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Red Hat Bugzilla – Attachment 296812 Details for
Bug 436004
50-75 % drop in nfs-server rewrite performance compared to rhel 4.6+
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rhel 51 client mounting a rhel 51 server.
rhel51_rhel51.txt (text/plain), 2.43 KB, created by
Sandeep K. Shandilya
on 2008-03-04 21:38:55 UTC
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Description:
rhel 51 client mounting a rhel 51 server.
Filename:
MIME Type:
Creator:
Sandeep K. Shandilya
Created:
2008-03-04 21:38:55 UTC
Size:
2.43 KB
patch
obsolete
> Iozone: Performance Test of File I/O > Version $Revision: 3.291 $ > Compiled for 64 bit mode. > Build: linux > > Contributors:William Norcott, Don Capps, Isom Crawford, Kirby Collins > Al Slater, Scott Rhine, Mike Wisner, Ken Goss > Steve Landherr, Brad Smith, Mark Kelly, Dr. Alain CYR, > Randy Dunlap, Mark Montague, Dan Million, > Jean-Marc Zucconi, Jeff Blomberg, Benny Halevy, > Erik Habbinga, Kris Strecker, Walter Wong, Joshua Root. > > Run began: Wed Mar 5 05:04:26 2008 > > File size set to 8388608 KB > Record Size 64 KB > Command line used: iozone -S 1024 -s 8g -i 0 -i 1 -r 64k -f /mnt/nfs/test_file > Output is in Kbytes/sec > Time Resolution = 0.000001 seconds. > Processor cache size set to 1024 Kbytes. > Processor cache line size set to 32 bytes. > File stride size set to 17 * record size. > random random bkwd record stride > KB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread > 8388608 64 25912 11024 25619 25585 > >------------------------------------------------------------------------------------ > >nfsstat on rhel 51 server > >Server rpc stats: >calls badcalls badauth badclnt xdrcall >1056676 0 0 0 0 > >Server nfs v3: >null getattr setattr lookup access readlink >2 0% 5 0% 1 0% 12 0% 10 0% 0 0% >read write create mkdir symlink mknod >524289 49% 524484 49% 2 0% 0 0% 0 0% 0 0% >remove rmdir rename link readdir readdirplus >2 0% 0 0% 0 0% 0 0% 0 0% 0 0% >fsstat fsinfo pathconf commit >0 0% 3 0% 0 0% 7864 0% > >----------------------------------------------------------------------------------------------------- >mount options on the rhel 51 client. > >172.16.64.181:/data/share /mnt/nfs nfs rw,vers=3,rsize=32768,wsize=32768,hard,proto=tcp,timeo=600,retrans=2,sec=sys,addr=172.16.64.181 0 0
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