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authorJens Axboe <axboe@suse.de>2005-09-09 21:10:58 +0200
committerJens Axboe <axboe@suse.de>2005-09-09 21:10:58 +0200
commit32fb90fe444885af9fbb73ae96ccd222c0e814bf (patch)
tree777124d861d8acd32e5a82886f20e04eae4832ee /README
parent51128a28b99cef8d8b830dc36d9284f9bb85e0cf (diff)
downloadblktrace-32fb90fe444885af9fbb73ae96ccd222c0e814bf.tar.gz
blktrace-32fb90fe444885af9fbb73ae96ccd222c0e814bf.tar.bz2
[PATCH] README: document the -t option
Diffstat (limited to 'README')
-rw-r--r--README4
1 files changed, 3 insertions, 1 deletions
diff --git a/README b/README
index 31dd29a..5d4f5a8 100644
--- a/README
+++ b/README
@@ -41,12 +41,14 @@ Usage
--- Generates:
<output>_out.[0..ncpus] : Contains binary trace data
- % blkparse -i <input> [-o <output> -s]
+ % blkparse -i <input> [-o <output> -s -t]
--- Generates:
<output>.log : Contains formatted trace data, if
output logging is added with the -o option. Otherwise, the
output is sent to stdout. If the -s option is used, in
addition to per-CPU stats, per process stats are shown as well.
+ The -t option will provide individual io statistics, displaying
+ things like completion time, queueing time, etc.
If you want to do live tracing, you can pipe the data between blktrace