> On Fri, Sep 26, 2008 at 10:04:16AM +0300, Danny Braniss wrote: > > Hi, > > There seems to be some serious degradation in performance. > > Under 7.0 I get about 90 MB/s (on write), while, on the same machine > > under 7.1 it drops to 20! > > Any ideas? > > 1) Network card driver changes, could be, but at least iperf/tcp is ok - can't get udp numbers, do you know of any tool to measure udp performance? BTW, I also checked on different hardware, and the badness is there. > > 2) This could be relevant, but rwatson@ will need to help determine > that. > > http://lists.freebsd.org/pipermail/freebsd-stable/2008-September/045109.html
gut feeling is that it's somewhere else: Writing 16 MB file BS Count /---- 7.0 ------/ /---- 7.1 -----/ 1*512 32768 0.16s 98.11MB/s 0.43s 37.18MB/s 2*512 16384 0.17s 92.04MB/s 0.46s 34.79MB/s 4*512 8192 0.16s 101.88MB/s 0.43s 37.26MB/s 8*512 4096 0.16s 99.86MB/s 0.44s 36.41MB/s 16*512 2048 0.16s 100.11MB/s 0.50s 32.03MB/s 32*512 1024 0.26s 61.71MB/s 0.46s 34.79MB/s 64*512 512 0.22s 71.45MB/s 0.45s 35.41MB/s 128*512 256 0.21s 77.84MB/s 0.51s 31.34MB/s 256*512 128 0.19s 82.47MB/s 0.43s 37.22MB/s 512*512 64 0.18s 87.77MB/s 0.49s 32.69MB/s 1024*512 32 0.18s 89.24MB/s 0.47s 34.02MB/s 2048*512 16 0.17s 91.81MB/s 0.30s 53.41MB/s 4096*512 8 0.16s 100.56MB/s 0.42s 38.07MB/s 8192*512 4 0.82s 19.56MB/s 0.80s 19.95MB/s 16384*512 2 0.82s 19.63MB/s 0.95s 16.80MB/s 32768*512 1 0.81s 19.69MB/s 0.96s 16.64MB/s Average: 75.86 33.00 the nfs filer is a NetWork Appliance, and is in use, so i get fluctuations in the measurements, but the relation are similar, good on 7.0, bad on 7.1 Cheers, danny _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"