search for: quiescent

Hi All We want to use rsync to backup a live Berkley db to a remote site. BDB has a requirement that read has to be in the unit of db page size. So wonder how could we make sure that rsync can follow that? If we need to change the code, where we should begin to look at? Thanks! Ming

...+ .lock = SPIN_LOCK_UNLOCKED, + .cpumask = CPU_MASK_NONE, +}; + +DEFINE_PER_CPU(struct rcu_data, rcu_data) = { 0L }; + +static int blimit = 10; +static int qhimark = 10000; +static int qlowmark = 100; +#ifdef CONFIG_SMP +static int rsinterval = 1000; +#endif + +#ifdef CONFIG_SMP +static void force_quiescent_state(struct rcu_data *rdp, + struct rcu_ctrlblk *rcp) +{ + cpumask_t cpumask; + raise_softirq(SCHEDULE_SOFTIRQ); + if (unlikely(rdp->qlen - rdp->last_rs_qlen > rsinterval)) { + rdp->last_rs_qlen = rdp->qlen; + /* + * Don''t send IPI to itself. With irqs disabled, + *...

...+ .lock = SPIN_LOCK_UNLOCKED, + .cpumask = CPU_MASK_NONE, +}; + +DEFINE_PER_CPU(struct rcu_data, rcu_data) = { 0L }; + +static int blimit = 10; +static int qhimark = 10000; +static int qlowmark = 100; +#ifdef CONFIG_SMP +static int rsinterval = 1000; +#endif + +#ifdef CONFIG_SMP +static void force_quiescent_state(struct rcu_data *rdp, + struct rcu_ctrlblk *rcp) +{ + cpumask_t cpumask; + raise_softirq(SCHEDULE_SOFTIRQ); + if (unlikely(rdp->qlen - rdp->last_rs_qlen > rsinterval)) { + rdp->last_rs_qlen = rdp->qlen; + /* + * Don''t send IPI to itself. With irqs disabled, + *...

I have started mirroring various cvs archives such as gcc, but I have started wondering/worrying about the validity of doing this. If the cvs archive is busy and potentially subject to many accesses during the rsync process, is the mirrored copy going to be valid/consistent? Any information/help greatly apprieciated Andrew Walrond

...mu subprocess: guestfs_get_pid (g); --> returns PID You can use Linux to map this to a list of thread IDs: ls /proc/$PID/task/ --> returns a list of thread IDs [Yes, this is potentially racy, but in reality qemu has already started up fully after guestfs_launch returns and is almost quiescent when you're not issuing commands.] Then you can assign the threads to the cgroup: for tid in $(ls -1 /proc/$PID/task); do echo $tid > /cgroup/blkio/$group/tasks done This is more cumbersome if you're using guestfish instead of some scripting language, and it's difficult if...

hi guys,   happy new year!!!  I encountered  a problem when we used virt-df command to display my guest disks useage. the virt-df command from pkg libguestfs-tools-c-1.36.3-6.el7_4.3.x86_64,version is  virt-df --version : virt-df 1.36.3rhel=7,release=6.el7_4.3,libvirt the output in guest with the method referred in http://libguestfs.org/virt-df.1.html#STATVFS NUMBERS is:

Hi, was wondering if anyone else had a similar problem and knows why or a solution. basically my mongrels seems to work fine. i am running three clusters all which are monitored by monit. monit has the ability to restart a mongrel if it doesn''t pass a port connection test. so the problem is that after some time. aprox. 6hrs. to 20hrs. after clusters are started, the mongrels get

...rcu_read_lock() used illegally while idle! [ 2.513271] [ 2.513271] other info that might help us debug this: [ 2.513271] [ 2.513388] [ 2.513388] RCU used illegally from idle CPU! [ 2.513388] rcu_scheduler_active = 1, debug_locks = 1 [ 2.513511] RCU used illegally from extended quiescent state! [ 2.513572] 1 lock held by swapper/0/0: [ 2.513626] #0: (rcu_read_lock){......}, at: [<ffffffff810e9fe0>] __atomic_notifier_call_chain+0x0/0x140 [ 2.513815] [ 2.513815] stack backtrace: [ 2.513897] Pid: 0, comm: swapper/0 Not tainted 3.6.5 #1 [ 2.513954] Call Trace:...

...rcu_read_lock() used illegally while idle! [ 2.513271] [ 2.513271] other info that might help us debug this: [ 2.513271] [ 2.513388] [ 2.513388] RCU used illegally from idle CPU! [ 2.513388] rcu_scheduler_active = 1, debug_locks = 1 [ 2.513511] RCU used illegally from extended quiescent state! [ 2.513572] 1 lock held by swapper/0/0: [ 2.513626] #0: (rcu_read_lock){......}, at: [<ffffffff810e9fe0>] __atomic_notifier_call_chain+0x0/0x140 [ 2.513815] [ 2.513815] stack backtrace: [ 2.513897] Pid: 0, comm: swapper/0 Not tainted 3.6.5 #1 [ 2.513954] Call Trace:...

...nted by the performance: With just one node actively using the fs (but with the other mounted) I'm finding that file system operations are running *very* slowly -- a linux kernel build takes 5 times longer, with the system blocked on IO most of the time. Looking at the node that is supposedly quiescent, I see that kernel thread "events/0" is burning 100% of the CPU. Sure enough, syslog is filling up rapidly with messages of the form: Oct 17 22:01:13 breakout-0 kernel: process_vote: type: MODIFY, lockid: 2751426560, action: (11) <NULL>, num_ident: 1, alive: 1, write: 0, change2719...

> On May 4, 2016, at 4:41 PM, Jim Grosbach <grosbach at apple.com> wrote: > >> >> On May 2, 2016, at 4:03 PM, Quentin Colombet via llvm-dev <llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>> wrote: >> >> Hi Hans, >> >> Since you are actively doing this kind of things, your feedbacks is particularly valuable. >>

upstream commit 7e96287ddc4f42081e18248b6167041c0908004c Author: Vivek Goyal <vgoyal@in.ibm.com> [PATCH] kdump: introduce "reset_devices" command line option Resetting the devices during driver initialization can be a costly operation in terms of time (especially scsi devices). This option can be used by drivers to know that user forcibly wants the devices to

...ny uses where the Argument obtained survives beyond the scope of the local function. There have been other bits of weirdness about Arguments, for example crashes or non-crashes depending on wether they had a name set or not (all combinations of these two parameters), but those seem to be quiescent at the time. Any ideas? Thanks, Marcel ------- my weird code.m ------------ -argumentAtIndex:(int)argIndex { Argument *ArgX; if ( argIndex < numArgs ) { int i; ArgX = ((Function*)function)->arg_begin(); for (i=0 ;i<a...

Hi all, We are currently looking at a solution for backing up files on laptops to a server in a small office (10 users). I was looking at rsync as a solution. Here is my suggested solution: Install rsync on network server - this is Windows 2000 :-( Share the root of C:\ on laptops Schedule rsync to periodically mount to laptops share ove SMB (if they can be found) and running an incremental

...build-for-7.2 -i statvfs /boot >> bsize: 4096 >> frsize: 4096 >> blocks: 127147 >> bfree: 100215 >> bavail: 100215 >> files: 512000 >> ffree: 511626 >> favail: 511626 >> fsid: 2049 >> flag: 4097 >> namemax: 255 > >Was the guest quiescent and fully sync()d before you ran the python >commands? yes, almost the guest is quiescent, and after invoke sync(), the results have no different. > >In any case all that libguestfs is doing is executing the >statvfs(2) system call on a copy of the disk: > > https://github.c...

...yzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890 username_format: %Lu passdb: driver: ldap args: /usr/local/etc/dovecot-ldap-passdb.conf userdb: driver: ldap args: /usr/local/etc/dovecot-ldap-userdb.conf We are using LDAP for the passdb and userdb. The oddity is that even on a quiescent system (Dovecot started from scratch, but no connections being made to it) we are seeing these messages being logged, apparently every 5 minutes: dovecot: Mar 09 11:09:44 Error: auth(default): LDAP: ldap_result() failed: Can't contact LDAP server dovecot: Mar 09 11:09:44 Error: auth(defa...

...Yeah, I agree, we shouldn't have to file PRs for that kind of stuff. Quick fixes for the build or tests on other platforms obviously fall into this category. Do release managers have problems keeping track of these kinds of changes in practice, though? You can always cut the branch from some quiescent period on the weekend of night before the cut. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20160505/c480d3be/attachment-0001.html>

...be used for the next connection. In order for this to be successfully exploited, the attacker must also satisfy the following conditions: a) be able to initiate several consecutive TCP connections to an open port on the server in a short space of time (immediately followed by the attack itself). Quiescent servers (those which are not receiving connections from other systems at the time of attack) are therefore most vulnerable to the attack. b) be able to prevent the spoofed client machine from responding to the packets sent to it from the server, by making use of an address which is offline or by e...

...amemax: 255 > > # sudo guestfish --ro -d rpm-build-for-7.2 -i statvfs /boot > bsize: 4096 > frsize: 4096 > blocks: 127147 > bfree: 100215 > bavail: 100215 > files: 512000 > ffree: 511626 > favail: 511626 > fsid: 2049 > flag: 4097 > namemax: 255 Was the guest quiescent and fully sync()d before you ran the python commands? In any case all that libguestfs is doing is executing the statvfs(2) system call on a copy of the disk: https://github.com/libguestfs/libguestfs/blob/e6e23c4d77ee15779f833fd4fbe6c574940e85a4/daemon/statvfs.c#L52 So if there's any differ...

...mably since S+ stores everything in .Data this can automatically be arranged by system('ls -lrt .Data') for example, just about the only advantage of overworking your disk other than error recovery that I can think of. Assuming Unix of course. Just a thought - along with the autosave when quiescent that I posted a little while ago ... John lls<-function (pat = "") { lll <- ls(1, pat = pat) for (i in 1:length(lll)) { cat(formatC(eval(parse(t = paste("mode(", lll[i], ")"))), 1, 12), formatC(lll[i], 1, max(nchar(lll)) + 1),...