Hi Bruce-
I noticed that one of my tests takes about 4x longer on NFSv4.0 than it does on NFSv3 or NFSv4.[12]. As an initial stab at the cause, I'm seeing lots of these:
<...>-283894 [003] 4060.507314: nfs4_xdr_status: task:51308@5 xid=0x1ec806a9 error=-10008 (DELAY) operation=34
<...>-283894 [003] 4060.507338: nfs4_setattr: error=-10008 (DELAY) fileid=00:27:258012 fhandle=0x25ef273d stateid=0:0x7bd5c66f
<...>-283982 [006] 4060.508134: nfs4_state_mgr: hostname=klimt.ib clp state=CHECK_LEASE|0x4020
NFSv4-6239 [007] 4060.508137: nfs4_cb_recall: error=0 (OK) fileid=00:27:258012 fhandle=0x25ef273d stateid=1:0x910c8d4c dstaddr=klimt.ib
The workload is the git regression suite, which I run like this on a single client:
--- mount test export ---
$ cd /mnt; rm -rf git*; tar zvxf ~/Downloads/git-2.23.0.tar.gz
--- remount test export ---
$ cd /mnt/git*; make clean; make -j12
--- remount test export ---
$ cd /mnt/git*; make -j12 test
--
Chuck Lever
