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Gzip with -z option not using zedc engine


#1

Hello,
it seems that the -z option of gzip does not use the zedc engine.
here is a test gzip and gzip -z
Our system is z/OS 2.2

Do you have any idea what I could have done as an error ?

SI1042H@CNPP:/CNPP/SFTPDIR/stprodp/fichier/nm> uname -a
OS/390 CNPP 25.00 04 3906

SI1042H@CNPP:/CNPP/SFTPDIR/stprodp/fichier/nm> gzip -V
gzip 1.6 (Feb 4 2016)
Copyright © 2015 Rocketsowtware, Inc.
Copyright © 2007, 2010, 2011 Free Software Foundation, Inc.
Copyright © 1993 Jean-loup Gailly.

Test1 : gzip standard
SI1042H@CNPP:/CNPP/SFTPDIR/stprodp/fichier/nm> ./testgzip1.sh
-rw-r–r--+ 1 SI1042H OMVSGRP 4000000000 Oct 23 16:29 xab
gzip -cv xab >xab.gz
Start : Wed Oct 24 15:35:18 DFT 2018
xab: 95.9%

real 1m51.01s
user 1m 9.83s
sys 0m23.27s
End : Wed Oct 24 15:37:09 DFT 2018
-rw-r–r--+ 1 SI1042H OMVSGRP 4000000000 Oct 23 16:29 xab
-rw-r–r--+ 1 SI1042H OMVSGRP 164507817 Oct 24 15:37 xab.gz

Test2 : gzip zedc
SI1042H@CNPP:/CNPP/SFTPDIR/stprodp/fichier/nm> ./testgzip2.sh
-rw-r–r--+ 1 SI1042H OMVSGRP 4000000000 Oct 23 16:30 xac
gzip -cvz xac >xac.gz
Start : Wed Oct 24 15:38:01 DFT 2018
xac: [ zEDC | stream : software | buff : software ] 95.8%

real 2m25.84s
user 1m22.60s
sys 0m27.53s
End : Wed Oct 24 15:40:27 DFT 2018
-rw-r–r--+ 1 SI1042H OMVSGRP 4000000000 Oct 23 16:30 xac
-rw-r–r--+ 1 SI1042H OMVSGRP 168952791 Oct 24 15:40 xac.gz
SI1042H@CNPP:/CNPP/SFTPDIR/stprodp/fichier/nm>


#2

Hi,
Could you try with gzip-1.9-edc_b002.180703.tar, please?


#3

Hello Tatiana,
Thanks for your feedback.
The gzip -z option of gzip.1.9 does not seem to use the zedc engine.
Here is the log dans unix services:

Test gzip standard
-rw-r–r--+ 1 SI1042H OMVSGRP 4000000000 Oct 23 16:29 xab
gzip 1.9-edc
build 002, Jul 3 2018
zlib version: 1.2.7-zEDC, ZLIB_VERSION: 1.2.7
z/OS libtag version: 0.09
Copyright © 2015, 2018 Rocket Software
gzip -cv xab >xab.gz
Tue Oct 30 15:19:31 NFT 2018
xab:
95.9%

real 2m10.52s
user 1m 7.15s
sys 0m22.38s
Tue Oct 30 15:21:42 NFT 2018
-rw-r–r--+ 1 SI1042H OMVSGRP 4000000000 Oct 23 16:29 xab
-rw-r–r--+ 1 SI1042H OMVSGRP 164507823 Oct 30 15:21 xab.gz

Test gzip zedc
export _HZC_COMPRESSION_METHOD=hardware
-rw-r–r--+ 1 SI1042H OMVSGRP 4000000000 Oct 23 16:30 xac
gzip 1.9-edc
build 002, Jul 3 2018
zlib version: 1.2.7-zEDC, ZLIB_VERSION: 1.2.7
z/OS libtag version: 0.09
Copyright © 2015, 2018 Rocket Software
gzip -cvz xac >xac.gz
Tue Oct 30 15:21:42 NFT 2018
xac: [ zEDC | stream : software | buff : software ] 95.8%

real 1m55.43s
user 1m15.95s
sys 0m25.31s
Tue Oct 30 15:23:37 NFT 2018
-rw-r–r--+ 1 SI1042H OMVSGRP 4000000000 Oct 23 16:30 xac
-rw-r–r--+ 1 SI1042H OMVSGRP 168952791 Oct 30 15:23 xac.gz

Here is the log z/OS:
D IQP
IQP066I 15.21.06 DISPLAY IQP 294
zEDC Information
MAXSEGMENTS: 4 (64M)
Previous MAXSEGMENTS: N/A
Allocated segments: 1 (16M)
Used segments: 0 (0M)
DEFMINREQSIZE: 4K
INFMINREQSIZE: 16K
Feature Enablement: Enabled
D PCIE
IQP022I 15.21.13 DISPLAY PCIE 296
PCIE 0012 ACTIVE
PFID DEVICE TYPE NAME STATUS ASID JOBNAME CHID VFN PN
00000105 Hardware Accelerator ALLC 0013 FPGHWAM 0208 0005
00000205 Hardware Accelerator ALLC 0013 FPGHWAM 0138 0005