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Red Hat Bugzilla – Attachment 296800 Details for
Bug 436004
50-75 % drop in nfs-server rewrite performance compared to rhel 4.6+
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info for the rhel 51 client mounting the rhel46 nfs server
rhel51_rhel46.txt (text/plain), 2.35 KB, created by
Sandeep K. Shandilya
on 2008-03-04 20:52:06 UTC
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Description:
info for the rhel 51 client mounting the rhel46 nfs server
Filename:
MIME Type:
Creator:
Sandeep K. Shandilya
Created:
2008-03-04 20:52:06 UTC
Size:
2.35 KB
patch
obsolete
>iozone output on the nfs mount. > 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 04:34:16 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 38925 43511 61167 62053 >------------------------------------------------------ >nfsstat on rhel 4.6 server. >Server rpc stats: >calls badcalls badauth badclnt xdrcall >1052332 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 >524290 49% 524387 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% 2 0% 0 0% 3617 0% > >-------------------------------------------------------------------- >Mount options >172.16.64.166:/data/share /mnt/nfs nfs rw,vers=3,rsize=32768,wsize=32768,hard,proto=tcp,timeo=600,retrans=2,sec=sys,addr=172.16.64.166 0 0
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bug 436004
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