Kadlecsik Jozsef wrote:
What is glock_inode? Does it exist or something equivalent in
cluster-2.01.00?
Sorry, typo. What I mean is "inoded_secs" (gfs inode daemon wake-up
time). This is the daemon that reclaims deleted inodes. Don't set it too
small though.
Isn't GFS_GL_HASH_SIZE too small for large amount of glocks? Being too
small it results not only long linked lists but clashing at the same
bucket will block otherwise parallel operations. Wouldn't it help
increasing it from 8k to 65k?
Worth a try.
However, the issues involved here are more than lock searching time. It
also has to do with cache flushing. GFS currently accumulates too much
dirty caches. When it starts to flush, it will pause the system for too
long. Glock trimming helps - since cache flush is part of glock
releasing operation.
-- Wendy
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