hi ...
i've read an article from christoph hallwig in a german magazine (Linux
Magazin 1/2002) and see there, that jfs performance in the postmark
benchmark is very bad. i have done some tests for my own with
postmark ( http://people.redhat.com/arjanv/postmark-1_5RH.c ) because i
can't trust what i've read.
i've used a pentium III/700 with 512 MB RAM with kernel 2.4.17 / jfs
1.0.12 / xfs 1.0.2 and a seperate partition on a ide disk. i've always
done a mkfs before running postmark. i've not taken a lot of time to
look for the values representing the typical file system use or file
sizes, i've done only a test to check if the values can be true that
i've read.
and my results for jfs arn't also are not very good in contrast to
reiserfs/xfs.
i would ask in the round, if there are some changes in the pipeline
improving the performance to a level of XFS or Reiserfs ???
thanks
oliver
Results:
--------
PostMark v1.5RH : 2001/09/23
pm>set number 250
pm>set size 10000 2000000
pm>set transactions 1000
pm>set subdirectories 2
pm>set location /orademo4
-----------------------------------------------------------------------
JFS Run:
-----------------------------------------------------------------------
Creating subdirectories...Done
Creating files...Done
Performing transactions..........Done
Deleting files...Done
Deleting subdirectories...Done
Time:
146.729597 seconds total
110.131231 seconds of transactions (9.080076 per second)
Files:
771 created (5.254564 per second)
Creation alone: 250 files (10.452010 per second)
Mixed with transactions: 521 files (4.730720 per second)
472 read (4.285796 per second)
528 appended (4.794280 per second)
771 deleted (5.254564 per second)
Deletion alone: 292 files (23.029261 per second)
Mixed with transactions: 479 files (4.349357 per second)
Data:
561.04 megabytes read (3.82 megabytes per second)
933.51 megabytes written (6.36 megabytes per second)
pm>
-----------------------------------------------------------------------
reiserfs with disk format 3.5
-----------------------------------------------------------------------
Creating subdirectories...Done
Creating files...Done
Performing transactions..........Done
Deleting files...Done
Deleting subdirectories...Done
Time:
70.220904 seconds total
56.594918 seconds of transactions (17.669431 per second)
Files:
771 created (10.979636 per second)
Creation alone: 250 files (18.822397 per second)
Mixed with transactions: 521 files (9.205774 per second)
472 read (8.339971 per second)
528 appended (9.329460 per second)
771 deleted (10.979636 per second)
Deletion alone: 292 files (848.992693 per second)
Mixed with transactions: 479 files (8.463657 per second)
Data:
561.04 megabytes read (7.99 megabytes per second)
933.51 megabytes written (13.29 megabytes per second)
-----------------------------------------------------------------------
reiserfs with disk format 3.6
-----------------------------------------------------------------------
Creating subdirectories...Done
Creating files...Done
Performing transactions..........Done
Deleting files...Done
Deleting subdirectories...Done
Time:
69.888896 seconds total
55.312857 seconds of transactions (18.078979 per second)
Files:
771 created (11.031795 per second)
Creation alone: 250 files (17.594586 per second)
Mixed with transactions: 521 files (9.419148 per second)
472 read (8.533278 per second)
528 appended (9.545701 per second)
771 deleted (11.031795 per second)
Deletion alone: 292 files (795.373758 per second)
Mixed with transactions: 479 files (8.659831 per second)
Data:
561.04 megabytes read (8.03 megabytes per second)
933.51 megabytes written (13.36 megabytes per second)
-----------------------------------------------------------------------
XFS run
-----------------------------------------------------------------------
Creating subdirectories...Done
Creating files...Done
Performing transactions..........Done
Deleting files...Done
Deleting subdirectories...Done
Time:
72.655122 seconds total
58.094991 seconds of transactions (17.213188 per second)
Files:
771 created (10.611778 per second)
Creation alone: 250 files (17.595932 per second)
Mixed with transactions: 521 files (8.968071 per second)
472 read (8.124625 per second)
528 appended (9.088563 per second)
771 deleted (10.611778 per second)
Deletion alone: 292 files (828.834352 per second)
Mixed with transactions: 479 files (8.245117 per second)
Data:
561.04 megabytes read (7.72 megabytes per second)
933.51 megabytes written (12.85 megabytes per second)
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