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Re: Unneeded displaced single stepping causes issues: Performance drop and range stepping killer
- From: Doug Evans <dje at google dot com>
- To: Raphael Zulliger <zulliger at indel dot ch>
- Cc: Yao Qi <yao at codesourcery dot com>, gdb <gdb at sourceware dot org>
- Date: Tue, 30 Apr 2013 20:35:44 -0700
- Subject: Re: Unneeded displaced single stepping causes issues: Performance drop and range stepping killer
- References: <517516D8 dot 6010604 at indel dot ch> <5177425D dot 7080901 at codesourcery dot com> <51778299 dot 40402 at indel dot ch>
On Tue, Apr 23, 2013 at 11:58 PM, Raphael Zulliger <zulliger@indel.ch> wrote:
> - There's something I hope we could improve (but I haven't looked
> into the code yet): When GDB receives a stop reply, it issues many "memory
> reads". Sometimes it read consecutive memory by multiple RSP packages.
> Sometime it even reads the same memory region twice.
It's unfortunate that gdb's remote caching support doesn't work better
"out of the box".