On Dec 27, 2004, at 3:48 PM, Andrej Filipcic wrote:
Hi,
I have checked diskcache/memcache performance over an ADSL link.
The link has 4M download and 512k upload bandwidth. Although there are still
problems with disk cache, the copy from afs to local disk is good enough.
With disk cache the speed is ~400 kbyte/s (tcp speed is 500 kbyte/s).
Memcahe speed is much lower, between 120 and 160 kbyte/s, depending on the
fileserver. Is there any reason (bug) for such a big difference?
On gigabit network, the copy speed with memcache is never larger than 20
mbyte/s, with disk cache it can go up to 70 mbyte/s.
Can you provide more information on your measuring and test environment?
I suppose you didn't actually measured AFS performance when you got 70 MB/s with diskcache. That's pretty unlikely.
Horst
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