Changes between Version 21 and Version 22 of Performance

Timestamp:

2007-12-19T02:12:45Z (17 years ago)

Author:

warner

Comment:

add another set of load-testing results, with 1MB mean file size

Performance

@@ -134 +134 @@
 its hosts.
 
+=== test one: 10kB mean file size ===
+
 Preliminary results on the Allmydata test grid (14 storage servers spread
 across four machines (each a 3ishGHz P4), two web servers): we used three
@@ -159 +161 @@
 200Kbps and rose to about 1Mbps at the end.
 
+=== test two: 1MB mean file size ===
+
+Same environment as before, but the mean file size was set to 1MB instead of
+10kB.
+
+{{{
+clients: 2MBps down, 340kBps up, 1.37 fps down, .36 fps up
+tahoecs2: 60% CPU, 14Mbps out, 11Mbps in, load avg .74  (web server)
+tahoecs1: 78% CPU, 7Mbps out, 17Mbps in, load avg .91  (web server)
+tahoebs4: 26% CPU, 4.7Mbps out, 3Mbps in, load avg .50  (storage server)
+tahoebs5: 34% CPU, 4.5Mbps out, 3Mbps in  (storage server)
+}}}
+
+Load is about the same as before, but of course the bandwidths are larger.
+For this file size, the per-file overhead seems to be more of a limiting
+factor than per-byte overhead.
+
 === initial conclusions ===