Only with NFS? I have a raid array of the same discs and the system just sometimes seems to hang completely (for a second or less) and then to go on again at a normal speed (110MB/s). I am running a SuSE 9.1 stock kernel (2.6.5-7.111-smp) on that machine.
On Monday 17 January 2005 21:06, you wrote: > When writing to or from the drive via NFS, after 1GB or 2GB, it "feels" > like the system slows to a crawl, the mouse gets very slow, almost like > one is burning a CD at 52X under PIO mode. I originally had this disk in > my main system with an Intel ICH5 chipset (ABIT IC7-G mobo) and a Pentium > 4 2.6GHZ w/HT and I could not believe the hit the system took when writing > over NFS. > > I put the drive on its own controller in another box to see if I could > replicate the problem. The drive is on a Promise 150TX2 Plus controller. > When writing locally on the disk, there is no problem. When writing to or > from the drive over NFS, the system becomes _very_ slow, df -h lags, the > system slows almost to a halt. I check /proc/interrupts and > /var/log/messages but no errors result. > > There is some type of system bottleneck when using NFS with this drive. > > All the file systems are XFS on all systems. > Can anyone offer any suggestions? > I cannot explain or find the cause of this. > > All systems are running 2.6.10. > > I have an excerpt of both using dd if=/dev/zero of=file.img (locally) and > from a remote computer (on a full duplex gigabit network) > > Locally: dd if=/dev/zero of=out.img > > vmstat output: > > procs -----------memory---------- ---swap-- -----io---- --system-- > ----cpu---- > r b swpd free buff cache si so bi bo in cs us sy > id wa > 1 0 412 4928 0 662612 0 0 0 0 1065 285 16 84 > 0 0 > 1 0 412 4608 0 662556 0 0 0 78932 1148 250 14 86 > 0 0 > 1 0 412 4672 0 662868 0 0 0 13 1068 274 16 84 > 0 0 > 1 0 412 5120 0 661644 0 0 0 78928 1116 245 13 87 > 0 0 > 1 0 412 4460 0 663020 0 0 0 0 1098 254 15 85 > 0 0 > 1 0 412 5376 0 660936 0 0 0 78932 1073 279 14 86 > 0 0 > 1 0 412 5376 0 662124 0 0 0 17 1147 267 18 82 > 0 0 > 2 0 412 5376 0 661580 0 0 44 31901 1052 286 15 85 > 0 0 > 1 0 412 5440 0 661740 0 0 48 47048 1168 265 15 85 > 0 0 > 1 0 412 5312 0 662152 0 0 4 14 1048 260 16 84 > 0 0 > 1 0 412 4664 0 662196 0 0 4 78941 1143 282 15 85 > 0 0 > 2 0 412 4600 0 662932 0 0 0 0 1104 251 14 86 > 0 0 > 1 0 412 5048 0 661448 0 0 0 78954 1111 269 16 84 > 0 0 > 1 0 412 5368 0 662120 0 0 0 0 1140 250 17 83 > 0 0 > 1 0 412 5432 0 660648 0 0 0 78928 1075 260 16 84 > 0 0 > 1 0 412 5176 0 662224 0 0 4 0 1217 266 14 86 > 0 0 > 1 0 412 5432 0 662104 0 0 0 0 1078 274 16 84 > 0 0 > 1 0 412 4984 0 662084 0 0 0 78932 1189 245 12 88 > 0 0 > 1 0 412 5440 0 662012 0 0 0 13 1080 271 17 83 > 0 0 > 1 0 412 5440 0 661168 0 0 0 78928 1109 242 14 86 > 0 0 > 1 0 412 5248 0 662232 0 0 0 0 1104 270 13 87 > 0 0 > > Remotely (writing over NFS, using NFS v3, not using direct I/O) > > vmstat output: > > procs -----------memory---------- ---swap-- -----io---- --system-- > ----cpu---- > r b swpd free buff cache si so bi bo in cs us sy > id wa > 1 0 596 4624 0 662460 0 0 0 448 4037 1099 1 99 > 0 0 > 1 0 596 4796 0 661564 0 0 0 96067 2877 788 1 75 > 0 24 > 0 0 596 5496 0 661692 0 0 0 160 2297 517 0 44 > 56 0 > 1 0 596 4824 0 662840 0 0 24 633 3896 1147 1 98 > 1 0 > 1 0 596 4696 0 662536 0 0 0 416 3987 1075 1 99 > 0 0 > 1 0 596 4892 0 662344 0 0 0 448 3746 1142 0 99 > 1 0 > 0 0 596 5868 0 660468 0 0 0 96064 3550 973 1 97 > 1 1 > 2 0 596 4600 0 663328 0 0 0 318 3390 823 1 71 > 28 0 > 1 0 596 5432 0 662336 0 0 0 448 3872 1066 0 100 > 0 0 > 1 0 596 5360 0 661888 0 0 0 453 3951 1144 1 99 > 0 0 > 1 0 596 4936 0 661568 0 0 0 94225 2942 726 0 75 > 7 18 > 1 0 596 4528 0 662944 0 0 0 259 2984 738 1 64 > 35 0 > 1 0 596 5368 0 661864 0 0 8 639 4234 1116 1 99 > 0 0 > 2 0 596 5368 0 662140 0 0 0 448 3919 1086 0 100 > 0 0 > 0 0 596 5512 0 662860 0 0 4 256 2747 650 0 56 > 43 1 > 0 0 596 5520 0 662860 0 0 0 0 1061 144 3 2 > 95 0 > 1 0 596 4688 0 663404 0 0 0 64 1455 312 0 13 > 87 0 > 1 0 596 5324 0 661964 32 0 40 96489 3325 921 1 88 > 11 0 > 1 0 596 4656 0 662852 24 0 144 1093 2228 650 1 38 > 58 3 > 1 0 596 4592 0 662648 0 0 0 448 3852 1098 0 99 > 1 0 > 1 0 596 5304 0 662232 0 0 0 448 3972 1100 1 99 > 0 0 > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to [EMAIL PROTECTED] > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
