Here is a recent JIRA related to disabling Nagle's : https://issues.apache.org/jira/browse/HBASE-11492
FYI On Jul 3, 2014, at 11:05 AM, Ted Yu <[email protected]> wrote: > bq. disabled Nagle's > > True. See HBASE-7008 > > Cheers > > > On Thu, Jul 3, 2014 at 8:32 AM, lars hofhansl <[email protected]> wrote: >> Note that in order to compare apples to apples the instances should be >> configured the same. >> 0.98 increases the block cache to 40% by default, enables scanner caching by >> default, and disabled Nagle's (I think). >> The same config changes should be done to 0.94 (unless we truly want to >> compare the out of the box configurations). >> >> >> -- Lars >> >> >> >> ________________________________ >> From: Jean-Marc Spaggiari <[email protected]> >> To: dev <[email protected]>; lars hofhansl <[email protected]> >> Sent: Thursday, July 3, 2014 6:10 AM >> Subject: Re: [VOTE] The 1st hbase 0.94.21 release candidate is available for >> download >> >> >> >> Here are the perfs tests results. Someone on the user list asked few days >> ago about perfs between 0.94 and 0.98. So I have put also 0.98 on my results >> here. Basically, as I said yesterday, no negativ perf impact for 0.94.21. >> Each test run 10 times (except the last 4) and I remove the 2 extremes. >> >> JM >> >> >> >> 0.94.20 0.94.21 0.98.2 >> FilteredScanTest 0,23 0,22 0,25 >> RandomReadTest 808 815 1 107 >> RandomSeekScanTest 172 169 201 >> RandomScanWithRange10Test 286 279 277 >> RandomScanWithRange100Test 147 145 161 >> RandomScanWithRange1000Test 38,22 37,27 50 >> SequentialReadTest 1 217 1 199 1 392 >> SequentialWriteTest 13 732 13 391 19 455 >> RandomWriteTest 14 091 13 642 19 708 >> GaussianRandomReadBenchmark 9 404 9 435 10 777 >> SequentialReadBenchmark 2 938 638 3 074 815 3 335 239 >> SequentialWriteBenchmark 912 469 913 573 833 654 >> UniformRandomReadBenchmark 10 299 10 358 11 762 >> UniformRandomSmallScan 233 583 234 083 277 850 >> LoadTestTool real 19m30.113s >> user 37m12.300s >> sys 11m19.224s real 19m26.099s >> user 36m1.740s >> sys 11m41.704s real 14m40.709s >> user 28m56.892s >> sys 12m6.364s >> IntegrationTestLoadAnVerify real 4m11.269s >> user 1m32.904s >> sys 0m7.176s real 4m7.288s >> user 1m31.704s >> sys 0m6.780s real 2m38.295s >> user 1m24.500s >> sys 0m6.036s >> HLogPerformanceEvaluation 10431,988 10629,025 n/a >> IntegrationTestBigLinkedList real 6m0.125s >> user 3m0.004s >> sys 0m11.312s real 6m17.616s >> user 2m58.684s >> sys 0m10.492S real 9m9.284s >> user 3m31.576s >> sys 0m19.828s >> >> >> >> >> 2014-07-02 21:22 GMT-04:00 Jean-Marc Spaggiari <[email protected]>: >> >> >> >> So far performances are similar to 0.94.21. So green from my side too. I >> will post detailed results later tonight or tomorrow morning. >> > >> >JM >> > >> > >> > >> > >> >2014-07-02 18:29 GMT-04:00 lars hofhansl <[email protected]>: >> > >> > >> >Thanks Ted & Andy. >> >>With my +1 we have the required 3 binding votes, will release 0.94.21 >> >>tomorrow. >> >> >> >>-- Lars >> >> >> >> >> >> >> >>________________________________ >> >> From: Ted Yu <[email protected]> >> >>To: "[email protected]" <[email protected]> >> >>Sent: Wednesday, July 2, 2014 1:25 PM >> >> >> >>Subject: Re: [VOTE] The 1st hbase 0.94.21 release candidate is available >> >>for download >> >> >> >> >> >> >> >>+1 >> >> >> >>Checked md5 sum >> >>Checked signature >> >>Apache RAT check passes. >> >>Unit test suite passed (using jdk 1.7.0_25) >> >> >> >>Cheers >> >> >> >> >> >> >> >> >> >> >> >>On Wed, Jul 2, 2014 at 1:19 PM, Andrew Purtell <[email protected]> wrote: >> >> >> >>> +1 >> >>> >> >>> MD5 sum is good >> >>> Signature is good >> >>> Unpacked tarball, structure looks good. >> >>> Ran Apache RAT, check passed**. >> >>> Local compile and build was successful (with 7u60) >> >>> Unit test suite passes 10 times out of 10 >> >>> Ran LoadTestTool, no errors, logs look good. >> >>> >> >>> ** - You have to remove docs/ and generated web.xml files under >> >>> hbase-webapps/ first. Going forward I think we should release a source >> >>> only >> >>> tarball and a second -bin "binary convenience" artifact. >> >>> >> >>> >> >>> >> >>> On Fri, Jun 27, 2014 at 2:20 PM, lars hofhansl <[email protected]> wrote: >> >>> >> >>> > The 1st 0.94.21 RC is available for download at >> >>> > http://people.apache.org/~larsh/hbase-0.94.21-rc0/ >> >>> > Signed with my code signing key: C7CFE328 >> >>> > >> >>> > 0.94 development is continuing to wind down, HBase 0.94.21 is a small >> >>> > bug >> >>> > fix release with 9 fixes: >> >>> > [HBASE-10692] - The Multi TableMap job don't support the security >> >>> > HBase cluster >> >>> > [HBASE-11052] - Sending random data crashes thrift service >> >>> > [HBASE-11096] - stop method of Master and RegionServer coprocessor >> >>> > is >> >>> > not invoked >> >>> > [HBASE-11234] - FastDiffDeltaEncoder#getFirstKeyInBlock returns >> >>> > wrong >> >>> > result >> >>> > [HBASE-11341] - ZKProcedureCoordinatorRpcs should respond only to >> >>> > members >> >>> > [HBASE-11414] - Backport to 0.94: HBASE-7711 rowlock release >> >>> > problem >> >>> > with thread interruptions in batchMutate >> >>> > [HBASE-8495] - Change ownership of the directory to bulk load >> >>> > [HBASE-10871] - Indefinite OPEN/CLOSE wait on busy RegionServers >> >>> > [HBASE-10935] - support snapshot policy where flush memstore can be >> >>> > skipped to prevent production cluster freeze >> >>> > >> >>> > The list of changes is also available here: >> >>> > >> >>> https://issues.apache.org/jira/secure/ReleaseNote.jspa?projectId=12310753&version=12326794 >> >>> > >> >>> > Here's the test run for this RC: >> >>> > https://builds.apache.org/job/HBase-0.94.21/30/ >> >>> > >> >>> > Please try out the RC, check out the doc, take it for a spin, etc, and >> >>> > vote +1/-1 by EOD July 3rd on whether we should release this as >> >>> > 0.94.21. >> >>> > >> >>> > Thanks. >> >>> > >> >>> > -- Lars >> >>> > >> >>> >> >>> >> >>> >> >>> -- >> >>> Best regards, >> >>> >> >>> - Andy >> >>> >> >>> Problems worthy of attack prove their worth by hitting back. - Piet Hein >> >>> (via Tom White) >> >>> >> > >
