pci express x4 = 2.5*4gbps = 10gbps not?! 2011/2/18 Phil Turmel <philip@xxxxxxxxxx>: > On 02/18/2011 04:31 AM, Simon Mcnair wrote: >> time passes. You are eaten by a Grue. Sheesh this is taking a long time. >> >> simon@proxmox:~$ top >> >> top - 09:26:19 up 20:36, 11 users, load average: 2.46, 2.49, 2.39 >> Tasks: 334 total, 9 running, 325 sleeping, 0 stopped, 0 zombie >> Cpu(s): 52.8%us, 9.4%sy, 0.0%ni, 35.2%id, 2.5%wa, 0.0%hi, 0.2%si, 0.0%st >> Mem: 12299244k total, 12227584k used, 71660k free, 11042868k buffers >> Swap: 11534332k total, 0k used, 11534332k free, 208204k cached >> >> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND >> 18896 root 20 0 12288 1072 460 S 63 0.0 431:16.55 ntfs-3g >> 18909 root 20 0 12288 1064 460 R 62 0.0 419:17.11 ntfs-3g >> 18920 root 20 0 12288 1100 492 R 62 0.0 428:17.33 ntfs-3g >> 9210 root 20 0 4068 520 328 S 54 0.0 661:59.92 gzip >> 9138 root 20 0 4068 524 328 R 53 0.0 647:29.07 gzip >> 9247 root 20 0 4068 524 328 S 53 0.0 651:28.36 gzip >> 25678 root 20 0 4068 524 328 R 52 0.0 439:49.20 gzip >> 24957 root 20 0 4068 524 328 R 51 0.0 437:44.01 gzip >> 25792 root 20 0 4068 524 328 S 48 0.0 433:28.14 gzip >> >> This is hardly touching the CPU on the box (in my opinion), any advice >> on using renice ? I've never used it before, but now seems like a >> good time ? > > Probably wouldn't help. > > You have a total usage of 65%. I suspect that each of the processors running gzip are nearly pegged, and everything else is loafing along. Hit '1' in top to show the CPU usage per-cpu. Single-threaded gzip is holding you back. > > If you had enough space for saving the partitions uncompressed, it would be much faster. The PCIe x4 interface on the SuperMicro has a theoretical performance of 1GByte/s, which would be ~ 125MB/s per drive. From what I've read, that card actually delivers ~ 75MB/s per drive when they're all busy. > > Phil > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- Roberto Spadim Spadim Technology / SPAEmpresarial -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
