Re: Synchronizing TSC

2013-04-16 Thread Alexander Motin
On 17.04.2013 03:25, Jim Harris wrote: On Tue, Apr 16, 2013 at 3:04 PM, Alexander Motin mailto:m...@freebsd.org>> wrote: Hi. Recently I've got 6-core/12-thread system on Sandy Bridge-E Core i7-3930K CPU and was unpleasantly surprised to see that TSCs are not synchronized there.

Re: Synchronizing TSC

2013-04-16 Thread Jim Harris
On Tue, Apr 16, 2013 at 3:04 PM, Alexander Motin wrote: > Hi. > > Recently I've got 6-core/12-thread system on Sandy Bridge-E Core i7-3930K > CPU and was unpleasantly surprised to see that TSCs are not synchronized > there. While all 11 APs were synchronized, BSP was far behind them. Since > it i

Re: MADV_FREE and wait4 EFAULT

2013-04-16 Thread RW
On Tue, 16 Apr 2013 14:12:54 -0700 Carl Shapiro wrote: > I am seeing wait4 system calls failing with an EFAULT and I am trying > to understand what might be going wrong. > > An inspection of the wait4 implementation suggests the opportunity > for EFAULT is within its invocations of copyout. In

Synchronizing TSC

2013-04-16 Thread Alexander Motin
Hi. Recently I've got 6-core/12-thread system on Sandy Bridge-E Core i7-3930K CPU and was unpleasantly surprised to see that TSCs are not synchronized there. While all 11 APs were synchronized, BSP was far behind them. Since it is single-socket system, I don't know any good reason for such be

Re: USB Printer quirks

2013-04-16 Thread Joshua Isom
On 4/16/2013 3:40 AM, Hans Petter Selasky wrote: On 04/15/13 22:14, Joshua Isom wrote: On 4/15/2013 5:41 AM, Hans Petter Selasky wrote: Hi, What does dmesg say about your printer. Is cups hooked up the correct /dev/uxxx device ? --HPS Here's what I got the last time I plugged it in. Apr 1

MADV_FREE and wait4 EFAULT

2013-04-16 Thread Carl Shapiro
I am seeing wait4 system calls failing with an EFAULT and I am trying to understand what might be going wrong. An inspection of the wait4 implementation suggests the opportunity for EFAULT is within its invocations of copyout. In my situation, the status and rusage pointer arguments contain addr

Re: USB Printer quirks

2013-04-16 Thread Hans Petter Selasky
On 04/15/13 22:14, Joshua Isom wrote: On 4/15/2013 5:41 AM, Hans Petter Selasky wrote: Hi, What does dmesg say about your printer. Is cups hooked up the correct /dev/uxxx device ? --HPS Here's what I got the last time I plugged it in. Apr 13 07:38:17 jri root: Unknown USB device: vendor 0x