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From: "Zheng, Shaohui" <shaohui.zheng@intel.com>
To: "ian.campbell@citrix.com" <ian.campbell@citrix.com>,
	Haitao Shan <maillists.shan@gmail.com>,
	Keir Fraser <keir@xen.org>
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
Subject: RE: Xen 4.1 rc1 test report
Date: Tue, 25 Jan 2011 16:00:53 +0800	[thread overview]
Message-ID: <A24AE1FFE7AEC5489F83450EE98351BF2C5A5B1BB7@shsmsx502.ccr.corp.intel.com> (raw)
In-Reply-To: <AANLkTim5QgVj82uwE8fWRZNk0EKu5iyY2tzbe3d2k4Y+@mail.gmail.com>

Thanks haitao's clear explanation. I see that Ian is the author of series c/s 22288~22312. Add Ian into the loop. 

Thanks & Regards,
Shaohui

> -----Original Message-----
> From: Haitao Shan [mailto:maillists.shan@gmail.com]
> Sent: Tuesday, January 25, 2011 2:24 PM
> To: Zheng, Shaohui; Keir Fraser
> Cc: xen-devel@lists.xensource.com
> Subject: Re: [Xen-devel] Xen 4.1 rc1 test report
> 
> > Performance(1 bug)
> > 1. guest boot very slowly without limit dom0 cpu number on EX (Intel)
> > http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1719
> >
> 
> This bug happened 1 year before. Keir has made a fix with c/s 20841,
> which essentially holds the locked (and hence allocated) hypercall
> page so that next hypercall can reuse it without doing alloc and mlock
> again. By doing this, overhead of rschedule IPI as a result of
> frequent mlock is greatly reduced.
> 
> Late in year 2010, libxc introduced a new mechanism called hypercall
> buffers, as you can refer c/s 22288~22312. Keir's fix is dropped in
> this new framework. As a result, the bug appears again.
> Probably the new framework auther can pick up Keir's fix again?
> 
> Shan Haitao

  reply	other threads:[~2011-01-25  8:00 UTC|newest]

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <Acu6GEBstpnTfIH/TdeQZvf0FjUZ0Q==>
2011-01-22  9:39 ` Xen 4.1 rc1 test report Zheng, Shaohui
2011-01-24 17:05   ` Xen 4.1 rc1 test report (xl bits) Gianni Tedesco
2011-01-24 17:27     ` Christoph Egger
2011-01-24 17:43       ` [PATCH]: xl: Check a domain exists before destroying it Gianni Tedesco
2011-01-24 18:18         ` [PATCH, v2]: xl: Check domain existance when doing domain identifier lookups Gianni Tedesco
2011-01-24 18:39           ` Stefano Stabellini
2011-01-24 18:53             ` Gianni Tedesco
2011-01-24 19:05               ` Stefano Stabellini
2011-01-25 17:29               ` Ian Jackson
2011-01-25 17:28           ` Ian Jackson
2011-01-25 17:35             ` Gianni Tedesco
2011-01-25 18:28               ` Ian Jackson
2011-01-25 17:07         ` [PATCH]: xl: Check a domain exists before destroying it Ian Jackson
2011-01-25 17:17           ` Gianni Tedesco
2011-01-25 18:25             ` Ian Jackson
2011-01-24 18:35     ` Xen 4.1 rc1 test report (xl bits) Stefano Stabellini
2011-01-25 14:04     ` Gianni Tedesco
2011-01-26  3:47       ` Zhang, Yang Z
2011-01-25  6:24   ` Xen 4.1 rc1 test report Haitao Shan
2011-01-25  8:00     ` Zheng, Shaohui [this message]
2011-01-25  8:43     ` Keir Fraser
2011-01-25 11:43     ` Ian Campbell
2011-01-26  0:47       ` Haitao Shan
2011-01-26 10:57         ` libxc: maintain a small, per-handle, cache of hypercall buffer memory (Was: Re: Xen 4.1 rc1 test report) Ian Campbell
2011-01-27  9:47           ` Ian Campbell
2011-01-31  0:58             ` Haitao Shan
2011-01-31  3:06           ` Haitao Shan
2011-01-31  8:30             ` Ian Campbell
2011-01-31  8:57               ` Haitao Shan
2011-01-31  9:32                 ` Ian Campbell
2011-01-31 12:07                   ` Haitao Shan
2011-02-01  4:40                     ` Haitao Shan
2011-01-22 16:37 Xen 4.1 rc1 test report Zheng, Shaohui
2011-01-22 16:54 ` Mike Viau
2011-01-23  2:34   ` Zheng, Shaohui
2011-01-24 19:00 ` Stefano Stabellini
2011-01-25  3:42   ` Zhang, Yang Z
2011-01-25 11:23     ` Stefano Stabellini
2011-01-25 16:01     ` Stefano Stabellini
2011-01-26  1:01       ` Zheng, Shaohui
2011-01-26  3:54       ` Zheng, Shaohui
2011-01-26  4:53       ` Zheng, Shaohui
2011-01-25 10:10   ` Pasi Kärkkäinen
2011-01-25 15:49   ` Stefano Stabellini
2011-01-26  3:56     ` Zheng, Shaohui
2011-01-25 14:05 ` Wei, Gang
2011-01-26  5:52   ` Wei, Gang
2011-01-26  6:31     ` Wei, Gang
2011-01-26  7:24       ` Keir Fraser
2011-01-26  7:34         ` Wei, Gang
2011-01-26 14:38           ` Wei, Gang

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