There is always the possibility of paging RAM to disk at any point for any bit of memory and this goes for something like pix_buffer or Pd's table/array too. Obviously, the machine needs to have not only the free memory for the RAM disk but a comfortable amount of headroom.
<br><br>The OSX memory manager won't always do the right thing, but one can try to minimize its stupidity. A lot of the kernel code is still based on assumptions about ancient hardware and non-existent server scenarios, and it certainly pays the price for it.
<br> <br><br><div><span class="gmail_quote">On 7/30/07, <b class="gmail_sendername">Max Neupert</b> <<a href="mailto:abonnements@revolwear.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">abonnements@revolwear.com
</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
hi,<br>some sources suggest that there is no or little advantage to use a<br>ramdisk in os x because the system caches data which has frequent<br>access anyway.<br>so a ramdisk can be counterproductive in a cenario where you have
<br>little ram:<br>lets say you have one gig memory. 300 mb are used by some<br>applications which are open, and another 300 by the system. now you<br>have a video in your ramdisk of also 300. the system tries to cache<br>
it because it wants to accellerate but can't allocate enough anymore<br>and data will be swaped on the harddisk..<br>so you end up with less performance and more harddrive access because<br>of the ramdisk..<br><br>i'm curious about your findings.
<br><br>greetings, m.<br><br><br><a href="http://lowendmac.com/x-basics/02/0201.html" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">http://lowendmac.com/x-basics/02/0201.html</a><br><a href="http://www.kernelthread.com/forums/viewtopic.php?t=138" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">
http://www.kernelthread.com/forums/viewtopic.php?t=138
</a><br><br><br></blockquote></div><br>