From: Johan De Meersman Date: September 21 2010 2:10pm Subject: Re: document for mysql performance improvement List-Archive: http://lists.mysql.com/mysql/223074 Message-Id: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary=000e0cd402c412e9c80490c596ab --000e0cd402c412e9c80490c596ab Content-Type: text/plain; charset=ISO-8859-1 Also, mailing list doesn't want to distribute attachments :-) Here's a link to the metrics view I was on about earlier: http://www.tuxera.be/mysqlstats.zip On Tue, Sep 21, 2010 at 4:08 PM, Johan De Meersman wrote: > > > On Tue, Sep 21, 2010 at 4:03 PM, wrote: > >> Quoting Johan De Meersman : >> >>> Your raid controller is "lying" to you - you can't have RAID10 with just >>> two >>> disks :-p Don't worry about that, though - it's a good enough config. >>> >> >> Good enough? If he is genuinely saturating the disk with IO (as he states >> the problem is IO) then it isnt good enough. But perhaps that needs a bit >> more analysis before we really know... > > > It takes quite some doing to fill a 15krpm RAID-1 with IO, all the way > through all the controller, OS and SQL caches. A lot more investigating is > needed before concluding that the symptom is indeed the cause. > > > > -- > Bier met grenadyn > Is als mosterd by den wyn > Sy die't drinkt, is eene kwezel > Hy die't drinkt, is ras een ezel > -- Bier met grenadyn Is als mosterd by den wyn Sy die't drinkt, is eene kwezel Hy die't drinkt, is ras een ezel --000e0cd402c412e9c80490c596ab--