From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <1808dc12a2ce7a6966c7f3128cfb8bb0@felloff.net> Date: Sun, 8 Jun 2014 19:15:47 +0200 From: cinap_lenrek@felloff.net To: 9fans@9fans.net In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Subject: Re: [9fans] duppage Topicbox-Message-UUID: f7d57216-ead8-11e9-9d60-3106f5b1d025 i get consistent results with iostats for building pc64. (on amd64) 166 192 104916 0 0 /bin/rc 4 90 343308 0 0 /bin/awk 37 51 51280 0 0 /bin/echo 17 43 103786 0 0 /bin/sed 3 17 51567 0 0 /bin/ls 3 12 34624 0 0 /bin/grep 13 24 40114 0 0 /bin/cp 1 6 19112 0 0 /bin/pwd 4 15 40658 0 0 /bin/xd 128 192 263785 0 0 /bin/6c 5 34 113149 0 0 /bin/6l 4 27 89551 0 0 /bin/6a 1 10 33360 0 0 /bin/mkdir 2 9 22016 0 0 /bin/dd 4 18 55085 0 0 /bin/strip 1 17 62301 0 0 /bin/mkpaqfs 4 14 33797 0 0 /bin/rm 2 3 121 0 0 /bin/membername 2 15 46432 0 0 /bin/tr 1 19 72544 0 0 /bin/ar 1 4 10992 0 0 /bin/cat 2 24 86580 0 0 /bin/hoc 4 26 86433 0 0 /bin/file 4 13 33439 0 0 /bin/aux/data2s 1 7 23488 0 0 /bin/date 1 14 49502 0 0 /bin/size 1 25 94969 0 0 /bin/mk i made a small test trying running echo 1,2,3 and 4 times and i get exactly one additional read per exec (which is the read of the file header) all the other pages are cached. with MCACHE mount, it is exactly the same amount of reads no matter how often i run it. :) but thats not loaded. is your machine starved of memory? my guess would be that the cached pages getting uncached and reused in your case. i remember fixing some bugs in imagereclaim that could potentially cause this. but thats all speculation... theres a statistics struct there that you can peek on from acid -k and see how often imagereclaim runs between your test passes. -- cinap