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diff --git a/zarb-ml/mageia-dev/attachments/20111219/a1f6de06/attachment-0001.html b/zarb-ml/mageia-dev/attachments/20111219/a1f6de06/attachment-0001.html new file mode 100644 index 000000000..9a6d8c43f --- /dev/null +++ b/zarb-ml/mageia-dev/attachments/20111219/a1f6de06/attachment-0001.html @@ -0,0 +1,73 @@ +<html> + <head> + + <meta http-equiv="content-type" content="text/html; charset=UTF-8"> + </head> + <body bgcolor="#FFFFFF" text="#000000"> + Florian reads both lists, so I'm pretty sure this would have been + mentioned somewhere in Mageia-land, but I want to add that I have + experienced extreme delays in firefox and other apps when I run + largely IO-intensive apps with large file buffersizes, and the + workaround in this comment fixes this completely. We should + consider this for our kernels if we haven't already.<br> + <br> + -------- Original Message -------- + <table class="moz-email-headers-table" border="0" cellpadding="0" + cellspacing="0"> + <tbody> + <tr> + <th align="RIGHT" nowrap="nowrap" valign="BASELINE">Subject: </th> + <td>Re: [Cooker] System can stall under heavy IOs with slow + storage devices</td> + </tr> + <tr> + <th align="RIGHT" nowrap="nowrap" valign="BASELINE">Date: </th> + <td>Mon, 19 Dec 2011 19:36:02 +0100</td> + </tr> + <tr> + <th align="RIGHT" nowrap="nowrap" valign="BASELINE">From: </th> + <td>Florian Hubold <a class="moz-txt-link-rfc2396E" href="mailto:doktor5000@arcor.de"><doktor5000@arcor.de></a></td> + </tr> + <tr> + <th align="RIGHT" nowrap="nowrap" valign="BASELINE">Reply-To: + </th> + <td><a class="moz-txt-link-abbreviated" href="mailto:cooker@mandrivalinux.org">cooker@mandrivalinux.org</a></td> + </tr> + <tr> + <th align="RIGHT" nowrap="nowrap" valign="BASELINE">To: </th> + <td><a class="moz-txt-link-abbreviated" href="mailto:cooker@mandrivalinux.org">cooker@mandrivalinux.org</a></td> + </tr> + </tbody> + </table> + <br> + <br> + <pre>Am 19.12.2011 10:26, schrieb Franck Bui: +> Hello, +> +> I've noticed a regression on my system which can stall some applications +> (most notably firefox) during very very long time (> 10 mins). +Man, you're my hero, trying to find out what causes this since some months now. +At least two thumbs up! :) +> It's apparently related to transparent huge pages and I found that it +> had already been described by LWN here a month ago: +> <a class="moz-txt-link-freetext" href="http://lwn.net/Articles/467328/">http://lwn.net/Articles/467328/</a>. +> +> Unlike what it's stated in the article, the regression is not really +> hard to trigger in my case: just plug a USB stick, copy on it a big +> file, then try to use firefox... +> +> To fix this, simply try to disable THP: +> +> echo madvise >/sys/kernel/mm//transparent_hugepage/enabled +> +> and firefox should work as expected now. +> +> So, if no one objects, the plan is to simply default the THP stuff to +> "madvise" for desktop flavour where an application has to ask +> explicitly huge page otherwise it will be disabled. +> + + +</pre> + </body> +</html> |