Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1629203
| From | Mike Galbraith <efault@gmx.de> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: TREE_SRCU slows hotplug by factor ~16 |
| Date | 2017-04-24 07:30 +0200 |
| Message-ID | <tzEJr-2O1-1@gated-at.bofh.it> (permalink) |
| References | <tzCoh-M8-1@gated-at.bofh.it> <tzD10-1ml-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Sun, 2017-04-23 at 20:32 -0700, Paul E. McKenney wrote: > On Mon, Apr 24, 2017 at 04:48:09AM +0200, Mike Galbraith wrote: > > Greetings, > > > > Running Steven's hotplug stress script in tip w. CLASSIC_SRCU takes 55s > > in my i4790 box, whereas TREE_SRCU takes over 16m. (Master with the > > same config does it in 39s.. but then lockdep isn't enabled in master) > > That doesn't sound good... > > But exactly which version are you using? There were some 8x slowdowns > earlier this week that have since been fixed. Also, how many CPUs are > on your system? 4 cores+SMT, tip.yesterday_afternoon (precise!) was initial test point, tip.this_morning (v4.11-rc7-955-g76f8909e1cd8) is still slow. -Mike
Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
TREE_SRCU slows hotplug by factor ~16 Mike Galbraith <efault@gmx.de> - 2017-04-24 05:00 +0200
Re: TREE_SRCU slows hotplug by factor ~16 "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2017-04-24 05:40 +0200
Re: TREE_SRCU slows hotplug by factor ~16 Mike Galbraith <efault@gmx.de> - 2017-04-24 07:30 +0200
Re: TREE_SRCU slows hotplug by factor ~16 "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2017-04-24 08:30 +0200
Re: TREE_SRCU slows hotplug by factor ~16 Mike Galbraith <efault@gmx.de> - 2017-04-24 09:40 +0200
Re: TREE_SRCU slows hotplug by factor ~16 Mike Galbraith <efault@gmx.de> - 2017-04-24 10:50 +0200
Re: TREE_SRCU slows hotplug by factor ~16 "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2017-04-24 18:30 +0200
csiph-web