<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> <META content="MSHTML 6.00.2900.2627" name=GENERATOR></HEAD> <BODY> <DIV><FONT face="Courier New" size=2>> The problem is that a du -s takes about 6 minutes on either partition <BR>> every time the command is run. I've mounted the partitions with noatime. <BR>> Is this a normal time for GFS to do a du run on a 2TB partition? </FONT></DIV> <DIV><FONT face="Courier New" size=2></FONT> </DIV> <DIV><FONT face="Courier New" size=2>have you ever run `du -s` on a 2TB ext2<SPAN class=922453514-22062005>/ext3</SPAN> partition? how about xfs?</FONT></DIV> <DIV><FONT face="Courier New" size=2></FONT> </DIV> <DIV><FONT face="Courier New" size=2>i am no expert, but the way i understand things, du will travers<SPAN class=922453514-22062005>e </SPAN>the<BR>entire inode tree <SPAN class=922453514-22062005>via standard open, read, and lstat syscalls, </SPAN>and add all<SPAN class=922453514-22062005> </SPAN></FONT></DIV> <DIV><FONT><FONT face="Courier New"><FONT size=2>the file<SPAN class=922453514-22062005> </SPAN>sizes together. therefore, it<SPAN class=922453514-22062005> </SPAN>depends heavily on how many files<SPAN class=922453514-22062005> </SPAN></FONT></FONT></FONT></DIV> <DIV><FONT face="Courier New" size=2>are in the partition. overall, i<SPAN class=922453514-22062005> </SPAN>think 6 minutes is pretty good for a<SPAN class=922453514-22062005> </SPAN></FONT></DIV> <DIV><FONT face="Courier New" size=2>2TB partition.</FONT></DIV> <DIV><FONT face="Courier New" size=2></FONT> </DIV> <DIV><FONT face="Courier New" size=2>> When the command ran I noticed a lot of traffic on interface lo. This <BR>> seems logical as this node is also running the lockmanager. But what <BR>> bothers me is that the traffic does not acceed about 1,5 MB/s avarage. <BR>> The loopback interface should be able to handle much more so therefore <BR>> it looks that there some sort of bottleneck but I don't see it. Does <BR>> anybody have a clue? </FONT></DIV> <DIV><FONT face="Courier New" size=2></FONT> </DIV> <DIV><FONT face="Courier New" size=2>pardon my ignorance, i've never used redhat's cluster suite. however,<BR>what does only 1.5MB/s of traffic on lo have to do with anything? if<BR>it's running the lock manager and is doing local communication via lo,<BR>i think you should be alarmed <SPAN class=922453514-22062005>only </SPAN>if you were seeing a high amount of<SPAN class=922453514-22062005> </SPAN></FONT></DIV> <DIV><FONT face="Courier New" size=2>traffic<SPAN class=922453514-22062005> </SPAN>on lo. a crapload of traffic across <SPAN class=922453514-22062005>the</SPAN><SPAN class=922453514-22062005> loopback interface </SPAN>would<SPAN class=922453514-22062005> </SPAN></FONT></DIV> <DIV><FONT face="Courier New" size=2>indicate that the system was<SPAN class=922453514-22062005> </SPAN>sending itself data via <SPAN class=922453514-22062005>P</SPAN>F_INET sockets,<SPAN class=922453514-22062005> </SPAN></FONT></DIV> <DIV><FONT><FONT face="Courier New"><FONT size=2>which just seems like a Wrong Thing<SPAN class=922453514-22062005> </SPAN>To Do as far as efficiency is concerned.<SPAN class=922453514-22062005> </SPAN></FONT></FONT></FONT></DIV> <DIV><FONT><FONT face="Courier New"><FONT size=2><SPAN class=922453514-22062005></SPAN></FONT></FONT></FONT><FONT face="Courier New" size=2></FONT> </DIV> <DIV><FONT face="Courier New" size=2>again, i am very ignorant when it comes to RH cluster suite<SPAN class=922453514-22062005> (i have only</SPAN></FONT></DIV> <DIV><FONT><FONT face="Courier New"><FONT size=2><SPAN class=922453514-22062005>been on this list for ~3 weeks and have never used the product)</SPAN>, but i don't<SPAN class=922453514-22062005></SPAN></FONT></FONT></FONT></DIV> <DIV><FONT><FONT face="Courier New"><FONT size=2><SPAN class=922453514-22062005></SPAN>think anything is wrong with<SPAN class=922453514-22062005> </SPAN></FONT></FONT></FONT><FONT><FONT><FONT face="Courier New" size=2>your setup. it is my opinion that you are being<SPAN class=922453514-22062005> </SPAN></FONT></FONT></FONT></DIV> <DIV><FONT><FONT><FONT><FONT face="Courier New"><FONT size=2>overly paranoid. ;)<SPAN class=922453514-22062005> </SPAN></FONT></FONT></FONT></FONT></FONT></DIV> <DIV><FONT><FONT><FONT><FONT face="Courier New"><FONT size=2><SPAN class=922453514-22062005></SPAN></FONT></FONT></FONT></FONT></FONT> </DIV> <DIV><FONT><FONT><FONT><FONT face="Courier New"><FONT size=2><SPAN class=922453514-22062005>take it with a grain of salt, though. </SPAN></FONT></FONT></FONT></FONT></FONT></DIV> <DIV><FONT face="Courier New" size=2></FONT> </DIV> <DIV><FONT face="Courier New"><FONT size=2>-mike<SPAN class=922453514-22062005> </SPAN></FONT></FONT></DIV> <DIV><FONT face="Courier New"><FONT size=2><SPAN class=922453514-22062005> </SPAN></FONT></FONT></DIV></BODY></HTML>