Tim Moore wrote:
When I observed the IO status, I saw that I could probably write the file by hand faster than the 2nd node was writing the files to the server. I would have to check but I think the mobo has integrated broadcom ethernet. I have tried the usual tweaks with respect to rsize and wsize and performance seemed to worsen if it changed at all.
What values of rsize and wsize? My experience is with UDP whereas you use TCP, but in any case, my experience is the following, for autofs rsize=4096,wsize=4096 works well and larger values cause too much overhead with fragmented packets. Also, in my experience the fragmented packet problem only occured for large files. For a continuous tranfer, the I/O is fast for the first few seconds then the traffic-jam. best regards, Alan -- Centro di Ricerca, Sviluppo e Studi Superiori in Sardegna Center for Advanced Studies, Research, and Development in Sardinia Postal Address: | Physical Address for FedEx, UPS, DHL: --------------- | ------------------------------------- Alan Scheinine | Alan Scheinine c/o CRS4 | c/o CRS4 C.P. n. 25 | Loc. Pixina Manna Edificio 1 09010 Pula (Cagliari), Italy | 09010 Pula (Cagliari), Italy Email: [EMAIL PROTECTED] Phone: 070 9250 238 [+39 070 9250 238] Fax: 070 9250 216 or 220 [+39 070 9250 216 or +39 070 9250 220] Operator at reception: 070 9250 1 [+39 070 9250 1] Mobile phone: 347 7990472 [+39 347 7990472] _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
