On Tue, Sep 21, 2010 at 12:27:03AM -0400, Dave Cundiff wrote: > On Mon, Sep 20, 2010 at 9:19 PM, K. Richard Pixley <r...@noir.com> wrote: > > Do you have any kernel processes running constantly? Any taking near 100% > > of a CPU? > > > > --rich > > > > Now that I look again, it seems that the btrfs-cleaner process is > still running. CPU isn't much of an issue on this box. Its a dual quad > E5620. 8 cores, 16 threads. > Looks like most of my load is wait from the cleaner process hammering > the disks. I deleted about 10 snapshots I think. Should this take 4 > days to clean up from that?
It shouldn't but it depends on how much metadata we have to read in to process the snapshots. Could you do a few sysrq-w? We'll see where you are spending your time based on the traces. -chris > > Cpu0 : 0.0%us, 0.2%sy, 0.0%ni, 85.1%id, 14.7%wa, 0.0%hi, 0.0%si, 0.0%st > Cpu1 : 0.0%us, 0.4%sy, 0.0%ni, 66.9%id, 32.6%wa, 0.0%hi, 0.1%si, 0.0%st > Cpu2 : 0.0%us, 0.2%sy, 0.0%ni, 88.7%id, 11.1%wa, 0.0%hi, 0.0%si, 0.0%st > Cpu3 : 0.0%us, 0.1%sy, 0.0%ni, 96.7%id, 3.2%wa, 0.0%hi, 0.0%si, 0.0%st > Cpu4 : 0.0%us, 0.2%sy, 0.0%ni, 92.3%id, 7.5%wa, 0.0%hi, 0.0%si, 0.0%st > Cpu5 : 0.0%us, 0.1%sy, 0.0%ni, 97.6%id, 2.4%wa, 0.0%hi, 0.0%si, 0.0%st > Cpu6 : 0.0%us, 0.1%sy, 0.0%ni, 98.5%id, 1.5%wa, 0.0%hi, 0.0%si, 0.0%st > Cpu7 : 0.0%us, 0.0%sy, 0.0%ni, 99.8%id, 0.2%wa, 0.0%hi, 0.0%si, 0.0%st > Cpu8 : 0.0%us, 0.1%sy, 0.0%ni, 95.7%id, 4.3%wa, 0.0%hi, 0.0%si, 0.0%st > Cpu9 : 0.0%us, 1.6%sy, 0.0%ni, 30.2%id, 68.2%wa, 0.0%hi, 0.0%si, 0.0%st > Cpu10 : 0.0%us, 0.0%sy, 0.0%ni, 95.1%id, 4.8%wa, 0.0%hi, 0.0%si, 0.0%st > Cpu11 : 0.0%us, 0.0%sy, 0.0%ni, 99.6%id, 0.4%wa, 0.0%hi, 0.0%si, 0.0%st > Cpu12 : 0.0%us, 0.4%sy, 0.0%ni, 83.8%id, 15.7%wa, 0.0%hi, 0.0%si, 0.0%st > Cpu13 : 0.0%us, 0.0%sy, 0.0%ni, 98.1%id, 1.8%wa, 0.0%hi, 0.0%si, 0.0%st > Cpu14 : 0.0%us, 0.0%sy, 0.0%ni, 99.7%id, 0.3%wa, 0.0%hi, 0.0%si, 0.0%st > Cpu15 : 0.0%us, 0.0%sy, 0.0%ni, 99.8%id, 0.2%wa, 0.0%hi, 0.0%si, 0.0%st > > Time: 12:24:01 AM > Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz > avgqu-sz await svctm %util > sdb 16.25 6.49 127.45 330.65 1173.03 3946.46 > 11.18 70.55 154.01 2.13 97.71 > > Time: 12:24:21 AM > Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz > avgqu-sz await svctm %util > sdb 5.20 2.70 92.55 270.70 782.00 2795.20 > 9.85 70.12 189.42 2.69 97.85 > > Time: 12:24:41 AM > Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz > avgqu-sz await svctm %util > sdb 0.25 11.90 5.20 863.35 43.60 9391.60 > 10.86 144.84 168.01 1.15 100.00 > > Time: 12:25:01 AM > Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz > avgqu-sz await svctm %util > sdb 17.50 0.60 204.35 49.70 1776.00 524.00 > 9.05 18.64 74.23 3.74 95.03 > > -- > Dave Cundiff > System Administrator > A2Hosting, Inc > http://www.a2hosting.com > -- > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
