svn commit: r195960 - in head/sys/dev/usb: . controller input
scottl at samsco.org
Sat Aug 1 02:58:50 UTC 2009
Dmitry Marakasov wrote:
> * Navdeep Parhar (nparhar at gmail.com) wrote:
>> This has slowed down core dumps very significantly. What used to take 10-15s on
>> my system now takes around 3 minutes.
> Same here.
Likely because prior to polling being implemented, each i/o was done
blindly and completed immediately instead of waiting for actual
confirmation from the hardware. Crashdumps have been slow for a
number of years, thanks to a fundamental change in how they are done.
Until now, USB was cheating and making them look fast.
More information about the svn-src-all