Please see my responses inline. I am seeing this behavior again. On Tue, Aug 25, 2015 at 4:43 PM, Dave Chinner <david@xxxxxxxxxxxxx> wrote: > On Tue, Aug 25, 2015 at 04:09:33PM -0700, Shrinand Javadekar wrote: >> I did this on 2 different setups. > > Details? [Shri] On hardware box 1: 1. # of disks: 23 2. Type: Rotational disks 3. Ran mkfs.xfs and mounted disks 4. Installed Swift 5. Ran benchmark 6. Stopped Swift 7. unmounted disks 8. mkfs.xfs -f on all 23 disks 9. mounted disks 10. Installed Swift 11. Ran benchmark Benchmark #s are as reported earlier. The same steps mentioned above were performed on hardware box #2. > >> Formatted the new disks with mkfs.xfs. Ran the workload. >> Reformatted the disks with mkfs.xfs -f. Ran the workload. >> >> > >> >> Any ideas why this might be happening? >> > >> > With the paucity of information you've provided, nope! >> >> Apologies. What more information can I provide? > > http://xfs.org/index.php/XFS_FAQ#Q:_What_information_should_I_include_when_reporting_a_problem.3F [Shri] I mentioned this in my first email. Here's the information: http://oss.sgi.com/archives/xfs/2015-06/msg00108.html > >> > What version of xfsprogs are you using? >> >> # xfs_repair -V >> xfs_repair version 3.1.9 > > That's pretty old. [Shri] We're using xfs progs version 3.1.9 whereas the kernel is newer one: 3.16.0-38-generic. Does that matter? For e.g. one of my colleagues found that the formatting with crc enabled is only available in newer version of xfsprogs. > >> > What was the output of mkfs.xfs each time; did the geometry differ? >> >> I have the output of xfs_info /mount/point from the first experiment >> and that of mkfs.xfs -f. One difference I see is that reformatting >> adds projid32bit=0 for the inode section. > > xfs_info didn't get projid32bit status output until 3.2.0. > > Anyway, please post the output so we can see the differences for > ourselves. What we need is mkfs output in both cases, and xfs_info > output in both cases after mount. Step 1: mkfs.xfs Good formatting: http://pastie.org/private/new2zmwvdqvgm7h7coc4g else: meta-data=/dev/mapper/35000c50062e6a567-part2 isize=256 agcount=4, agsize=183141504 blks = sectsz=512 attr=2, projid32bit=0 data = bsize=4096 blocks=732566016, imaxpct=5 = sunit=0 swidth=0 blks naming =version 2 bsize=4096 ascii-ci=0 log =internal log bsize=4096 blocks=357698, version=2 = sectsz=512 sunit=0 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 Step 2: xfs_info meta-data=/dev/mapper/35000c50062e6a567-part2 isize=256 agcount=4, agsize=183141504 blks = sectsz=512 attr=2 data = bsize=4096 blocks=732566016, imaxpct=5 = sunit=0 swidth=0 blks naming =version 2 bsize=4096 ascii-ci=0 log =internal bsize=4096 blocks=357698, version=2 = sectsz=512 sunit=0 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 Step 3: Ran the benchmark (each run of 20GB) Bandwidth (KB/s): 62294.9 Bandwidth (KB/s): 34407.7 Bandwidth (KB/s): 26949.8 Step 4: mkfs.xfs -f Good formatting: http://pastie.org/private/bmzfateuuneddwg1zgymq else: meta-data=/dev/mapper/35000c50062e6a567-part2 isize=256 agcount=4, agsize=183141504 blks = sectsz=512 attr=2, projid32bit=0 data = bsize=4096 blocks=732566016, imaxpct=5 = sunit=0 swidth=0 blks naming =version 2 bsize=4096 ascii-ci=0 log =internal log bsize=4096 blocks=357698, version=2 = sectsz=512 sunit=0 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 Step 5: xfs_info meta-data=/dev/mapper/35000c50062e6a567-part2 isize=256 agcount=4, agsize=183141504 blks = sectsz=512 attr=2 data = bsize=4096 blocks=732566016, imaxpct=5 = sunit=0 swidth=0 blks naming =version 2 bsize=4096 ascii-ci=0 log =internal bsize=4096 blocks=357698, version=2 = sectsz=512 sunit=0 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 Step 6: Ran the same Benchmark (each run of 20GB): Bandwidth (KB/s): 97061.6 Bandwidth (KB/s): 42811.7 Bandwidth (KB/s): 32111.7 -Shri > > Cheers, > > Dave. > -- > Dave Chinner > david@xxxxxxxxxxxxx _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
