Date: Wed, 23 May 2001 23:19:19 -0700 From: Ed Hudson <elh_fbsd@spnet.com> To: Mike Silbersack <silby@silby.com> Cc: Ed Hudson <elh@spnet.com>, hackers@FreeBSD.ORG Subject: Re: general speed differences between 4.1.1-RELEASE and 4.3-RELEASE Message-ID: <200105240619.f4O6JJ900472@m44.spnet.com> In-Reply-To: Message from Mike Silbersack <silby@silby.com> of "Thu, 24 May 2001 00:48:02 CDT." <20010524004057.V55532-100000@achilles.silby.com>
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Mike Silbersack <silby@silby.com> writes: > Write caching is now off by default. man ata to see how to turn it back > on. Mr. Silbersack, thank you very much. you've restored my systems to their pre-4.3 stunningly fast behavior. to the hackers group, i apologize for polluting the air waves with my original plea for help. > <begin divergance> > > Seeing messages like this is becoming quite common on the lists since the > change was made. On the other hand, I don't recall seeing any message for my money, hw.ata.wc=1 soft updates OFF is a better performing choice than hw.ata.wc=0 and soft updates ON. (soft updates are great, but i really dislike the performance stalls that it (or async mode) engenders with big copies/etc for other processes). if the freebsd group still chooses to keep hw.ata.wc=0 as the default, i would urge perhaps a different mode for base system installs. the reason i used '8192m' partition in my original mail was because the wait for a 60gig newfs was pretty painful. in my original message i made a reference to linux. i'm a die-hard freebsd fan, but for work reasons etc i take a look at linux from time to time. in the same system that i mentioned originally, i've tried the experiment of powering off a machine (with no halt) after the first reboot after a virgin suse-7.1 install. linux couldn't put itself back together without manual intervention - the fsck seemed to just freak. even with the historic hw.ata.wc=1 effective mode of freebsd-*, i've never seen such bad behavior as i had with the linux-7.1 system. THANKS again to all you folks for the outstanding performance and reliability that freebsd attains. -elh To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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