance. - Simplify some of the codes and add more comments. - Test for X86_FEATURE_HYPERVISOR CPU feature bit to enable/disable unfair lock. - Reduce unfair lock slowpath lock stealing frequency depending on its distance from the queue head. - Add performance data for IvyBridge-EX CPU.

v5->v6: - Change the optimized 2-task contending code to make it fairer at the expense of a bit of performance. - Add a patch to support unfair queue spinlock for Xen. - Modify the PV qspinlock code to follow what was done in the PV ticketlock. - Add performance data for the unfair lock as well as the PV support code. v4->v5: - Move the optimized 2-task contending code to the

v5->v6: - Change the optimized 2-task contending code to make it fairer at the expense of a bit of performance. - Add a patch to support unfair queue spinlock for Xen. - Modify the PV qspinlock code to follow what was done in the PV ticketlock. - Add performance data for the unfair lock as well as the PV support code. v4->v5: - Move the optimized 2-task contending code to the

N.B. Sorry for the duplicate. This patch series were resent as the original one was rejected by the vger.kernel.org list server due to long header. There is no change in content. v7->v8: - Remove one unneeded atomic operation from the slowpath, thus improving performance. - Simplify some of the codes and add more comments. - Test for X86_FEATURE_HYPERVISOR CPU feature bit

N.B. Sorry for the duplicate. This patch series were resent as the original one was rejected by the vger.kernel.org list server due to long header. There is no change in content. v7->v8: - Remove one unneeded atomic operation from the slowpath, thus improving performance. - Simplify some of the codes and add more comments. - Test for X86_FEATURE_HYPERVISOR CPU feature bit

...=== RCS file: /cvsroot/rsync/cleanup.c,v retrieving revision 1.11 diff -c -r1.11 cleanup.c *** cleanup.c 23 Mar 2001 01:26:04 -0000 1.11 --- cleanup.c 18 Feb 2002 00:39:34 -0000 *************** *** 40,51 **** --- 40,56 ---- */ void _exit_cleanup(int code, const char *file, int line) { + int ocode = code; extern int keep_partial; extern int log_got_error; signal(SIGUSR1, SIG_IGN); signal(SIGUSR2, SIG_IGN); + if (verbose > 3) + rprintf(FINFO,"_exit_cleanup(code=%d, file=%s, line=%d): entered\n", + code, file, line); + if (cleanup_child_pid != -1) {...

Hi all, we're suffering heavily from the "connection reset by peer" problem when running Rsync on WinNT. Great was our relief when seeing Randy's message in http://www.mail-archive.com/rsync@lists.samba.org/msg01918.html I immediately installed the full Cygwin to recompile Rsync, but since I'm far from a C guru, I'm a bit puzzled with the last 2 lines in Randy's

Hi, we ran into a little problem with rsync-2.5.5. Setup: you run rsync-2.5.5 as normal rsync over ssh (ie. not connecting to a rsync server). If you start such a rsync but interrupt the pulling process with Ctrl-C, the process on the other side may start to allocate all memory on the remote machine. As fa as we have analyzed the problem, the remote rsync process wants to issue a error message

..." "TRIPID_N" "HNAME" "HPHONE" "HADDRESS" [13] "HCITY" "HSTATE" "HZIP" "HAV_STAT" "H_XCORD" "H_YCORD" [19] "H_TAZ" "OPURP" "O_OPURP" "OCODE" "ONAME" "OGAVEHOM" [25] "OADDRESS" "OXSTRT1" "OXSTRT2" "OCITY" "OZIP" "OAV_STAT" [31] "O_XCORD" "O_YCORD" "O_TAZ" "GETTO" "O_GETTO" &quo...

The first rsync-2.5.6 pre-release version is now available at: http://rsync.samba.org/ftp/rsync/preview/rsync-2.5.6pre1.tar.gz ftp://rsync.samba.org/pub/rsync/preview/rsync-2.5.6pre1.tar.gz rsync://rsync.samba.org/ftp/rsync/preview/rsync-2.5.6pre1.tar.gz There's also a corresponding '.sig' file that contains a gpg signature of the file; the public key is available on the