ocfs2: version 1.2.3 Linux: RedHat EL 4 Kernel: 2.6.9-42.0.2.ELsmp top says a systemload of about 150 to 200 where no active processes are running; the 150 webserver processes are waiting of something... The waits in the top are below 2%.
The webserver stresstest is for knowing more about the amount of requests this webservercluster can handle at the same time. The stress program is "http_load" which does send 200 requests of about 25 weblinks in our CMS parallel. -- Stephan >>> Sunil Mushran <[EMAIL PROTECTED]> schrieb am 14.11.2006 um 03:27 in Nachricht <[EMAIL PROTECTED]>: > None of these locks are busy. So they should not be the cause of the > problem. > > Start with the version of ocfs2. Also, which kernel? > What does top say? Is some process spinning? > > Also, what does this stresstest entail? > > Stephan Hendl wrote: >> Hi, >> >> I use a cluster of 4 nodes with ocfs2 as a webserver cluster. During a > stresstest it occurs after a couple of minutes that the webserverprocesses > are ideling but the system load is extremely high (abou 150...200) where the > waits are very low. After that I cannot interrupt the webserver processes > anymore and in some directories a "ls -ls" comes not back - so it seems that > the file system has a problem. Only a reset of the server solves the problem > ;-(( >> >> In the debug mode I can find the following lines as an example: >> >> Lockres: D00000000000000000ccda0fcc1c07e Mode: Exclusive >> Flags: Initialized Attached >> RO Holders: 0 EX Holders: 0 >> Pending Action: None Pending Unlock Action: None >> Requested Mode: Exclusive Blocking Mode: Invalid >> >> Lockres: M00000000000000000ccda0fcc1c07e Mode: Exclusive >> Flags: Initialized Attached >> RO Holders: 0 EX Holders: 0 >> Pending Action: None Pending Unlock Action: None >> Requested Mode: Exclusive Blocking Mode: Invalid >> >> Lockres: D00000000000000000ccd9ffcc1c07d Mode: Exclusive >> Flags: Initialized Attached >> RO Holders: 0 EX Holders: 0 >> Pending Action: None Pending Unlock Action: None >> Requested Mode: Exclusive Blocking Mode: Invalid >> >> Lockres: M00000000000000000ccd9ffcc1c07d Mode: Exclusive >> Flags: Initialized Attached >> RO Holders: 0 EX Holders: 0 >> Pending Action: None Pending Unlock Action: None >> Requested Mode: Exclusive Blocking Mode: Invalid >> >> Could it be that two servers like to write to the same file and under heavy > load the clusterd processes cannot handle this? >> >> Regards und thanks, >> Stephan >> _______________________________________________ Ocfs2-users mailing list [email protected] http://oss.oracle.com/mailman/listinfo/ocfs2-users
